Skipping error when installing packaging using PIP

Question

I run pip

pip install -r /requirements.txt

If one of my packages fails the whole things aborts and no other packages would get installed.

Is there a command that in the event of an error it will continue to install the next package?

So for my usecase: here is what I do using a fab file:

def _install_requirements():
    """
    Installs the required packages from the requirements.txt file using pip.
    """

    if not exists(config.SERVER_PROJECT_PATH + '/requirements.txt', use_sudo=True):
        print('Could not find requirements')
        return
    sudo('pip install -r %s/requirements.txt' % SERVER_PROJECT_PATH)

Answer 1

There is a handy python script for updating all libraries with pip (source):

import pip
from subprocess import call

for dist in pip.get_installed_distributions():
    call("pip install --upgrade " + dist.project_name, shell=True)

In the 'for' loop you can loop over the requirements.

# read requirements.txt file, create list of package names
for package in requirements:
    call("pip install " + package, shell=True)

This won't crash if you can't install a package.