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-
- GENERAL NOTES ON THE AMIGA VERSION OF PYTHON 1.4
-
- Irmen de Jong - ijong@gak.nl
- 27 dec. 1996
-
-
- MODULE SEARCH PATH
- ------------------
-
- Version 1.4 introduced a different treatment of the module search path.
- The current directory is no longer by default part of the module search
- path. Instead, the following procedure gives the module search path
- (sys.path):
-
- - sys.path is set to the default PYTHONPATH, which is "Python:lib"
- - if the global environment variable PYTHONPATH is set, the paths listed
- there will be inserted before the default path. PYTHONPATH is a semicolon
- (;) separated list of directories, like "WORK:pylib;Python:lib/mymods".
- - the path of the script which was given as an argument is inserted in front
- of the search path. If no script was given as argument, '' will be inserted
- (which is the current directory).
-
-
- AMIGA SPECIFIC MODULES
- ----------------------
-
- Version 1.4 introduced a clean way of installing platform specific library
- files. In the Lib drawer there is anoter drawer called site-python. All
- Amiga specific modules are put here. There is a simple way of using them:
- place the
-
- import site
-
- statement somewhere at the top of all code that must use site-specific
- modules. This will modify the module search path and also run any site
- specific initialization code (by importing the sitecustomize module, which
- should also be placed in the site-python drawer). Currently there is no
- sitecustomize module on the Amiga. If you don't like to import the site
- module (why?) just use sys.path.append('Python:Lib/site-python').
-
- You can now simply import any Amiga specific modules, regardless of them
- being built-in (like arexxll) or in a .py source file:
-
- import ARexx
-
-
-
- POSIX REPLACEMENTS
- ------------------
-
- In lib/ there are dummy modules `posixpath' and `posix'. They just import
- `amigapath' and `amiga', thereby making some other modules and files work
- because they don't use os.path and os.
-
-
- About the networking support (AmiTCP)
- -------------------------------------
-
- The python binary is compiled with AmiTCP support. The interpreter still
- works even if you don't have AmiTCP, but the extra functionality (mainly
- the socket module) can't be used without AmiTCP (obviously). Some extra
- functions already work if you only have the usergroup.library, and not the
- full AmiTCP package: the crypt, pwd and grp modules for instance. A
- MultiuserFileSystem-compatible usergroup.library can be found on Aminet (I
- didn't try it -- beware). Usergroup.library can also be found in the demo
- version of AmiTCP, which is also on Aminet.
-
-
- About Timezones
- ---------------
-
- As another side-effect of linking in AmiTCP stuff, Python extracts the
- timezone information from your current locale preferences. No need anymore
- for a TZ environment var. (One small problem: the name of the timezone is
- no longer known, and is replaced by '???'.) If the locale prefs couldn't be
- read, the timezone information is taken from ENV:TZ, which must be a string
- like 'MET-1' (MET, -1 hour from GMT).
-
-
- sys.platform
- ------------
-
- This is defined as 'amiga'. No upper case A.
-
-
- About modifying library files
- -----------------------------
-
- You should not change anything in one of the library files. The library
- files should always behave the same on all platforms that supports them.
- (Note: I said BEHAVE. You are free to modify the implementation but the
- BEHAVIOR should remain the same.)
-
-
- Workbench startup
- -----------------
-
- Since 1.4, Amiga Python contains some code to make it possible to use the
- Workbench to start python or python programs. The interpreter already has
- an icon. Doubleclick it to start python in interactive mode. Use the
- well-known multiselect (shift-click) to select any scripts to execute. Any
- additional files which are multi-selected will be passed as command line
- arguments.
-
- SCRIPT ICONS. Look in the `Icons' directory for icon templates: use
- def_py.info and def_pyc.info as icon templates for .py and .pyc files.
- Just make sure the default tool is set to `Python:Python'. Any tooltypes
- in the icon are converted to command line arguments for the Python
- interpreter. The `-c' option is special: don't enter the program text
- after the `-c' option, but make a NEW TOOLTYPE for it, right after the `-c'
- tooltype. Using the `-c' option you can even make python scripts which
- reside in the icon only, without a scriptfile on disk. When starting a
- Python program from the Workbench, any additional files which are
- multi-selected will be passed as command line arguments.
-
-
- SOURCE CODE and other files
- ---------------------------
-
- For the original source code distribution, which also includes all library
- files, a bunch of docs and many example programs, check
- http://www.python.org. BTW, this site contains a lot more stuff:
- reference manuals, contributed files, online documentation, FAQ's, news,
- etc. etc.
-
- For the Amiga source code, see Aminet in the same location as you found
- this. It should be named `Python14_Src.lha'.
-
-
-