pyinstaller 打包exe运行错误 No module named 'pkg_resources.py2_warn'

背景：

使用pyinstaller打包好exe后，运行出现以下错误。在更新pip的python库前打包是可以正常运行的。

打包过程没有出现任何错误提示。环境python3.7.4 win64

Traceback (most recent call last):
  File "site-packages\PyInstaller\loader\rthooks\pyi_rth_pkgres.py", line 13, in
 <module>
  File "c:\program files\python37\lib\site-packages\PyInstaller\loader\pyimod03_
importers.py", line 623, in exec_module
    exec(bytecode, module.__dict__)
  File "site-packages\pkg_resources\__init__.py", line 86, in <module>
ModuleNotFoundError: No module named 'pkg_resources.py2_warn'
[3844] Failed to execute script pyi_rth_pkgres

解决方法：

我的方法是：找到 \Python37\Lib\site-packages\pkg_resources\__init__.py，把86行 注释掉。重新打包即可。

__import__('pkg_resources.extern.packaging.version')
__import__('pkg_resources.extern.packaging.specifiers')
__import__('pkg_resources.extern.packaging.requirements')
__import__('pkg_resources.extern.packaging.markers')
#__import__('pkg_resources.py2_warn')


__metaclass__ = type

 

详细说明：

出现这种错误主要升级了pip里的python库导致的。所以按照网上说明，降级pip对应库即可。然而要配对py版本和库的版本很麻烦。而且牵一发而动全身。

我根据错误提示说明找到了该__init__.py文件。86行的意思是导入py2_warn。于是看了下该目录py2_warn.py文件.

#py2_warn.py
import sys
import warnings
import textwrap


msg = textwrap.dedent("""
    You are running Setuptools on Python 2, which is no longer
    supported and
    >>> SETUPTOOLS WILL STOP WORKING <<<
    in a subsequent release (no sooner than 2020-04-20).
    Please ensure you are installing
    Setuptools using pip 9.x or later or pin to `setuptools<45`
    in your environment.
    If you have done those things and are still encountering
    this message, please comment in
    https://github.com/pypa/setuptools/issues/1458
    about the steps that led to this unsupported combination.
    """)

pre = "Setuptools will stop working on Python 2\n"

sys.version_info < (3,) and warnings.warn(pre + "*" * 60 + msg + "*" * 60)

逻辑大概是“python版本小于3，则提示警告“。这逻辑对运行根本没影响。注释掉在__init__.py的引用即可。

其实可以看下官网，按照作者所说，“【翻译】（这库）放弃了python2的支持，（调用）需要python3.5或以上的版本”。

至于为什么我明明python3.7还因导入这玩意儿报错就不知道了。大概pyinstaller为了兼容性干了什么东西把。

来源：oschina

链接：https://my.oschina.net/jacky326/blog/3168864