Fatal error in launcher: Unable to create process 安装报错信息
python3.6执行pip3时 Unable to create process using ‘"’
背景:
由于在windows操作系统中已经安装了python2.7,之前安装过python3.4,现已卸载,
将python3.6安装在C:\Python36目录下
然后进入C:\Python36目录下执行pip -V能正常使用
但是为了同时使用python2和python3,于是将python.exe改名为python3.exe,重新执行pip -V
发现错误
C:\Python36>pip3
Fatal error in launcher: Unable to create process using '"'
之前使用python3.4的经验是:升级pip
python3 -m pip install -U pip
但是由于pip已经是最新版本了
C:\Python36>python3 -m pip install -U pip
Requirement already up-to-date: pip in c:\python36\lib\site-packages\pip-9.0.1-py3.6.egg
解决方法:
- 删除C:\Python36\Lib\site-packages\pip软件包,重新下载pip-9.0.1(注意是.tar.gz格式的安装包)
- 然后进入pip-9.0.1安装包后执行python3 setup.py install,进行安装
- 最后删除C:\Python36\Scripts目录下的pip.exe
效果:
- C:\Python36>pip -V
- pip 9.0.1 from C:\Python27\lib\site-packages
(python 2.7)
- C:\Python36>pip3 -V pip 9.0.1 from
- C:\Python36\lib\site-packages\
- pip-9.0.1-py3.6.egg (python 3.6)