capybara/virtualenv/lib/python2.7/site-packages/pip/compat/dictconfig.py
def add_handlers(self, logger, handlers):
        """Add handlers to a logger from a list of names."""
        for h in handlers:
            try:
                logger.addHandler(self.config['handlers'][h])
            except StandardError as e:
                raise ValueError('Unable to add handler %r: %s' % (h, e))
def add_handlers(self, logger, handlers):
        """Add handlers to a logger from a list of names."""
        for h in handlers:
            try:
                logger.addHandler(self.config['handlers'][h])
            except StandardError as e:
                raise ValueError('Unable to add handler %r: %s' % (h, e))
Add handlers to a logger from a list of names.