Count MutexApplicationJob::LockAcquisitionError in a list of logs

parse.py

import json
from collections import defaultdict

LEADING = """MutexApplicationJob::LockAcquisitionError: Failed to acquire lock for key: FB_MESSAGE_CREATE_LOCK::"""


def get_logs():
    f = open('logs.json')
    return json.load(f)


def count_logs():
    logs = get_logs()
    counter = defaultdict(int)

    for item in logs:
        message = item['message']
        if message.startswith(LEADING):
            message = message.replace(LEADING, "")

            counter[message] += 1

    return counter


if __name__ == "__main__":
    counts = count_logs()
    # sort the counts by value, descending
    sorted_counts = sorted(counts.items(), key=lambda x: x[1], reverse=True)
    # print the top 10
    print(sorted_counts)