def parse_course_key(course_identifier):
    """
    Return the serialized course key given either a course run ID or course key.
    """
    try:
        course_run_key = CourseKey.from_string(course_identifier)
    except InvalidKeyError:
        # Assume we already have a course key.
        return course_identifier

    return quote_plus(' '.join([course_run_key.org, course_run_key.course]))
def parse_course_key(course_identifier):
    """
    Return the serialized course key given either a course run ID or course key.
    """
    try:
        course_run_key = CourseKey.from_string(course_identifier)
    except InvalidKeyError:
        # Assume we already have a course key.
        return course_identifier

    return quote_plus(' '.join([course_run_key.org, course_run_key.course]))
def parse_course_key ( course_identifier ) : try : course_run_key = CourseKey . from_string ( course_identifier ) except InvalidKeyError : # Assume we already have a course key. return course_identifier return quote_plus ( ' ' . join ( [ course_run_key . org , course_run_key . course ] ) )
Return the serialized course key given either a course run ID or course key.
Return the serialized course key given either a course run ID or course key .