问Python dict的行为不一致

EN

import json
import os
import bottle

from api import ping_response, start_response, move_response, end_response
from game import game

# Store all games running on server
active_games = dict()

@bottle.post('/start')
def start():
    global active_games
    data = bottle.request.json
    new_game = game(data["game"]["id"])

    active_games[str(data["game"]["id"])] = new_game

    print(active_games)

    return new_game.start(data)

@bottle.post('/move')
def move():
    global active_games
    data = bottle.request.json

    print(active_games)

    return active_games.get(str(data["game"]["id"])).move(data)

@bottle.post('/end')
def end():
    data = bottle.request.json

    game_ending = active_games.pop(data["game"]["id"])

    return game_ending.end(data)