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bpo-20443: _PyConfig_Read() gets the absolute path of run_filename (GH-14053)

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Python now gets the absolute path of the script filename specified on
the command line (ex: "python3 script.py"): the __file__ attribute of
the __main__ module, sys.argv[0] and sys.path[0] become an absolute
path, rather than a relative path.

* Add _Py_isabs() and _Py_abspath() functions.
* _PyConfig_Read() now tries to get the absolute path of
  run_filename, but keeps the relative path if _Py_abspath() fails.
* Reimplement os._getfullpathname() using _Py_abspath().
* Use _Py_isabs() in getpath.c.
This commit is contained in:
Victor Stinner 2019-06-25 15:02:43 +02:00 • committed by GitHub
parent 080b6b40fa
commit 3939c321c9
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10 changed files with 211 additions and 42 deletions
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6
Include/fileutils.h
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@ -154,6 +154,12 @@ PyAPI_FUNC(wchar_t*) _Py_wrealpath(
size_t resolved_path_len);
#endif
#ifndef MS_WINDOWS
PyAPI_FUNC(int) _Py_isabs(const wchar_t *path);
#endif
PyAPI_FUNC(int) _Py_abspath(const wchar_t *path, wchar_t **abspath_p);
PyAPI_FUNC(wchar_t*) _Py_wgetcwd(
wchar_t *buf,
/* Number of characters of 'buf' buffer