Python invokes system command shell command

Using Python to invoke system commands, there are 3 basic options:

1. Using the OS module's system method

Import Osos.system ('ls')

2. Popen method using the OS module

Import Osos.popen ('ls')

3. Getstatusoutput method using the Commands module

Import commandscommands.getstatusoutput ('ls')

The above 3 ways can call system commands, but in the third way, if the system command error, such as mkdir an existing directory, it will not send out the error message. In the first two ways, the return value is returned and the error message is called out.

Python invokes system command shell command