Save and Load JSON

Lab Python Intermediate 20 points

Read n lines task done (done is yes/no). Save the list of tasks as JSON to todo.json (each task a dict with task and done as a boolean). Load it back and print [x] task or [ ] task for each, then the number of tasks still to do.

Input

Line 1: n. Then n lines.

Output

n + 1 lines.

Example

Input

3
shop yes
code no
sleep no

Output

[x] shop
[ ] code
[ ] sleep
2

Sample input available Sample output available

Editor

Python

Hints

json.dump(data, file) writes JSON; json.load(file) reads it.

Solution explanation

JSON files are a simple way to save program state between runs.

Show solution

import json

tasks = []
for _ in range(int(input())):
    name, done = input().split()
    tasks.append({"task": name, "done": done == "yes"})
with open("todo.json", "w") as f:
    json.dump(tasks, f)

with open("todo.json") as f:
    loaded = json.load(f)
for t in loaded:
    print(f"[{'x' if t['done'] else ' '}] {t['task']}")
print(sum(not t["done"] for t in loaded))

Output

Answer