97 lines
4.2 KiB
Python
97 lines
4.2 KiB
Python
#-----------------------------------------------------------------------------
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# Copyright (c) 2005-2023, PyInstaller Development Team.
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#
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# Distributed under the terms of the GNU General Public License (version 2
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# or later) with exception for distributing the bootloader.
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#
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# The full license is in the file COPYING.txt, distributed with this software.
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#
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# SPDX-License-Identifier: (GPL-2.0-or-later WITH Bootloader-exception)
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#-----------------------------------------------------------------------------
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def _pyi_bootstrap():
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#-- Start bootstrap process
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# Only python built-in modules and modules from base_library.zip can be used at this point.
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import sys # built-in
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import os # base_library.zip
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# Extend Python import machinery with our importer(s).
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import pyimod02_importers
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pyimod02_importers.install()
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#-- Bootstrap process is complete.
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# We can now use python modules that were collected into PYZ archive.
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# Let other python modules know that the code is running in frozen mode.
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if not hasattr(sys, 'frozen'):
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sys.frozen = True
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# NOTE: sys._MEIPASS is set by the bootloader.
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# Some packages behave differently when running inside virtual environment. E.g., IPython tries to append path
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# VIRTUAL_ENV to sys.path. For the frozen app we want to prevent this behavior.
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VIRTENV = 'VIRTUAL_ENV'
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if VIRTENV in os.environ:
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# On some platforms (e.g., AIX) 'os.unsetenv()' is unavailable and deleting the var from os.environ does not
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# delete it from the environment.
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os.environ[VIRTENV] = ''
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del os.environ[VIRTENV]
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# At least on Windows, Python seems to hook up the codecs on this import, so it is not enough to just package up all
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# the encodings.
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#
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# It was also reported that without 'encodings' module, the frozen executable fails to load in some configurations:
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# http://www.pyinstaller.org/ticket/651
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#
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# Importing 'encodings' module in a run-time hook is not enough, since some run-time hooks require this module, and
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# the order of running the code from the run-time hooks is not defined.
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try:
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import encodings
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except ImportError:
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encodings = None
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# Starting with python 3.15.0b1, the `encodings` package is frozen (in the cpython sense), along with some of its
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# submodules; see https://github.com/python/cpython/commit/0012686d92fe51f426bcd6797e2f2a50ad4ac74. Consequently,
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# the `encodings/__init__.pyc` module from our `base_library.zip` is not used anymore, and so the `encodings`
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# directory in our base library archive is not searched, albeit it contains all non-frozen encoding modules.
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# Therefore, we need to manually add that directory to `encodings.__path__`, otherwise we end up missing support
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# for most of encodings.
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if encodings and hasattr(encodings, '__path__'):
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encodings_dir = os.path.join(sys._MEIPASS, 'base_library.zip', 'encodings')
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if encodings_dir not in encodings.__path__:
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encodings.__path__.append(encodings_dir)
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# In the Python interpreter 'warnings' module is imported when 'sys.warnoptions' is not empty. Mimic this behavior.
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if sys.warnoptions:
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try:
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import warnings # noqa: F401
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except ImportError:
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pass
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# Install the hooks for ctypes
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import pyimod03_ctypes # noqa: E402
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pyimod03_ctypes.install()
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# Install the hooks for pywin32 (Windows only)
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if sys.platform.startswith('win'):
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import pyimod04_pywin32
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pyimod04_pywin32.install()
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# Apply a hack for metadata that was collected from (unzipped) python eggs; the EGG-INFO directories are collected
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# into their parent directories (my_package-version.egg/EGG-INFO), and for metadata to be discoverable by
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# `importlib.metadata`, the .egg directory needs to be in `sys.path`. The deprecated `pkg_resources` does not have
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# this limitation, and seems to work as long as the .egg directory's parent directory (in our case `sys._MEIPASS`
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# is in `sys.path`).
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for entry in os.listdir(sys._MEIPASS):
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entry = os.path.join(sys._MEIPASS, entry)
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if not os.path.isdir(entry):
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continue
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if entry.endswith('.egg'):
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sys.path.append(entry)
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_pyi_bootstrap()
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del _pyi_bootstrap
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