#NEWLINE# def contrib_apps( * apps ) : #NEWLINE# #INDENT# 'Check if all listed apps are installed.' #NEWLINE# for app in apps : #NEWLINE# #INDENT# if ( ( 'django.contrib.%s' % app ) not in settings . INSTALLED_APPS ) : #NEWLINE# #INDENT# return False #NEWLINE# #UNINDENT# #UNINDENT# return True