Python calls external command: subprocess module

Subprocess.call (): Used to execute shell command, the result is printed directly to the terminal

Subprocess.check_call (): Usage is consistent with subprocess.call (), except that it throws an exception when the command executes an error, so that we can capture and process

in [1]: Import Subprocessin [2]: Subprocess.call ('ls' # Executes the LS command directly, the command result is printed to the terminal and returns the status code after the command executes 1. py2. pyout[2]:0In [3]: Subprocess.call ('ls-l', shell=True) # If the command has parameters, you need to add shell=true later, otherwise you will get an error 8-rw-r--r--.1Root root485Oct in  -: * 1. PY-rw-r--r--.1Root root374Oct -  -: - 2. pyout[3]:0

Python calls external command: subprocess module