Can I somehow disable warning from PIP while it installs packages? I haven't found such an option in pip usage! I'm trying to install packages using python script (2.7.8) and check whether it was successful: p = subprocess.Popen( 'pip install requests', shell=True, executable='/bin/bash', stdout=subprocess.PIPE, stderr=subprocess.PIPE ) out, err = p.communicate() if err: sys.stdout.write('Error occured while executing: %s' % err) I get a warning from PIP: You are using pip version 7.1.2, however version 8.1.1 is available. You should consider upgrading via the 'pip install --upgrade pip' command. And I'm not allowed to upgrade PIP, I need to use this one. Continue reading...