当Python 2.7默认时使用Python 3，pip安装错误

Question

我最初同时安装了python 2.7和python 3，python 2.7作为我在PATH中的默认值。我需要使用python 3运行脚本，但由于某种原因无法将其设置为默认的Python路径。刚刚卸载Python 2.7版后，我开了3跑命令python get-pip.py安装这给了我这个错误

C:\Python30>python get-pip.py install 
Traceback (most recent call last): 
    File "c:\users\jacob\appdata\local\temp\tmplqxvtx\pip.zip\pip\compat\__init__.py",  line 16, in <module> 
ImportError: cannot import name OrderedDict 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "get-pip.py", line 19177, in <module> 
    main() 
    File "get-pip.py", line 194, in main 
    bootstrap(tmpdir=tmpdir) 
    File "get-pip.py", line 82, in bootstrap 
    import pip 
    File "c:\users\jacob\appdata\local\temp\tmplqxvtx\pip.zip\pip\__init__.py", line 14, in <module> 
    File "c:\users\jacob\appdata\local\temp\tmplqxvtx\pip.zip\pip\utils\__init__.py",  line 22, in <module> 
    File "c:\users\jacob\appdata\local\temp\tmplqxvtx\pip.zip\pip\compat\__init__.py",  line 18, in <module> 
    File "c:\users\jacob\appdata\local\temp\tmplqxvtx\pip.zip\pip\compat\ordereddict.py",  line 25, in <module> 
ImportError: No module named UserDict 

我已经尝试过python -m pip install（模块名称），但它返回No module named pip

Answer 1

我想你使用windows，所以这里是一个答案如何在Windows上安装PIP：

how-do-i-install-pip-on-windows

在Linux上，你可以只输入：

sudo apt install python-pip