Problem description - https://drive.google.com/file/d/1pIfAEW6DLZdlBZVgNvnikPDLlz2y-nyD/view

uuid_log_search.py

import collections

def club_logs_by_uuid(logs):
    logs_by_uuid = collections.defaultdict(list)
    for log in logs:
        logs_by_uuid[log.split(' ')[2]].append(log)
    
    return logs_by_uuid
    
def main():
    raw_logs = []
    while True:
        try:
            raw_logs.append(raw_input())
        except:
            break
    
    clubbed_logs = club_logs_by_uuid(raw_logs)
    for uuid in sorted(clubbed_logs.keys()):
        for log in clubbed_logs[uuid]:
            print log
        print ""  # Extra line between each group
        
if __name__ == '__main__':
    main()