這是 SO 上一個真正受歡迎的問題，但我看過的許多答案中沒有一個能清楚地解釋這個錯誤的真正含義以及它發生的原因。一個混亂的來源是，當（例如）你這樣做時pip install pycparser，你首先得到錯誤：Failed building wheel for pycparser然后是消息包是：Successfully installed pycparser-2.19.# pip3 install pycparserCollecting pycparser  Using cached https://files.pythonhosted.org/packages/68/9e/49196946aee219aead1290e00d1e7fdeab8567783e83e1b9ab5585e6206a/pycparser-2.19.tar.gzBuilding wheels for collected packages: pycparser  Running setup.py bdist_wheel for pycparser ... error  Complete output from command /usr/bin/python3 -u -c "import setuptools, tokenize;__file__='/tmp/pip-install-g_v28hpp/pycparser/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" bdist_wheel -d /tmp/pip-wheel-__w_f6p0 --python-tag cp36:  Traceback (most recent call last):    File "<string>", line 1, in <module>    ...    File "/usr/lib/python3.6/site-packages/pkg_resources/__init__.py", line 2349, in resolve      module = __import__(self.module_name, fromlist=['__name__'], level=0)  ModuleNotFoundError: No module named 'wheel.bdist_wheel'  ----------------------------------------  Failed building wheel for pycparser  Running setup.py clean for pycparserFailed to build pycparserInstalling collected packages: pycparser  Running setup.py install for pycparser ... doneSuccessfully installed pycparser-2.19這里發生了什么？（我想了解某些東西是如何失敗但仍然可以安裝的，以及您是否可以相信這個包可以正常運行？）到目前為止，我發現的最好的部分解釋是這個。