centos 设置python环境变量

To set the Python environment variable on CentOS, you can follow these steps:

1. Determine the path to your Python installation by running the following command:

which python

This will give you the path to the Python executable, which is usually `/usr/bin/python` for the system Python installation.

2. Set the `PATH` environment variable to include the path to your Python installation. You can do this by running the following command:

export PATH=/path/to/python/bin:$PATH

Replace `/path/to/python/bin` with the path to your Python installation. For example, if your Python executable is located at `/usr/bin/python3.6`, the command would be:

export PATH=/usr/bin/python3.6:$PATH

3. To make this change permanent, add the `export` command to your shell's configuration file (e.g. `~/.bashrc` for Bash). Open the file in a text editor and add the following line at the end:

export PATH=/path/to/python/bin:$PATH

Save the file and exit the editor.

4. Finally, reload your shell's configuration by running:

source ~/.bashrc

This will apply the changes to your current shell session. You can now verify that the Python environment variable is set correctly by running `python` or `python3` in the terminal.