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- # Source Generated with Decompyle++
- # File: in.pyc (Python 2.3)
-
- '''Extract, format and print information about Python stack traces.'''
- import linecache
- import sys
- import types
- __all__ = [
- 'extract_stack',
- 'extract_tb',
- 'format_exception',
- 'format_exception_only',
- 'format_list',
- 'format_stack',
- 'format_tb',
- 'print_exc',
- 'print_exception',
- 'print_last',
- 'print_stack',
- 'print_tb',
- 'tb_lineno']
-
- def _print(file, str = '', terminator = '\n'):
- file.write(str + terminator)
-
-
- def print_list(extracted_list, file = None):
- '''Print the list of tuples as returned by extract_tb() or
- extract_stack() as a formatted stack trace to the given file.'''
- if file is None:
- file = sys.stderr
-
- for filename, lineno, name, line in extracted_list:
- _print(file, ' File "%s", line %d, in %s' % (filename, lineno, name))
- if line:
- _print(file, ' %s' % line.strip())
- continue
-
-
-
- def format_list(extracted_list):
- '''Format a list of traceback entry tuples for printing.
-
- Given a list of tuples as returned by extract_tb() or
- extract_stack(), return a list of strings ready for printing.
- Each string in the resulting list corresponds to the item with the
- same index in the argument list. Each string ends in a newline;
- the strings may contain internal newlines as well, for those items
- whose source text line is not None.
- '''
- list = []
- for filename, lineno, name, line in extracted_list:
- item = ' File "%s", line %d, in %s\n' % (filename, lineno, name)
- if line:
- item = item + ' %s\n' % line.strip()
-
- list.append(item)
-
- return list
-
-
- def print_tb(tb, limit = None, file = None):
- """Print up to 'limit' stack trace entries from the traceback 'tb'.
-
- If 'limit' is omitted or None, all entries are printed. If 'file'
- is omitted or None, the output goes to sys.stderr; otherwise
- 'file' should be an open file or file-like object with a write()
- method.
- """
- if file is None:
- file = sys.stderr
-
- if limit is None:
- if hasattr(sys, 'tracebacklimit'):
- limit = sys.tracebacklimit
-
-
- n = 0
- while tb is not None and limit is None or n < limit:
- f = tb.tb_frame
- lineno = tb.tb_lineno
- co = f.f_code
- filename = co.co_filename
- name = co.co_name
- _print(file, ' File "%s", line %d, in %s' % (filename, lineno, name))
- line = linecache.getline(filename, lineno)
- if line:
- _print(file, ' ' + line.strip())
-
- tb = tb.tb_next
- n = n + 1
-
-
- def format_tb(tb, limit = None):
- """A shorthand for 'format_list(extract_stack(f, limit))."""
- return format_list(extract_tb(tb, limit))
-
-
- def extract_tb(tb, limit = None):
- """Return list of up to limit pre-processed entries from traceback.
-
- This is useful for alternate formatting of stack traces. If
- 'limit' is omitted or None, all entries are extracted. A
- pre-processed stack trace entry is a quadruple (filename, line
- number, function name, text) representing the information that is
- usually printed for a stack trace. The text is a string with
- leading and trailing whitespace stripped; if the source is not
- available it is None.
- """
- if limit is None:
- if hasattr(sys, 'tracebacklimit'):
- limit = sys.tracebacklimit
-
-
- list = []
- n = 0
- while tb is not None and limit is None or n < limit:
- f = tb.tb_frame
- lineno = tb.tb_lineno
- co = f.f_code
- filename = co.co_filename
- name = co.co_name
- line = linecache.getline(filename, lineno)
- if line:
- line = line.strip()
- else:
- line = None
- list.append((filename, lineno, name, line))
- tb = tb.tb_next
- n = n + 1
- return list
-
-
- def print_exception(etype, value, tb, limit = None, file = None):
- '''Print exception up to \'limit\' stack trace entries from \'tb\' to \'file\'.
-
- This differs from print_tb() in the following ways: (1) if
- traceback is not None, it prints a header "Traceback (most recent
- call last):"; (2) it prints the exception type and value after the
- stack trace; (3) if type is SyntaxError and value has the
- appropriate format, it prints the line where the syntax error
- occurred with a caret on the next line indicating the approximate
- position of the error.
- '''
- if file is None:
- file = sys.stderr
-
- if tb:
- _print(file, 'Traceback (most recent call last):')
- print_tb(tb, limit, file)
-
- lines = format_exception_only(etype, value)
- for line in lines[:-1]:
- _print(file, line, ' ')
-
- _print(file, lines[-1], '')
-
-
- def format_exception(etype, value, tb, limit = None):
- '''Format a stack trace and the exception information.
-
- The arguments have the same meaning as the corresponding arguments
- to print_exception(). The return value is a list of strings, each
- ending in a newline and some containing internal newlines. When
- these lines are concatenated and printed, exactly the same text is
- printed as does print_exception().
- '''
- if tb:
- list = [
- 'Traceback (most recent call last):\n']
- list = list + format_tb(tb, limit)
- else:
- list = []
- list = list + format_exception_only(etype, value)
- return list
-
-
- def format_exception_only(etype, value):
- '''Format the exception part of a traceback.
-
- The arguments are the exception type and value such as given by
- sys.last_type and sys.last_value. The return value is a list of
- strings, each ending in a newline. Normally, the list contains a
- single string; however, for SyntaxError exceptions, it contains
- several lines that (when printed) display detailed information
- about where the syntax error occurred. The message indicating
- which exception occurred is the always last string in the list.
- '''
- list = []
- if type(etype) == types.ClassType:
- stype = etype.__name__
- else:
- stype = etype
- if value is None:
- list.append(str(stype) + '\n')
- elif etype is SyntaxError:
-
- try:
- (filename, lineno, offset, line) = (msg,)
- except:
- pass
-
- if not filename:
- filename = '<string>'
-
- list.append(' File "%s", line %d\n' % (filename, lineno))
- if line is not None:
- i = 0
- while i < len(line) and line[i].isspace():
- i = i + 1
- list.append(' %s\n' % line.strip())
- if offset is not None:
- s = ' '
- for c in line[i:offset - 1]:
- if c.isspace():
- s = s + c
- continue
- s = s + ' '
-
- list.append('%s^\n' % s)
-
- value = msg
-
-
- s = _some_str(value)
- if s:
- list.append('%s: %s\n' % (str(stype), s))
- else:
- list.append('%s\n' % str(stype))
- return list
-
-
- def _some_str(value):
-
- try:
- return str(value)
- except:
- return '<unprintable %s object>' % type(value).__name__
-
-
-
- def print_exc(limit = None, file = None):
- """Shorthand for 'print_exception(sys.exc_type, sys.exc_value, sys.exc_traceback, limit, file)'.
- (In fact, it uses sys.exc_info() to retrieve the same information
- in a thread-safe way.)"""
- if file is None:
- file = sys.stderr
-
-
- try:
- (etype, value, tb) = sys.exc_info()
- print_exception(etype, value, tb, limit, file)
- finally:
- etype = value = tb = None
-
-
-
- def print_last(limit = None, file = None):
- """This is a shorthand for 'print_exception(sys.last_type,
- sys.last_value, sys.last_traceback, limit, file)'."""
- if file is None:
- file = sys.stderr
-
- print_exception(sys.last_type, sys.last_value, sys.last_traceback, limit, file)
-
-
- def print_stack(f = None, limit = None, file = None):
- """Print a stack trace from its invocation point.
-
- The optional 'f' argument can be used to specify an alternate
- stack frame at which to start. The optional 'limit' and 'file'
- arguments have the same meaning as for print_exception().
- """
- if f is None:
-
- try:
- raise ZeroDivisionError
- except ZeroDivisionError:
- f = sys.exc_info()[2].tb_frame.f_back
- except:
- None<EXCEPTION MATCH>ZeroDivisionError
-
-
- None<EXCEPTION MATCH>ZeroDivisionError
- print_list(extract_stack(f, limit), file)
-
-
- def format_stack(f = None, limit = None):
- """Shorthand for 'format_list(extract_stack(f, limit))'."""
- if f is None:
-
- try:
- raise ZeroDivisionError
- except ZeroDivisionError:
- f = sys.exc_info()[2].tb_frame.f_back
- except:
- None<EXCEPTION MATCH>ZeroDivisionError
-
-
- None<EXCEPTION MATCH>ZeroDivisionError
- return format_list(extract_stack(f, limit))
-
-
- def extract_stack(f = None, limit = None):
- """Extract the raw traceback from the current stack frame.
-
- The return value has the same format as for extract_tb(). The
- optional 'f' and 'limit' arguments have the same meaning as for
- print_stack(). Each item in the list is a quadruple (filename,
- line number, function name, text), and the entries are in order
- from oldest to newest stack frame.
- """
- if f is None:
-
- try:
- raise ZeroDivisionError
- except ZeroDivisionError:
- f = sys.exc_info()[2].tb_frame.f_back
- except:
- None<EXCEPTION MATCH>ZeroDivisionError
-
-
- None<EXCEPTION MATCH>ZeroDivisionError
- if limit is None:
- if hasattr(sys, 'tracebacklimit'):
- limit = sys.tracebacklimit
-
-
- list = []
- n = 0
- while f is not None and limit is None or n < limit:
- lineno = f.f_lineno
- co = f.f_code
- filename = co.co_filename
- name = co.co_name
- line = linecache.getline(filename, lineno)
- if line:
- line = line.strip()
- else:
- line = None
- list.append((filename, lineno, name, line))
- f = f.f_back
- n = n + 1
- list.reverse()
- return list
-
-
- def tb_lineno(tb):
- '''Calculate correct line number of traceback given in tb.
-
- Obsolete in 2.3.
- '''
- return tb.tb_lineno
-
-