我在 Ubuntu 12.10 上搞砸了 Python Pip 的系统版本
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I screwed up the system version of Python Pip on Ubuntu 12.10
提问by dartdog
I wanted to update pip on my main install of Python, specifically to get the list command. Which also includes the list- updates capability.
我想在我的主要 Python 安装上更新 pip，特别是为了获取 list 命令。其中还包括列表更新功能。
So I ran:
所以我跑了：
sudo pip install --upgrade pip
All looked good on the install but then I went to run pip and got this: (end of install included if it helps)
安装时一切看起来都不错，但后来我去运行 pip 并得到了这个：（如果有帮助，包括安装结束）
Installing pip script to /usr/local/bin
Installing pip-2.7 script to /usr/local/bin
Successfully installed pip
Cleaning up...
tom@tom-sam:~$ pip list -o
bash: /usr/bin/pip: No such file or directory
tom@tom-sam:~$ pip
bash: /usr/bin/pip: No such file or directory
Somewhat obviously I'm hosed since this is my system install of python.. I read a few answers here but have not been able to determine the easiest fix.
有点明显我被冲洗了，因为这是我的python系统安装..我在这里阅读了一些答案，但无法确定最简单的修复方法。
采纳答案by Martin Mohan
I had the same message on linux.
我在 linux 上有同样的消息。
/usr/bin/pip: No such file or directory
but then checked which pip was being called.
但随后检查了正在调用哪个 pip。
$ which pip
/usr/local/bin/pip
On my debian wheezy machine I fixed it doing following...
在我的 debian wheezy 机器上，我按照以下步骤修复了它...
/usr/local/bin/pip uninstall pip
apt-get remove python-pip
apt-get install python-pip
====================================
This was due to mixup installing with apt-getand updating with pip install -U pip.
==================================
这是由于apt-get与pip install -U pip.
These also installed libraries at 2 different places which caused problems for me.
这些还在 2 个不同的地方安装了库，这给我带来了问题。
/usr/lib/python2.7/dist-packages
/usr/local/lib/python2.7/dist-packages
回答by boredcoding
Before getting happy with apt-get removes and installs. It's worthwhle to reset your bash cache.
在对 apt-get 删除和安装感到满意之前。重置 bash 缓存是值得的。
hash -r
Bash will cache the path to pip using the distrubtion install (apt-get) which is /usr/bin/pip. If you're still in the same shell session, due to the cache, after updating pip from pip your shell will still look in /usr/bin/ and not /usr/local/bin/
Bash 将使用 /usr/bin/pip 的 distrubtion install (apt-get) 缓存 pip 的路径。如果您仍然在同一个 shell 会话中，由于缓存的原因，从 pip 更新 pip 后，您的 shell 仍将在 /usr/bin/ 中查找，而不是 /usr/local/bin/
for example:
例如：
$apt-get install python-pip
$which pip
/usr/bin/pip
$pip install -U pip
$which pip
/usr/bin/pip
$hash -r
$which pip
/usr/local/bin/pip
回答by サルバドル
I had the same problem as @dartdog and thanks to @Martin Mohan and @warvariuc I was able to fully uninstall pip
我遇到了与 @dartdog 相同的问题，感谢 @Martin Mohan 和 @warvariuc，我能够完全卸载 pip
Unfortunately using the command
不幸的是使用命令
apt-get install python-pip
Was installing an old version of pip so after doing
在安装旧版本的 pip 之后
/usr/local/bin/pip uninstall pip
apt-get remove python-pip
To install the latest pip version I got the get-pip.pyfile from https://bootstrap.pypa.io/get-pip.py
要安装最新的 pip 版本，我从https://bootstrap.pypa.io/get-pip.py获得了get-pip.py文件
And once in the file directory from the command line executed the command python get-pip.pyhope it helps someone
一旦在命令行中的文件目录中执行命令python get-pip.py希望它可以帮助某人
Also some of the commands need sudo good luck!!
还有一些命令需要 sudo 祝你好运！！
回答by Alex
I had the same problem running Mint 18.1 after upgrading pip. I got it resolved simply by closing and opening the terminal.
升级 pip 后，我在运行 Mint 18.1 时遇到了同样的问题。我只是通过关闭和打开终端来解决它。
回答by Adam Trizuljak
I was using pip with Python 3.5.2. Then I messed up during upgrade to Python 3.6 and I decided to revert to 3.5. After I removed pip-3.6, pip3was pointing to /usr/local/bin/pip3, but the symlink to the actual pip install directory was missing. I fixed it with
我在 Python 3.5.2 中使用 pip。然后我在升级到 Python 3.6 的过程中搞砸了，我决定恢复到 3.5。删除 pip-3.6 后，pip3指向/usr/local/bin/pip3，但缺少指向实际 pip 安装目录的符号链接。我用
sudo ln -s /usr/bin/pip3 /usr/local/bin/pip3
sudo ln -s /usr/bin/pip3 /usr/local/bin/pip3
回答by Jrct
These two answers in other threads helped me out:
其他线程中的这两个答案帮助了我：
Re-installing pip: https://stackoverflow.com/a/49997795/9377685
pip started working after step 1, but kept showing an error:
pip 在第 1 步后开始工作，但一直显示错误：
RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown.
warnings.warn(warning, RequestsDependencyWarning)
RequestsDependencyWarning: Old version of cryptography ([1, 2, 3]) may cause slowdown.
warnings.warn(warning, RequestsDependencyWarning)
This answer helped in upgrading the cryptography and PyOpenSSL: https://stackoverflow.com/a/51284877/9377685
这个答案有助于升级密码学和 PyOpenSSL：https://stackoverflow.com/a/51284877/9377685
