First of all, you are cutting out the middleman; subprocess.call by default avoids spawning a shell that examines your command, and directly spawns the requested process. This is important because, besides the efficiency side of the matter, you don’t have much control over the default shell behavior, and it actually typically works against you regarding … Read more
It is more usual to import the other script and then invoke its functions and methods. If that does not work for you, e.g. the other script is not written in such a way that is conducive to being imported, then you can use the subprocess module to start another process. import subprocess p = … Read more
Ok, if I understand you correctly you want to: pass an argument to another script retrieve an output from another script to original caller I’ll recommend using subprocess module. Easiest way would be to use check_output() function. Run command with arguments and return its output as a byte string. Sample solution: script1.py import sys import … Read more
Use subprocess: import subprocess print(subprocess.check_output([‘nslookup’, ‘google.com’])) If the return code is not zero it will raise a CalledProcessError exception: try: print(subprocess.check_output([‘nslookup’, ‘google.com’])) except subprocess.CalledProcessError as err: print(err) os.system only returns the exit code of the command. Here 0 means success. Any other number stands for an operating-system-dependent error. The output goes to stdout of this … Read more
Use the subprocess module: subprocess.check_output returns the output of a command as a string. >>> import subprocess >>> print subprocess.check_output.__doc__ Run command with arguments and return its output as a byte string. If the exit code was non-zero it raises a CalledProcessError. The CalledProcessError object will have the return code in the returncode attribute and … Read more
os.system() returns the (encoded) process exit value. 0 means success: On Unix, the return value is the exit status of the process encoded in the format specified for wait(). Note that POSIX does not specify the meaning of the return value of the C system() function, so the return value of the Python function is … Read more
On a unix system, you can redirect stderr and stdout to /dev/null as part of the command itself. os.system(cmd + “> /dev/null 2>&1”)
What gets returned is the return value of executing this command. What you see in while executing it directly is the output of the command in stdout. That 0 is returned means, there was no error in execution. Use popen etc for capturing the output . Some thing along this line: import subprocess as sub … Read more
If all you need is the stdout output, then take a look at subprocess.check_output(): import subprocess batcmd=”dir” result = subprocess.check_output(batcmd, shell=True) Because you were using os.system(), you’d have to set shell=True to get the same behaviour. You do want to heed the security concerns about passing untrusted arguments to your shell. If you need to … Read more