system.py

# python use system(3) as if c use int system(const char *command); in stdlib.h
def system(cmd, shell=True):
    print('>', cmd)
    pipe = subprocess.Popen(cmd, shell=shell, stdout=subprocess.PIPE)
    pipe.wait()
    text = pipe.communicate()[0]
    print(text)
    print('>', cmd, 'end')