重定向python中的系统调用输出

Question

I wish to execute os.system('ls') in python. the return value of this statement is an error code integer..but I want to get the contents of the present directory as a string. How to accomplish this?

Answer 1

os.listdir(".")

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In general, if you want to call a function and get the arguments, you should use subprocess.Popen() . But a lot of the basic directory stuff is in the os module so you don't have to do that.

Answer 2

Python as build-in functionality like os.listdir() or os.walk() for listing stuff on the filesystem. Running 'ls' yourself is very bad-style. In general look at the documentation of the subprocess module giving you all flexibility for interacting with external commands.