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Martin Hope
mezun
Asked: 2020-07-28 03:23:16 +0000 UTC
  • -2

此代码应显示 Steam 库存中的项目及其成本

import time

import requests

wear_list = ['Factory New', 'Minimal Wear', 'Field-Tested', 'Well-Worn', 'Battle-Scarred']
INVENTORY_URL = 'http://steamcommunity.com/profiles/{}/inventory/json/730/2'
MARKET_URL = 'http://steamcommunity.com/market/priceoverview/'

def get_inventory(steamid):
    r = requests.get(INVENTORY_URL.format(steamid))
    return r.json()['rgDescriptions']

def extract_information(descriptions):
    for _, item in descriptions.items():
        tags = {i['category']: i for i in item['tags']}
        name = tags['market_name']
        yield {
            'name': name[name.find('|')+1:name.find('(')].strip(),
            'market_name': name,
            'market_hash_name': item['market_hash_name'],
            'wear': tags['Exterior']['name'],
            'gun': tags['Weapon']['name'],
            'stattrak': 'StatTrak' in tags['Quality']['name'],
            'marketable': item['marketable'],
        }

def get_prices(items):
    for item in items:
        if not item['marketable']:
            continue
        if item['wear'] not in wear_list:
            continue
            
        r = requests.get(
            MARKET_URL,
            params={
                'appid': '730',
                'currency': '2',
                'market_hash_name': item['market_hash_name']
            }
        )
        json_data = r.json()
        try:
            price = json_data['lowest_price']
        except KeyError:
            price = json_data['median_price']

        item['price'] = price[-4:]
        time.sleep(5)
        yield item

if __name__ == '__main__':
    inventory = get_inventory('76561198996231585')
    item_information = extract_information(inventory)
    items = get_prices(item_information)
    for item in items:
        print('{name}: {price}'.format(**item))

错误

Traceback (most recent call last):
  File "steam_price_item.py", line 59, in <module>
    for item in items:
  File "steam_price_item.py", line 31, in get_prices
    for item in items:
  File "steam_price_item.py", line 19, in extract_information
    market_name = tags['name'],
KeyError: 'name'
python