這是 SO 上一個(gè)真正受歡迎的問題，但我看過的許多答案中沒有一個(gè)能清楚地解釋這個(gè)錯(cuò)誤的真正含義以及它發(fā)生的原因。一個(gè)混亂的來源是，當(dāng)（例如）你這樣做時(shí)pip install pycparser，你首先得到錯(cuò)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(fā)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(gè)包可以正常運(yùn)行？）到目前為止，我發(fā)現(xiàn)的最好的部分解釋是這個(gè)。