PC World Komputer 2010 April/PCWorld0410.iso/hity wydania/Ubuntu 9.10 PL/karmelkowy-koliberek-desktop-9.10-i386-PL.iso/casper/filesystem.squashfs/usr/lib/python2.6/pdb.pyc

Python Compiled Bytecode | 2009-11-11 | 43KB | 1,322 lines

# Source Generated with Decompyle++
# File: in.pyc (Python 2.6)

'''A Python debugger.'''
import sys
import linecache
import cmd
import bdb
from repr import Repr
import os
import re
import pprint
import traceback

class Restart(Exception):
    '''Causes a debugger to be restarted for the debugged python program.'''
    pass

_repr = Repr()
_repr.maxstring = 200
_saferepr = _repr.repr
__all__ = [
    'run',
    'pm',
    'Pdb',
    'runeval',
    'runctx',
    'runcall',
    'set_trace',
    'post_mortem',
    'help']

def find_function(funcname, filename):
    cre = re.compile('def\\s+%s\\s*[(]' % re.escape(funcname))

    try:
        fp = open(filename)
    except IOError:
        return None

    lineno = 1
    answer = None
    while None:
        line = fp.readline()
        if line == '':
            break

        if cre.match(line):
            answer = (funcname, filename, lineno)
            break

        lineno = lineno + 1
        continue
        return answer

line_prefix = '\n-> '

class Pdb(bdb.Bdb, cmd.Cmd):

    def __init__(self, completekey = 'tab', stdin = None, stdout = None):
        bdb.Bdb.__init__(self)
        cmd.Cmd.__init__(self, completekey, stdin, stdout)
        if stdout:
            self.use_rawinput = 0

        self.prompt = '(Pdb) '
        self.aliases = { }
        self.mainpyfile = ''
        self._wait_for_mainpyfile = 0

        try:
            import readline
        except ImportError:
            pass

        self.rcLines = []
        if 'HOME' in os.environ:
            envHome = os.environ['HOME']

            try:
                rcFile = open(os.path.join(envHome, '.pdbrc'))
            except IOError:
                pass

            for line in rcFile.readlines():
                self.rcLines.append(line)

            rcFile.close()


        try:
            rcFile = open('.pdbrc')
        except IOError:
            pass

        for line in rcFile.readlines():
            self.rcLines.append(line)

        rcFile.close()
        self.commands = { }
        self.commands_doprompt = { }
        self.commands_silent = { }
        self.commands_defining = False
        self.commands_bnum = None


    def reset(self):
        bdb.Bdb.reset(self)
        self.forget()


    def forget(self):
        self.lineno = None
        self.stack = []
        self.curindex = 0
        self.curframe = None


    def setup(self, f, t):
        self.forget()
        (self.stack, self.curindex) = self.get_stack(f, t)
        self.curframe = self.stack[self.curindex][0]
        self.execRcLines()


    def execRcLines(self):
        if self.rcLines:
            rcLines = self.rcLines
            self.rcLines = []
            for line in rcLines:
                line = line[:-1]
                if len(line) > 0 and line[0] != '#':
                    self.onecmd(line)
                    continue




    def user_call(self, frame, argument_list):
        '''This method is called when there is the remote possibility
        that we ever need to stop in this function.'''
        if self._wait_for_mainpyfile:
            return None


    def user_line(self, frame):
        '''This function is called when we stop or break at this line.'''
        if self._wait_for_mainpyfile:
            if self.mainpyfile != self.canonic(frame.f_code.co_filename) or frame.f_lineno <= 0:
                return None
            self._wait_for_mainpyfile = 0

        if self.bp_commands(frame):
            self.interaction(frame, None)



    def bp_commands(self, frame):
        ''' Call every command that was set for the current active breakpoint (if there is one)
        Returns True if the normal interaction function must be called, False otherwise '''
        if getattr(self, 'currentbp', False) and self.currentbp in self.commands:
            currentbp = self.currentbp
            self.currentbp = 0
            lastcmd_back = self.lastcmd
            self.setup(frame, None)
            for line in self.commands[currentbp]:
                self.onecmd(line)

            self.lastcmd = lastcmd_back
            if not self.commands_silent[currentbp]:
                self.print_stack_entry(self.stack[self.curindex])

            if self.commands_doprompt[currentbp]:
                self.cmdloop()

            self.forget()
            return None
        return 1


    def user_return(self, frame, return_value):
        '''This function is called when a return trap is set here.'''
        frame.f_locals['__return__'] = return_value
        print >>self.stdout, '--Return--'
        self.interaction(frame, None)


    def user_exception(self, frame, exc_info):
        (exc_type, exc_value, exc_traceback) = exc_info
        frame.f_locals['__exception__'] = (exc_type, exc_value)
        if type(exc_type) == type(''):
            exc_type_name = exc_type
        else:
            exc_type_name = exc_type.__name__
        print >>self.stdout, exc_type_name + ':', _saferepr(exc_value)
        self.interaction(frame, exc_traceback)


    def interaction(self, frame, traceback):
        self.setup(frame, traceback)
        self.print_stack_entry(self.stack[self.curindex])
        self.cmdloop()
        self.forget()


    def displayhook(self, obj):
        '''Custom displayhook for the exec in default(), which prevents
        assignment of the _ variable in the builtins.
        '''
        print repr(obj)


    def default(self, line):
        if line[:1] == '!':
            line = line[1:]

        locals = self.curframe.f_locals
        globals = self.curframe.f_globals

        try:
            code = compile(line + '\n', '<stdin>', 'single')
            save_stdout = sys.stdout
            save_stdin = sys.stdin
            save_displayhook = sys.displayhook

            try:
                sys.stdin = self.stdin
                sys.stdout = self.stdout
                sys.displayhook = self.displayhook
                exec code in globals, locals
            finally:
                sys.stdout = save_stdout
                sys.stdin = save_stdin
                sys.displayhook = save_displayhook

        except:
            (t, v) = sys.exc_info()[:2]
            if type(t) == type(''):
                exc_type_name = t
            else:
                exc_type_name = t.__name__
            print >>self.stdout, '***', exc_type_name + ':', v



    def precmd(self, line):
        """Handle alias expansion and ';;' separator."""
        if not line.strip():
            return line
        args = line.split()
        while args[0] in self.aliases:
            line = self.aliases[args[0]]
            ii = 1
            for tmpArg in args[1:]:
                line = line.replace('%' + str(ii), tmpArg)
                ii = ii + 1

            line = line.replace('%*', ' '.join(args[1:]))
            args = line.split()
            continue
            line.strip()
        if args[0] != 'alias':
            marker = line.find(';;')
            if marker >= 0:
                next = line[marker + 2:].lstrip()
                self.cmdqueue.append(next)
                line = line[:marker].rstrip()


        return line


    def onecmd(self, line):
        '''Interpret the argument as though it had been typed in response
        to the prompt.

        Checks whether this line is typed at the normal prompt or in
        a breakpoint command list definition.
        '''
        if not self.commands_defining:
            return cmd.Cmd.onecmd(self, line)
        return self.handle_command_def(line)


    def handle_command_def(self, line):
        ''' Handles one command line during command list definition. '''
        (cmd, arg, line) = self.parseline(line)
        if cmd == 'silent':
            self.commands_silent[self.commands_bnum] = True
            return None
        if cmd == 'end':
            self.cmdqueue = []
            return 1
        cmdlist = self.commands[self.commands_bnum]

        try:
            func = getattr(self, 'do_' + cmd)
        except AttributeError:
            None if arg else cmd == 'silent'
            None if arg else cmd == 'silent'
            func = self.default
        except:
            None if arg else cmd == 'silent'

        if func.func_name in self.commands_resuming:
            self.commands_doprompt[self.commands_bnum] = False
            self.cmdqueue = []
            return 1

    do_h = cmd.Cmd.do_help

    def do_commands(self, arg):
        '''Defines a list of commands associated to a breakpoint
        Those commands will be executed whenever the breakpoint causes the program to stop execution.'''
        if not arg:
            bnum = len(bdb.Breakpoint.bpbynumber) - 1
        else:

            try:
                bnum = int(arg)
            except:
                print >>self.stdout, 'Usage : commands [bnum]\n        ...\n        end'
                return None

        self.commands_bnum = bnum
        self.commands[bnum] = []
        self.commands_doprompt[bnum] = True
        self.commands_silent[bnum] = False
        prompt_back = self.prompt
        self.prompt = '(com) '
        self.commands_defining = True
        self.cmdloop()
        self.commands_defining = False
        self.prompt = prompt_back


    def do_break(self, arg, temporary = 0):
        if not arg:
            if self.breaks:
                print >>self.stdout, 'Num Type         Disp Enb   Where'
                for bp in bdb.Breakpoint.bpbynumber:
                    if bp:
                        bp.bpprint(self.stdout)
                        continue


            return None
        filename = None
        lineno = None
        cond = None
        comma = arg.find(',')
        if comma > 0:
            cond = arg[comma + 1:].lstrip()
            arg = arg[:comma].rstrip()

        colon = arg.rfind(':')
        funcname = None
        if colon >= 0:
            filename = arg[:colon].rstrip()
            f = self.lookupmodule(filename)
            if not f:
                print >>self.stdout, '*** ', repr(filename),
                print >>self.stdout, 'not found from sys.path'
                return None
            filename = f
            arg = arg[colon + 1:].lstrip()

            try:
                lineno = int(arg)
            except ValueError:
                f
                msg = f
                print >>self.stdout, '*** Bad lineno:', arg
                return None


        f<EXCEPTION MATCH>ValueError

        try:
            lineno = int(arg)
        except ValueError:
            f
            f
            f

            try:
                func = eval(arg, self.curframe.f_globals, self.curframe.f_locals)
            except:
                func = arg


            try:
                if hasattr(func, 'im_func'):
                    func = func.im_func

                code = func.func_code
                funcname = code.co_name
                lineno = code.co_firstlineno
                filename = code.co_filename
            (ok, filename, ln) = self.lineinfo(arg)
            if not ok:
                print >>self.stdout, '*** The specified object',
                print >>self.stdout, repr(arg),
                print >>self.stdout, 'is not a function'
                print >>self.stdout, 'or was not found along sys.path.'
                return None
            funcname = ok
            lineno = int(ln)

        except:
            ok

        if not filename:
            filename = self.defaultFile()

        line = self.checkline(filename, lineno)
        if line:
            err = self.set_break(filename, line, temporary, cond, funcname)
            if err:
                print >>self.stdout, '***', err
            else:
                bp = self.get_breaks(filename, line)[-1]
                print >>self.stdout, 'Breakpoint %d at %s:%d' % (bp.number, bp.file, bp.line)



    def defaultFile(self):
        '''Produce a reasonable default.'''
        filename = self.curframe.f_code.co_filename
        if filename == '<string>' and self.mainpyfile:
            filename = self.mainpyfile

        return filename

    do_b = do_break

    def do_tbreak(self, arg):
        self.do_break(arg, 1)


    def lineinfo(self, identifier):
        failed = (None, None, None)
        idstring = identifier.split("'")
        if len(idstring) == 1:
            id = idstring[0].strip()
        elif len(idstring) == 3:
            id = idstring[1].strip()
        else:
            return failed
        if len(idstring) == 1 == '':
            return failed
        parts = id.split('.')
        fname = self.defaultFile()
        if len(parts) == 1:
            item = parts[0]
        else:
            f = self.lookupmodule(parts[0])
            if f:
                fname = f

            item = parts[1]
        answer = find_function(item, fname)
        if not answer:
            pass
        return failed


    def checkline(self, filename, lineno):
        '''Check whether specified line seems to be executable.

        Return `lineno` if it is, 0 if not (e.g. a docstring, comment, blank
        line or EOF). Warning: testing is not comprehensive.
        '''
        line = linecache.getline(filename, lineno, self.curframe.f_globals)
        if not line:
            print >>self.stdout, 'End of file'
            return 0
        line = line.strip()
        if not line and line[0] == '#' and line[:3] == '"""' or line[:3] == "'''":
            print >>self.stdout, '*** Blank or comment'
            return 0
        return lineno


    def do_enable(self, arg):
        args = arg.split()
        for i in args:

            try:
                i = int(i)
            except ValueError:
                print >>self.stdout, 'Breakpoint index %r is not a number' % i
                continue

            if i <= i:
                pass
            elif not i < len(bdb.Breakpoint.bpbynumber):
                print >>self.stdout, 'No breakpoint numbered', i
                continue

            bp = bdb.Breakpoint.bpbynumber[i]
            if bp:
                bp.enable()
                continue
            0



    def do_disable(self, arg):
        args = arg.split()
        for i in args:

            try:
                i = int(i)
            except ValueError:
                print >>self.stdout, 'Breakpoint index %r is not a number' % i
                continue

            if i <= i:
                pass
            elif not i < len(bdb.Breakpoint.bpbynumber):
                print >>self.stdout, 'No breakpoint numbered', i
                continue

            bp = bdb.Breakpoint.bpbynumber[i]
            if bp:
                bp.disable()
                continue
            0



    def do_condition(self, arg):
        args = arg.split(' ', 1)

        try:
            bpnum = int(args[0].strip())
        except ValueError:
            print >>self.stdout, 'Breakpoint index %r is not a number' % args[0]
            return None


        try:
            cond = args[1]
        except:
            cond = None


        try:
            bp = bdb.Breakpoint.bpbynumber[bpnum]
        except IndexError:
            print >>self.stdout, 'Breakpoint index %r is not valid' % args[0]
            return None

        if bp:
            bp.cond = cond
            if not cond:
                print >>self.stdout, 'Breakpoint', bpnum,
                print >>self.stdout, 'is now unconditional.'




    def do_ignore(self, arg):
        '''arg is bp number followed by ignore count.'''
        args = arg.split()

        try:
            bpnum = int(args[0].strip())
        except ValueError:
            print >>self.stdout, 'Breakpoint index %r is not a number' % args[0]
            return None


        try:
            count = int(args[1].strip())
        except:
            count = 0


        try:
            bp = bdb.Breakpoint.bpbynumber[bpnum]
        except IndexError:
            print >>self.stdout, 'Breakpoint index %r is not valid' % args[0]
            return None

        if bp:
            bp.ignore = count
            if count > 0:
                reply = 'Will ignore next '
                if count > 1:
                    reply = reply + '%d crossings' % count
                else:
                    reply = reply + '1 crossing'
                print >>self.stdout, reply + ' of breakpoint %d.' % bpnum
            else:
                print >>self.stdout, 'Will stop next time breakpoint',
                print >>self.stdout, bpnum, 'is reached.'



    def do_clear(self, arg):
        '''Three possibilities, tried in this order:
        clear -> clear all breaks, ask for confirmation
        clear file:lineno -> clear all breaks at file:lineno
        clear bpno bpno ... -> clear breakpoints by number'''
        if not arg:

            try:
                reply = raw_input('Clear all breaks? ')
            except EOFError:
                reply = 'no'

            reply = reply.strip().lower()
            if reply in ('y', 'yes'):
                self.clear_all_breaks()

            return None
        if ':' in arg:
            i = arg.rfind(':')
            filename = arg[:i]
            arg = arg[i + 1:]

            try:
                lineno = int(arg)
            except ValueError:
                arg
                arg
                err = 'Invalid line number (%s)' % arg
            except:
                arg

            err = self.clear_break(filename, lineno)
            return None
        numberlist = arg.split()
        for i in numberlist:

            try:
                i = int(i)
            except ValueError:
                ':' in arg
                ':' in arg
                arg
                print >>self.stdout, 'Breakpoint index %r is not a number' % i
                continue
            except:
                ':' in arg

            if i <= i:
                pass
            elif not i < len(bdb.Breakpoint.bpbynumber):
                print >>self.stdout, 'No breakpoint numbered', i
                continue

            err = self.clear_bpbynumber(i)
            if err:
                print >>self.stdout, '***', err
                continue
            print >>self.stdout, 'Deleted breakpoint', i


    do_cl = do_clear

    def do_where(self, arg):
        self.print_stack_trace()

    do_w = do_where
    do_bt = do_where

    def do_up(self, arg):
        if self.curindex == 0:
            print >>self.stdout, '*** Oldest frame'
        else:
            self.curindex = self.curindex - 1
            self.curframe = self.stack[self.curindex][0]
            self.print_stack_entry(self.stack[self.curindex])
            self.lineno = None

    do_u = do_up

    def do_down(self, arg):
        if self.curindex + 1 == len(self.stack):
            print >>self.stdout, '*** Newest frame'
        else:
            self.curindex = self.curindex + 1
            self.curframe = self.stack[self.curindex][0]
            self.print_stack_entry(self.stack[self.curindex])
            self.lineno = None

    do_d = do_down

    def do_until(self, arg):
        self.set_until(self.curframe)
        return 1

    do_unt = do_until

    def do_step(self, arg):
        self.set_step()
        return 1

    do_s = do_step

    def do_next(self, arg):
        self.set_next(self.curframe)
        return 1

    do_n = do_next

    def do_run(self, arg):
        '''Restart program by raising an exception to be caught in the main debugger
        loop. If arguments were given, set them in sys.argv.'''
        if arg:
            import shlex as shlex
            argv0 = sys.argv[0:1]
            sys.argv = shlex.split(arg)
            sys.argv[:0] = argv0

        raise Restart

    do_restart = do_run

    def do_return(self, arg):
        self.set_return(self.curframe)
        return 1

    do_r = do_return

    def do_continue(self, arg):
        self.set_continue()
        return 1

    do_c = do_cont = do_continue

    def do_jump(self, arg):
        if self.curindex + 1 != len(self.stack):
            print >>self.stdout, '*** You can only jump within the bottom frame'
            return None

        try:
            arg = int(arg)
        except ValueError:
            self.curindex + 1 != len(self.stack)
            self.curindex + 1 != len(self.stack)
            print >>self.stdout, "*** The 'jump' command requires a line number."
        except:
            self.curindex + 1 != len(self.stack)


        try:
            self.curframe.f_lineno = arg
            self.stack[self.curindex] = (self.stack[self.curindex][0], arg)
            self.print_stack_entry(self.stack[self.curindex])
        except ValueError:
            self.curindex + 1 != len(self.stack)
            e = self.curindex + 1 != len(self.stack)
            print >>self.stdout, '*** Jump failed:', e
        except:
            self.curindex + 1 != len(self.stack)


    do_j = do_jump

    def do_debug(self, arg):
        sys.settrace(None)
        globals = self.curframe.f_globals
        locals = self.curframe.f_locals
        p = Pdb(self.completekey, self.stdin, self.stdout)
        p.prompt = '(%s) ' % self.prompt.strip()
        print >>self.stdout, 'ENTERING RECURSIVE DEBUGGER'
        sys.call_tracing(p.run, (arg, globals, locals))
        print >>self.stdout, 'LEAVING RECURSIVE DEBUGGER'
        sys.settrace(self.trace_dispatch)
        self.lastcmd = p.lastcmd


    def do_quit(self, arg):
        self._user_requested_quit = 1
        self.set_quit()
        return 1

    do_q = do_quit
    do_exit = do_quit

    def do_EOF(self, arg):
        print >>self.stdout
        self._user_requested_quit = 1
        self.set_quit()
        return 1


    def do_args(self, arg):
        f = self.curframe
        co = f.f_code
        dict = f.f_locals
        n = co.co_argcount
        if co.co_flags & 4:
            n = n + 1

        if co.co_flags & 8:
            n = n + 1

        for i in range(n):
            name = co.co_varnames[i]
            print >>self.stdout, name, '=',
            if name in dict:
                print >>self.stdout, dict[name]
                continue
            print >>self.stdout, '*** undefined ***'


    do_a = do_args

    def do_retval(self, arg):
        if '__return__' in self.curframe.f_locals:
            print >>self.stdout, self.curframe.f_locals['__return__']
        else:
            print >>self.stdout, '*** Not yet returned!'

    do_rv = do_retval

    def _getval(self, arg):

        try:
            return eval(arg, self.curframe.f_globals, self.curframe.f_locals)
        except:
            (t, v) = sys.exc_info()[:2]
            if isinstance(t, str):
                exc_type_name = t
            else:
                exc_type_name = t.__name__
            print >>self.stdout, '***', exc_type_name + ':', repr(v)
            raise



    def do_p(self, arg):

        try:
            print >>self.stdout, repr(self._getval(arg))
        except:
            pass



    def do_pp(self, arg):

        try:
            pprint.pprint(self._getval(arg), self.stdout)
        except:
            pass



    def do_list(self, arg):
        self.lastcmd = 'list'
        last = None
        if arg:

            try:
                x = eval(arg, { }, { })
                if type(x) == type(()):
                    (first, last) = x
                    first = int(first)
                    last = int(last)
                    if last < first:
                        last = first + last

                else:
                    first = max(1, int(x) - 5)
            print >>self.stdout, '*** Error in argument:', repr(arg)
            return None

        elif self.lineno is None:
            first = max(1, self.curframe.f_lineno - 5)
        else:
            first = self.lineno + 1
        if last is None:
            last = first + 10

        filename = self.curframe.f_code.co_filename
        breaklist = self.get_file_breaks(filename)

        try:
            for lineno in range(first, last + 1):
                line = linecache.getline(filename, lineno, self.curframe.f_globals)
                if not line:
                    print >>self.stdout, '[EOF]'
                    break
                    continue
                s = repr(lineno).rjust(3)
                if len(s) < 4:
                    s = s + ' '

                if lineno in breaklist:
                    s = s + 'B'
                else:
                    s = s + ' '
                if lineno == self.curframe.f_lineno:
                    s = s + '->'

                print >>self.stdout, s + '\t' + line,
                self.lineno = lineno
        except KeyboardInterrupt:
            pass


    do_l = do_list

    def do_whatis(self, arg):

        try:
            value = eval(arg, self.curframe.f_globals, self.curframe.f_locals)
        except:
            (t, v) = sys.exc_info()[:2]
            if type(t) == type(''):
                exc_type_name = t
            else:
                exc_type_name = t.__name__
            print >>self.stdout, '***', exc_type_name + ':', repr(v)
            return None

        code = None

        try:
            code = value.func_code
        except:
            pass

        if code:
            print >>self.stdout, 'Function', code.co_name
            return None

        try:
            code = value.im_func.func_code
        except:
            code

        if code:
            print >>self.stdout, 'Method', code.co_name
            return None
        print >>self.stdout, type(value)


    def do_alias(self, arg):
        args = arg.split()
        if len(args) == 0:
            keys = self.aliases.keys()
            keys.sort()
            for alias in keys:
                print >>self.stdout, '%s = %s' % (alias, self.aliases[alias])

            return None


    def do_unalias(self, arg):
        args = arg.split()
        if len(args) == 0:
            return None
        if args[0] in self.aliases:
            del self.aliases[args[0]]


    commands_resuming = [
        'do_continue',
        'do_step',
        'do_next',
        'do_return',
        'do_quit',
        'do_jump']

    def print_stack_trace(self):

        try:
            for frame_lineno in self.stack:
                self.print_stack_entry(frame_lineno)
        except KeyboardInterrupt:
            pass



    def print_stack_entry(self, frame_lineno, prompt_prefix = line_prefix):
        (frame, lineno) = frame_lineno
        if frame is self.curframe:
            print >>self.stdout, '>',
        else:
            print >>self.stdout, ' ',
        print >>self.stdout, self.format_stack_entry(frame_lineno, prompt_prefix)


    def help_help(self):
        self.help_h()


    def help_h(self):
        print >>self.stdout, 'h(elp)\nWithout argument, print the list of available commands.\nWith a command name as argument, print help about that command\n"help pdb" pipes the full documentation file to the $PAGER\n"help exec" gives help on the ! command'


    def help_where(self):
        self.help_w()


    def help_w(self):
        print >>self.stdout, 'w(here)\nPrint a stack trace, with the most recent frame at the bottom.\nAn arrow indicates the "current frame", which determines the\ncontext of most commands.  \'bt\' is an alias for this command.'

    help_bt = help_w

    def help_down(self):
        self.help_d()


    def help_d(self):
        print >>self.stdout, 'd(own)\nMove the current frame one level down in the stack trace\n(to a newer frame).'


    def help_up(self):
        self.help_u()


    def help_u(self):
        print >>self.stdout, 'u(p)\nMove the current frame one level up in the stack trace\n(to an older frame).'


    def help_break(self):
        self.help_b()


    def help_b(self):
        print >>self.stdout, "b(reak) ([file:]lineno | function) [, condition]\nWith a line number argument, set a break there in the current\nfile.  With a function name, set a break at first executable line\nof that function.  Without argument, list all breaks.  If a second\nargument is present, it is a string specifying an expression\nwhich must evaluate to true before the breakpoint is honored.\n\nThe line number may be prefixed with a filename and a colon,\nto specify a breakpoint in another file (probably one that\nhasn't been loaded yet).  The file is searched for on sys.path;\nthe .py suffix may be omitted."


    def help_clear(self):
        self.help_cl()


    def help_cl(self):
        print >>self.stdout, 'cl(ear) filename:lineno'
        print >>self.stdout, 'cl(ear) [bpnumber [bpnumber...]]\nWith a space separated list of breakpoint numbers, clear\nthose breakpoints.  Without argument, clear all breaks (but\nfirst ask confirmation).  With a filename:lineno argument,\nclear all breaks at that line in that file.\n\nNote that the argument is different from previous versions of\nthe debugger (in python distributions 1.5.1 and before) where\na linenumber was used instead of either filename:lineno or\nbreakpoint numbers.'


    def help_tbreak(self):
        print >>self.stdout, 'tbreak  same arguments as break, but breakpoint is\nremoved when first hit.'


    def help_enable(self):
        print >>self.stdout, 'enable bpnumber [bpnumber ...]\nEnables the breakpoints given as a space separated list of\nbp numbers.'


    def help_disable(self):
        print >>self.stdout, 'disable bpnumber [bpnumber ...]\nDisables the breakpoints given as a space separated list of\nbp numbers.'


    def help_ignore(self):
        print >>self.stdout, 'ignore bpnumber count\nSets the ignore count for the given breakpoint number.  A breakpoint\nbecomes active when the ignore count is zero.  When non-zero, the\ncount is decremented each time the breakpoint is reached and the\nbreakpoint is not disabled and any associated condition evaluates\nto true.'


    def help_condition(self):
        print >>self.stdout, 'condition bpnumber str_condition\nstr_condition is a string specifying an expression which\nmust evaluate to true before the breakpoint is honored.\nIf str_condition is absent, any existing condition is removed;\ni.e., the breakpoint is made unconditional.'


    def help_step(self):
        self.help_s()


    def help_s(self):
        print >>self.stdout, 's(tep)\nExecute the current line, stop at the first possible occasion\n(either in a function that is called or in the current function).'


    def help_until(self):
        self.help_unt()


    def help_unt(self):
        print 'unt(il)\nContinue execution until the line with a number greater than the current\none is reached or until the current frame returns'


    def help_next(self):
        self.help_n()


    def help_n(self):
        print >>self.stdout, 'n(ext)\nContinue execution until the next line in the current function\nis reached or it returns.'


    def help_return(self):
        self.help_r()


    def help_r(self):
        print >>self.stdout, 'r(eturn)\nContinue execution until the current function returns.'


    def help_continue(self):
        self.help_c()


    def help_cont(self):
        self.help_c()


    def help_c(self):
        print >>self.stdout, 'c(ont(inue))\nContinue execution, only stop when a breakpoint is encountered.'


    def help_jump(self):
        self.help_j()


    def help_j(self):
        print >>self.stdout, 'j(ump) lineno\nSet the next line that will be executed.'


    def help_debug(self):
        print >>self.stdout, 'debug code\nEnter a recursive debugger that steps through the code argument\n(which is an arbitrary expression or statement to be executed\nin the current environment).'


    def help_list(self):
        self.help_l()


    def help_l(self):
        print >>self.stdout, 'l(ist) [first [,last]]\nList source code for the current file.\nWithout arguments, list 11 lines around the current line\nor continue the previous listing.\nWith one argument, list 11 lines starting at that line.\nWith two arguments, list the given range;\nif the second argument is less than the first, it is a count.'


    def help_args(self):
        self.help_a()


    def help_a(self):
        print >>self.stdout, 'a(rgs)\nPrint the arguments of the current function.'


    def help_p(self):
        print >>self.stdout, 'p expression\nPrint the value of the expression.'


    def help_pp(self):
        print >>self.stdout, 'pp expression\nPretty-print the value of the expression.'


    def help_exec(self):
        print >>self.stdout, "(!) statement\nExecute the (one-line) statement in the context of\nthe current stack frame.\nThe exclamation point can be omitted unless the first word\nof the statement resembles a debugger command.\nTo assign to a global variable you must always prefix the\ncommand with a 'global' command, e.g.:\n(Pdb) global list_options; list_options = ['-l']\n(Pdb)"


    def help_run(self):
        print 'run [args...]\nRestart the debugged python program. If a string is supplied, it is\nsplitted with "shlex" and the result is used as the new sys.argv.\nHistory, breakpoints, actions and debugger options are preserved.\n"restart" is an alias for "run".'

    help_restart = help_run

    def help_quit(self):
        self.help_q()


    def help_q(self):
        print >>self.stdout, 'q(uit) or exit - Quit from the debugger.\nThe program being executed is aborted.'

    help_exit = help_q

    def help_whatis(self):
        print >>self.stdout, 'whatis arg\nPrints the type of the argument.'


    def help_EOF(self):
        print >>self.stdout, 'EOF\nHandles the receipt of EOF as a command.'


    def help_alias(self):
        print >>self.stdout, 'alias [name [command [parameter parameter ...] ]]\nCreates an alias called \'name\' the executes \'command\'.  The command\nmust *not* be enclosed in quotes.  Replaceable parameters are\nindicated by %1, %2, and so on, while %* is replaced by all the\nparameters.  If no command is given, the current alias for name\nis shown. If no name is given, all aliases are listed.\n\nAliases may be nested and can contain anything that can be\nlegally typed at the pdb prompt.  Note!  You *can* override\ninternal pdb commands with aliases!  Those internal commands\nare then hidden until the alias is removed.  Aliasing is recursively\napplied to the first word of the command line; all other words\nin the line are left alone.\n\nSome useful aliases (especially when placed in the .pdbrc file) are:\n\n#Print instance variables (usage "pi classInst")\nalias pi for k in %1.__dict__.keys(): print "%1.",k,"=",%1.__dict__[k]\n\n#Print instance variables in self\nalias ps pi self\n'


    def help_unalias(self):
        print >>self.stdout, 'unalias name\nDeletes the specified alias.'


    def help_commands(self):
        print >>self.stdout, "commands [bpnumber]\n(com) ...\n(com) end\n(Pdb)\n\nSpecify a list of commands for breakpoint number bpnumber.  The\ncommands themselves appear on the following lines.  Type a line\ncontaining just 'end' to terminate the commands.\n\nTo remove all commands from a breakpoint, type commands and\nfollow it immediately with  end; that is, give no commands.\n\nWith no bpnumber argument, commands refers to the last\nbreakpoint set.\n\nYou can use breakpoint commands to start your program up again.\nSimply use the continue command, or step, or any other\ncommand that resumes execution.\n\nSpecifying any command resuming execution (currently continue,\nstep, next, return, jump, quit and their abbreviations) terminates\nthe command list (as if that command was immediately followed by end).\nThis is because any time you resume execution\n(even with a simple next or step), you may encounter\nanother breakpoint--which could have its own command list, leading to\nambiguities about which list to execute.\n\n   If you use the 'silent' command in the command list, the\nusual message about stopping at a breakpoint is not printed.  This may\nbe desirable for breakpoints that are to print a specific message and\nthen continue.  If none of the other commands print anything, you\nsee no sign that the breakpoint was reached.\n"


    def help_pdb(self):
        help()


    def lookupmodule(self, filename):
        '''Helper function for break/clear parsing -- may be overridden.

        lookupmodule() translates (possibly incomplete) file or module name
        into an absolute file name.
        '''
        if os.path.isabs(filename) and os.path.exists(filename):
            return filename
        f = os.path.join(sys.path[0], filename)
        if os.path.exists(f) and self.canonic(f) == self.mainpyfile:
            return f
        (root, ext) = os.path.splitext(filename)
        if os.path.isabs(filename):
            return filename
        for dirname in sys.path:
            while os.path.islink(dirname):
                dirname = os.readlink(dirname)
                continue
                os.path.isabs(filename)
            fullname = os.path.join(dirname, filename)
            if os.path.exists(fullname):
                return fullname



    def _runscript(self, filename):
        import __main__
        __main__.__dict__.clear()
        __main__.__dict__.update({
            '__name__': '__main__',
            '__file__': filename,
            '__builtins__': __builtins__ })
        self._wait_for_mainpyfile = 1
        self.mainpyfile = self.canonic(filename)
        self._user_requested_quit = 0
        statement = 'execfile( "%s")' % filename
        self.run(statement)



def run(statement, globals = None, locals = None):
    Pdb().run(statement, globals, locals)


def runeval(expression, globals = None, locals = None):
    return Pdb().runeval(expression, globals, locals)


def runctx(statement, globals, locals):
    run(statement, globals, locals)


def runcall(*args, **kwds):
    return Pdb().runcall(*args, **kwds)


def set_trace():
    Pdb().set_trace(sys._getframe().f_back)


def post_mortem(t = None):
    if t is None:
        t = sys.exc_info()[2]
        if t is None:
            raise ValueError('A valid traceback must be passed if no exception is being handled')
        t is None

    p = Pdb()
    p.reset()
    p.interaction(None, t)


def pm():
    post_mortem(sys.last_traceback)

TESTCMD = 'import x; x.main()'

def test():
    run(TESTCMD)


def help():
    for dirname in sys.path:
        fullname = os.path.join(dirname, 'pdb.doc')
        if os.path.exists(fullname):
            sts = os.system('${PAGER-more} ' + fullname)
            if sts:
                print '*** Pager exit status:', sts

            break
            continue
    else:
        print 'Sorry, can\'t find the help file "pdb.doc"', 'along the Python search path'


def main():
    if not sys.argv[1:] or sys.argv[1] in ('--help', '-h'):
        print 'usage: pdb.py scriptfile [arg] ...'
        sys.exit(2)

    mainpyfile = sys.argv[1]
    if not os.path.exists(mainpyfile):
        print 'Error:', mainpyfile, 'does not exist'
        sys.exit(1)

    del sys.argv[0]
    sys.path[0] = os.path.dirname(mainpyfile)
    pdb = Pdb()
    while None:

        try:
            pdb._runscript(mainpyfile)
            if pdb._user_requested_quit:
                break

            print 'The program finished and will be restarted'
        continue
        except Restart:
            print 'Restarting', mainpyfile, 'with arguments:'
            print '\t' + ' '.join(sys.argv[1:])
            continue
            except SystemExit:
                print 'The program exited via sys.exit(). Exit status: ', sys.exc_info()[1]
                continue
                traceback.print_exc()
                print 'Uncaught exception. Entering post mortem debugging'
                print "Running 'cont' or 'step' will restart the program"
                t = sys.exc_info()[2]
                pdb.interaction(None, t)
                print 'Post mortem debugger finished. The ' + mainpyfile + ' will be restarted'
                continue

            return None


if __name__ == '__main__':
    import pdb
    pdb.main()