chapter 3 & updated pdf

Author: JFiTech

Scripts/chapter3/looping/Util/1_simple_for.py

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+fornumberin [0, 1, 2, 3, 4]:
+print(number)

Scripts/chapter3/looping/Util/__init__.py

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+# don't import any costly modules
+importsys
+importos
+
+
+is_pypy='__pypy__'insys.builtin_module_names
+
+
+defwarn_distutils_present():
+if'distutils'notinsys.modules:
+return
+ifis_pypyandsys.version_info< (3, 7):
+# PyPy for 3.6 unconditionally imports distutils, so bypass the warning
+# https://foss.heptapod.net/pypy/pypy/-/blob/be829135bc0d758997b3566062999ee8b23872b4/lib-python/3/site.py#L250
+return
+importwarnings
+
+warnings.warn(
+"Distutils was imported before Setuptools, but importing Setuptools "
+"also replaces the `distutils` module in `sys.modules`. This may lead "
+"to undesirable behaviors or errors. To avoid these issues, avoid "
+"using distutils directly, ensure that setuptools is installed in the "
+"traditional way (e.g. not an editable install), and/or make sure "
+"that setuptools is always imported before distutils."
+ )
+
+
+defclear_distutils():
+if'distutils'notinsys.modules:
+return
+importwarnings
+
+warnings.warn("Setuptools is replacing distutils.")
+mods= [
+name
+fornameinsys.modules
+ifname=="distutils"orname.startswith("distutils.")
+ ]
+fornameinmods:
+delsys.modules[name]
+
+
+defenabled():
+"""
+ Allow selection of distutils by environment variable.
+ """
+which=os.environ.get('SETUPTOOLS_USE_DISTUTILS', 'local')
+returnwhich=='local'
+
+
+defensure_local_distutils():
+importimportlib
+
+clear_distutils()
+
+# With the DistutilsMetaFinder in place,
+# perform an import to cause distutils to be
+# loaded from setuptools._distutils. Ref #2906.
+withshim():
+importlib.import_module('distutils')
+
+# check that submodules load as expected
+core=importlib.import_module('distutils.core')
+assert'_distutils'incore.__file__, core.__file__
+assert'setuptools._distutils.log'notinsys.modules
+
+
+defdo_override():
+"""
+ Ensure that the local copy of distutils is preferred over stdlib.
+
+ See https://github.com/pypa/setuptools/issues/417#issuecomment-392298401
+ for more motivation.
+ """
+ifenabled():
+warn_distutils_present()
+ensure_local_distutils()
+
+
+class_TrivialRe:
+def__init__(self, *patterns):
+self._patterns=patterns
+
+defmatch(self, string):
+returnall(patinstringforpatinself._patterns)
+
+
+classDistutilsMetaFinder:
+deffind_spec(self, fullname, path, target=None):
+# optimization: only consider top level modules and those
+# found in the CPython test suite.
+ifpathisnotNoneandnotfullname.startswith('test.'):
+return
+
+method_name='spec_for_{fullname}'.format(**locals())
+method=getattr(self, method_name, lambda: None)
+returnmethod()
+
+defspec_for_distutils(self):
+ifself.is_cpython():
+return
+
+importimportlib
+importimportlib.abc
+importimportlib.util
+
+try:
+mod=importlib.import_module('setuptools._distutils')
+exceptException:
+# There are a couple of cases where setuptools._distutils
+# may not be present:
+# - An older Setuptools without a local distutils is
+# taking precedence. Ref #2957.
+# - Path manipulation during sitecustomize removes
+# setuptools from the path but only after the hook
+# has been loaded. Ref #2980.
+# In either case, fall back to stdlib behavior.
+return
+
+classDistutilsLoader(importlib.abc.Loader):
+defcreate_module(self, spec):
+mod.__name__='distutils'
+returnmod
+
+defexec_module(self, module):
+pass
+
+returnimportlib.util.spec_from_loader(
+'distutils', DistutilsLoader(), origin=mod.__file__
+ )
+
+@staticmethod
+defis_cpython():
+"""
+ Suppress supplying distutils for CPython (build and tests).
+ Ref #2965 and #3007.
+ """
+returnos.path.isfile('pybuilddir.txt')
+
+defspec_for_pip(self):
+"""
+ Ensure stdlib distutils when running under pip.
+ See pypa/pip#8761 for rationale.
+ """
+ifself.pip_imported_during_build():
+return
+clear_distutils()
+self.spec_for_distutils=lambda: None
+
+@classmethod
+defpip_imported_during_build(cls):
+"""
+ Detect if pip is being imported in a build script. Ref #2355.
+ """
+importtraceback
+
+returnany(
+cls.frame_file_is_setup(frame) forframe, lineintraceback.walk_stack(None)
+ )
+
+@staticmethod
+defframe_file_is_setup(frame):
+"""
+ Return True if the indicated frame suggests a setup.py file.
+ """
+# some frames may not have __file__ (#2940)
+returnframe.f_globals.get('__file__', '').endswith('setup.py')
+
+defspec_for_sensitive_tests(self):
+"""
+ Ensure stdlib distutils when running select tests under CPython.
+
+ python/cpython#91169
+ """
+clear_distutils()
+self.spec_for_distutils=lambda: None
+
+sensitive_tests= (
+ [
+'test.test_distutils',
+'test.test_peg_generator',
+'test.test_importlib',
+ ]
+ifsys.version_info< (3, 10)
+else [
+'test.test_distutils',
+ ]
+ )
+
+
+fornameinDistutilsMetaFinder.sensitive_tests:
+setattr(
+DistutilsMetaFinder,
+f'spec_for_{name}',
+DistutilsMetaFinder.spec_for_sensitive_tests,
+ )
+
+
+DISTUTILS_FINDER=DistutilsMetaFinder()
+
+
+defadd_shim():
+DISTUTILS_FINDERinsys.meta_pathorinsert_shim()
+
+
+classshim:
+def__enter__(self):
+insert_shim()
+
+def__exit__(self, exc, value, tb):
+remove_shim()
+
+
+definsert_shim():
+sys.meta_path.insert(0, DISTUTILS_FINDER)
+
+
+defremove_shim():
+try:
+sys.meta_path.remove(DISTUTILS_FINDER)
+exceptValueError:
+pass

Scripts/chapter3/looping/looping/Lib/site-packages/_distutils_hack/__init__.py

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+__import__('_distutils_hack').do_override()

Scripts/chapter3/looping/looping/Lib/site-packages/_distutils_hack/__pycache__/__init__.cpython-311.pyc

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+import os; var = 'SETUPTOOLS_USE_DISTUTILS' enabled = os.environ.get(var, 'local') == 'local' enabled and __import__('_distutils_hack').add_shim(); 

Scripts/chapter3/looping/looping/Lib/site-packages/_distutils_hack/__pycache__/override.cpython-311.pyc

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+pip

Scripts/chapter3/looping/looping/Lib/site-packages/_distutils_hack/override.py

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+Copyright (c) 2008-present The pip developers (see AUTHORS.txt file)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Scripts/chapter3/looping/looping/Lib/site-packages/distutils-precedence.pth

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+Metadata-Version: 2.1
+Name: pip
+Version: 22.3.1
+Summary: The PyPA recommended tool for installing Python packages.
+Home-page: https://pip.pypa.io/
+Author: The pip developers
+Author-email: [email protected]
+License: MIT
+Project-URL: Documentation, https://pip.pypa.io
+Project-URL: Source, https://github.com/pypa/pip
+Project-URL: Changelog, https://pip.pypa.io/en/stable/news/
+Classifier: Development Status :: 5 - Production/Stable
+Classifier: Intended Audience :: Developers
+Classifier: License :: OSI Approved :: MIT License
+Classifier: Topic :: Software Development :: Build Tools
+Classifier: Programming Language :: Python
+Classifier: Programming Language :: Python :: 3
+Classifier: Programming Language :: Python :: 3 :: Only
+Classifier: Programming Language :: Python :: 3.7
+Classifier: Programming Language :: Python :: 3.8
+Classifier: Programming Language :: Python :: 3.9
+Classifier: Programming Language :: Python :: 3.10
+Classifier: Programming Language :: Python :: 3.11
+Classifier: Programming Language :: Python :: Implementation :: CPython
+Classifier: Programming Language :: Python :: Implementation :: PyPy
+Requires-Python: >=3.7
+License-File: LICENSE.txt
+
+pip - The Python Package Installer
+==================================
+
+.. image:: https://img.shields.io/pypi/v/pip.svg
+ :target: https://pypi.org/project/pip/
+
+.. image:: https://readthedocs.org/projects/pip/badge/?version=latest
+ :target: https://pip.pypa.io/en/latest
+
+pip is the `package installer`_ for Python. You can use pip to install packages from the `Python Package Index`_ and other indexes.
+
+Please take a look at our documentation for how to install and use pip:
+
+* `Installation`_
+* `Usage`_
+
+We release updates regularly, with a new version every 3 months. Find more details in our documentation:
+
+* `Release notes`_
+* `Release process`_
+
+In pip 20.3, we've `made a big improvement to the heart of pip`_; `learn more`_. We want your input, so `sign up for our user experience research studies`_ to help us do it right.
+
+**Note**: pip 21.0, in January 2021, removed Python 2 support, per pip's `Python 2 support policy`_. Please migrate to Python 3.
+
+If you find bugs, need help, or want to talk to the developers, please use our mailing lists or chat rooms:
+
+* `Issue tracking`_
+* `Discourse channel`_
+* `User IRC`_
+
+If you want to get involved head over to GitHub to get the source code, look at our development documentation and feel free to jump on the developer mailing lists and chat rooms:
+
+* `GitHub page`_
+* `Development documentation`_
+* `Development IRC`_
+
+Code of Conduct
+---------------
+
+Everyone interacting in the pip project's codebases, issue trackers, chat
+rooms, and mailing lists is expected to follow the `PSF Code of Conduct`_.
+
+.. _package installer: https://packaging.python.org/guides/tool-recommendations/
+.. _Python Package Index: https://pypi.org
+.. _Installation: https://pip.pypa.io/en/stable/installation/
+.. _Usage: https://pip.pypa.io/en/stable/
+.. _Release notes: https://pip.pypa.io/en/stable/news.html
+.. _Release process: https://pip.pypa.io/en/latest/development/release-process/
+.. _GitHub page: https://github.com/pypa/pip
+.. _Development documentation: https://pip.pypa.io/en/latest/development
+.. _made a big improvement to the heart of pip: https://pyfound.blogspot.com/2020/11/pip-20-3-new-resolver.html
+.. _learn more: https://pip.pypa.io/en/latest/user_guide/#changes-to-the-pip-dependency-resolver-in-20-3-2020
+.. _sign up for our user experience research studies: https://pyfound.blogspot.com/2020/03/new-pip-resolver-to-roll-out-this-year.html
+.. _Python 2 support policy: https://pip.pypa.io/en/latest/development/release-process/#python-2-support
+.. _Issue tracking: https://github.com/pypa/pip/issues
+.. _Discourse channel: https://discuss.python.org/c/packaging
+.. _User IRC: https://kiwiirc.com/nextclient/#ircs://irc.libera.chat:+6697/pypa
+.. _Development IRC: https://kiwiirc.com/nextclient/#ircs://irc.libera.chat:+6697/pypa-dev
+.. _PSF Code of Conduct: https://github.com/pypa/.github/blob/main/CODE_OF_CONDUCT.md