<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def update_qa(quietly=False):
 """ Merge code from develop to qa """

    switch('dev')
    switch('qa')
    local('git merge --no-edit develop')
    local('git push')
    if not quietly:
        print(red('PLEASE DEPLOY CODE: fab deploy:all'))