使用 pip 安装模块失败

Question

我正在尝试使用 pip3 安装 numpy。 这是我使用的命令：

pip3 install numpy（也尝试了 sudo，但它给出了同样的错误）

但我收到以下错误：

Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 33, in vendored
    __import__(vendored_name, globals(), locals(), level=0)
ImportError: No module named 'pip._vendor.distro'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/pip3", line 11, in <module>
    load_entry_point('pip==9.0.1', 'console_scripts', 'pip3')()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 561, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2631, in load_entry_point
    return ep.load()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2291, in load
    return self.resolve()
  File "/usr/lib/python3/dist-packages/pkg_resources/__init__.py", line 2297, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python3/dist-packages/pip/__init__.py", line 21, in <module>
    from pip._vendor.requests.packages.urllib3.exceptions import DependencyWarning
  File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 67, in <module>
    vendored("distro")
  File "/usr/lib/python3/dist-packages/pip/_vendor/__init__.py", line 36, in vendored
    __import__(modulename, globals(), locals(), level=0)
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 664, in _load_unlocked
  File "<frozen importlib._bootstrap>", line 634, in _load_backward_compatible
  File "/usr/share/python-wheels/distro-1.0.1-py2.py3-none-any.whl/distro.py", line 1051, in <module>
  File "/usr/share/python-wheels/distro-1.0.1-py2.py3-none-any.whl/distro.py", line 595, in __init__
  File "/usr/share/python-wheels/distro-1.0.1-py2.py3-none-any.whl/distro.py", line 932, in _get_lsb_release_info
subprocess.CalledProcessError: Command 'lsb_release -a' returned non-zero exit status 1

这是我尝试安装任何 Python 模块时的问题 直到几天前，它还运行良好。

我尝试完全删除 pip，然后重新安装它。但我得到同样的错误 现在没有一个包是通过 pip 安装的。

我有 python 3.6.5

我该如何解决这个问题？

Answer 1

我也有这个问题。 我通过安装 anaconda 并安装所有 ml 包解决了这个问题

Answer 2

我在将系统默认设置为 Python3.5 后遇到了这个问题。奇怪的是，pip3 似乎需要 Python2.7 才能运行；运行 # update-alternatives --config python 并选择 Python2.7 让 pip3 再次为我工作。我刚刚以这种方式安装了pygame，在将系统默认切换回Python3.5后它按预期工作。这是Devuan ASCII 和

$ python --version
Python 3.5.3
$ pip3 --version 
...
subprocess.CalledProcessError: Command 'lsb_release -a' returned non-zero exit status 1

$ sudo update-alternatives --config python
There are 2 choices for the alternative python (providing /usr/bin/python).

  Selection    Path                Priority   Status
------------------------------------------------------------
  0            /usr/bin/python3.5   2         auto mode
  1            /usr/bin/python2.7   1         manual mode
* 2            /usr/bin/python3.5   2         manual mode

Press <enter> to keep the current choice[*], or type selection number: 1

$ python --version
Python 2.7.13
$ pip3 --version 
pip 9.0.1 from /usr/lib/python3/dist-packages (python 3.5)

编辑：在 Raspbian Stretch 上 pip3 使用 Python3.5 作为系统默认值，所以这显然不是完整的故事：

$ python --version
Python 3.5.3
$ pip3 --version
pip 9.0.1 from /usr/lib/python3/dist-packages (python 3.5)