templates.py 文件源码

def validate_name(self, name, app_or_project):
        if name is None:
            raise CommandError("you must provide %s %s name" % (
                "an" if app_or_project == "app" else "a", app_or_project))
        # If it's not a valid directory name.
        if not re.search(r'^[_a-zA-Z]\w*$', name):
            # Provide a smart error message, depending on the error.
            if not re.search(r'^[_a-zA-Z]', name):
                message = 'make sure the name begins with a letter or underscore'
            else:
                message = 'use only numbers, letters and underscores'
            raise CommandError("%r is not a valid %s name. Please %s." %
                               (name, app_or_project, message))