PIP安装在指定版本时显示语法错误

Question

当尝试使用PIP安装任何具有特定版本的依赖项时，我收到以下错误：

(myvenv) D:\Project\on-staging>pip install Fabric==1.4.3
Collecting Fabric==1.4.3
  Using cached Fabric-1.4.3.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "C:\Users\Admin\AppData\Local\Temp\pip-build-39la41_8\Fabric\setup.py", line 7, in <module>
        from fabric.version import get_version
      File "C:\Users\Admin\AppData\Local\Temp\pip-build-39la41_8\Fabric\fabric\version.py", line 104
        print get_version('all')
                        ^
    SyntaxError: invalid syntax

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in C:\Users\Admin\AppData\Local\Temp\pip-build-39la41_8\Fabric\

执行pip install Fabric可以正常工作。

Answer 1

在虚拟环境中使用python 2.7