Python：嵌套while循环在for循环中意外中断而没有任何错误

Question

我有一个嵌套在 for 循环中的 while 循环，该循环在从 firestore 收集的 json 数组上运行，该数组收集股票代码以传递给另一个 api，以收集每分钟的交易数据以放回 firestore 数据库。

当我运行循环时，它会在通过 389 entry while 循环的第四次或第六次（永远不会更多）时意外停止而没有任何错误。

知道这是为什么吗？我的代码有什么问题吗？我注意到如果我将 while 循环中的限制从 389 更改为 100，它对 json 数组中的所有公司都有效。但如果它是完整的 389 个条目，它不会通过列表中的四家公司。

无论如何，谢谢你的帮助！

import requests
import json
import firebase_admin
from firebase_admin import credentials
from firebase_admin import firestore
import datetime

cred = credentials.Certificate("./serviceAccountKey.json")
firebase_admin.initialize_app(cred)

db = firestore.client()

doc_ref1 = db.collection(u'Quiver').stream()

for doc in doc_ref1:

    symbol = doc.id

    api_url = "https://api.iextrading.com/1.0/stock/{}/chart/1d".format(symbol)

    query_url = api_url

    r = requests.get(query_url)

    if r.status_code != 200: 
        print("Error:", r.status_code)
        continue

    if r.status_code == 404: 
        print("Error:", r.status_code, symbol)
        continue

    json_stock = r.json()

    b = 0

    while b <= 100:
        try:
            date = json_stock[b]['date']

            minute = json_stock[b]['minute']

            label = json_stock[b]['label']

            high = json_stock[b]['high']

            low = json_stock[b]['low']

            average = json_stock[b]['average']

            volume = json_stock[b]['volume']

            notional = json_stock[b]['notional']

            numberOfTrades = json_stock[b]['numberOfTrades']

            marketHigh = json_stock[b]['marketHigh']

            marketLow = json_stock[b]['marketLow']

            marketAverage = json_stock[b]['marketAverage']

            marketVolume = json_stock[b]['marketVolume']

            marketNotional = json_stock[b]['marketNotional']

            marketNumberOfTrades = json_stock[b]['marketNumberOfTrades']

            open = json_stock[b]['open']

            close = json_stock[b]['close']

            marketOpen = json_stock[b]['marketOpen']

            marketClose = json_stock[b]['marketClose']

            changeOverTime = json_stock[b]['changeOverTime']

            marketChangeOverTime = json_stock[b]['marketChangeOverTime']

            doc_ref = db.collection(u'dailies').document(u'{}-{}'.format(minute, symbol))

            doc_ref.set({
                u'date':u'{}'.format(date),
                u'minute':u'{}'.format(minute),
                u'label':u'{}'.format(label),
                u'high':u'{}'.format(high),
                u'average':u'{}'.format(average),
                u'notional':u'{}'.format(notional),
                u'number of trades':u'{}'.format(numberOfTrades),
                u'market high':u'{}'.format(marketHigh),
                u'market low':u'{}'.format(marketLow),
                u'market average':u'{}'.format(marketAverage),
                u'market volume':u'{}'.format(marketVolume),
                u'market notional':u'{}'.format(marketNotional),
                u'market number of trades':u'{}'.format(marketNumberOfTrades),
                u'open':u'{}'.format(open),
                u'close':u'{}'.format(close),
                u'market open':u'{}'.format(marketOpen),
                u'market close':u'{}'.format(marketClose),
                u'change over time':u'{}'.format(changeOverTime),
                u'market change over time':u'{}'.format(marketChangeOverTime)
            })

            print("{} {}:  {}".format(symbol, minute, b))

            b += 1

        except IndexError:
            print("Index Error")
            break

Answer 1

你可以使用：

except Exception as errmsg:
        print(errmsg)

并提供更多信息