Python 在 windows 7 中未被识别为内部或外部命令

Question

I have installed python 2.7.11 from this link and then restarted my system. However when I go to cmd and run python --version . It gives me an error that

python not recognized as an internal or external command.

So I try to manually add it to my Path variable I see my python being installed at C:\Python27 so I add someotherpath;C:\Python27 to path variable and reopened windows cmd . But it still gives me the same error.

Is there some other way to get over with this problem.

Thanks

Answer 1

Changes in PATH variable do not affect already open programs. Close your command line (or powershell) window and reopen it in order to use new PATH variable.

Answer 2

Please run the following command in the command prompt.

echo %PATH% It should have whatever path you have set manually. Otherwise Open a new Command prompt and try the same command. Run python

If it is not working after that.

Please kindly check the Python.exe is available in C:\\Python or Not ?

Answer 3

I got same error there are two ways to solve 1)Try using py --version

2)If py is also not recognised than uninstall python and install it again but select the add to path option as show in fig this time

Answer 4

解决此问题的最简单方法是重新安装 Python 并在安装过程中选中“添加到路径”按钮。

Answer 5

Python2.7 contains a scripts that adds location to path for windows.

So running

C:\Python27\Tools\Scripts\win_add2path.py

solved my issue