Question

尝试运行此代码时，我一直遇到问题。有一些帮助，但仍然没有工作。请帮助：）

完整代码：

exports.unicodeAccent = function(str)
{
var charset = [
    "€",
    "À",
    "Á",
    "Â",
    "Ã",
    "Ä",
    "Å",
    "à",
    "á",
    "â",
    "ã",
    "ä",
    "å",
    "Ò",
    "Ó",
    "Ô",
    "Õ",
    "Õ",
    "Ö",
    "Ø",
    "ò",
    "ó",
    "ô",
    "õ",
    "ö",
    "ø",
    "È",
    "É",
    "Ê",
    "Ë",
    "è",
    "é",
    "ê",
    "ë",
    "ð",
    "Ç",
    "ç",
    "Ð",
    "Ì",
    "Í",
    "Î",
    "Ï",
    "ì",
    "í",
    "î",
    "ï",
    "Ù",
    "Ú",
    "Û",
    "Ü",
    "ù",
    "ú",
    "û",
    "ü",
    "Ñ",
    "ñ",
    "Š",
    "š",
    "Ÿ",
    "ÿ",
    "ý",
    "Ž",
    "ž"
];

for(var i = 0; i < charset.length; i++)
{
    var code        = ("00000000"+(charset[i].charCodeAt(0).toString(16))).slice(-4);
    var unicodeStr  = "\\u"+code;

    var re  = new RegExp(charset[i], "gm");
    str = str.replace(re, unicodeStr);

}

return str;

}

我不断收到这两个错误：

#!/usr/bin/env python3
from __future__ import print_function
try:
    import pymarketcap
    import decimal
    from operator import itemgetter
    import argparse
except Exception as e:
    print('Make sure to install {0} (pip3 install {0}).'.format(str(e).split("'")[1]))
    exit()

# arguments and setup
parser = argparse.ArgumentParser()
parser.add_argument('-m','--minimum_vol',type=float,help='Minimum Percent volume per exchange to have to count',default=1)
parser.add_argument('-p','--pairs',nargs='*',default=[],help='Pairs the coins can be arbitraged with - default=all')
parser.add_argument('-c','--coins_shown',type=int,default=10,help='Number of coins to show')
parser.add_argument('-e','--exchanges',nargs='*',help='Acceptable Exchanges - default=all',default=[])
parser.add_argument('-s','--simple',help='Toggle off errors and settings',default=False,action="store_true")
args = parser.parse_args()
cmc = pymarketcap.Pymarketcap()
info = []
count = 1
lowercase_exchanges = [x.lower() for x in args.exchanges]
all_exchanges = not bool(args.exchanges)
all_trading_pairs = not bool(args.pairs)
coin_format = '{: <25} {: >6}% {: >10} {: >15} {: <10} {: <10} {: <15} {: <5}'

if not args.simple:
    print('CURRENT SETTINGS\n* MINIMUM_PERCENT_VOL:{}\n* TRADING_PAIRS:{}\n* COINS_SHOWN:{}\n* EXCHANGES:{}\n* ALL_TRADING_PAIRS:{}\n* ALL_EXCHANGES:{}\n'.format(args.minimum_vol,args.pairs,args.coins_shown,lowercase_exchanges,all_trading_pairs,all_exchanges))
# retrieve coin data
for coin in cmc.ticker():
    try:
        markets = cmc.markets(coin["id"])
    except Exception as e:
        markets = cmc.markets(coin["symbol"])
    best_price = 0

    best_exchange = ''
    best_pair = ''
    worst_price = 999999
    worst_exchange = ''
    worst_pair = ''
    has_markets = False
    for market in markets:
        trades_into = market["pair"].replace(str(coin["symbol"])," ").replace("-"," ")
        if market['percent_volume'] >= args.minimum_vol and market['updated'] and (trades_into in args.pairs or all_trading_pairs) and (market['exchange'].lower() in lowercase_exchanges or all_exchanges):
            has_markets = True
            if market['price_usd'] >= best_price:
                best_price = market['price_usd']
                best_exchange = market['exchange']
                best_pair = trades_into
            if market['price_usd'] <= worst_price:
                worst_price = market['price_usd']
                worst_exchange = market['exchange']
                worst_pair = trades_into
    if has_markets:
        info.append([coin['name'],round((best_price/worst_price-1)*100,2),worst_price,worst_exchange,worst_pair,best_price,best_exchange,best_pair])
    elif not args.simple:
        print(coin['name'],'had no markets that fit the criteria.')

    print('[{}/100]'.format(count),end='\r')
    count += 1

# show data
info = sorted(info,key=itemgetter(1))[::-1]
print(coin_format.format("COIN","CHANGE","BUY PRICE","BUY AT","BUY WITH","SELL PRICE","SELL AT","SELL WITH"))
for coin in info[0:args.coins_shown]:
    print(coin_format.format(*coin))

非常感谢任何帮助。谢谢在我之前的问题之前得到了一些很好的帮助，但仍然没有解决方案。

非常感谢任何帮助。谢谢你在我之前的问题之前收到了一些很好的帮助，但还没有解决方案。

Answer 1

我认为问题在于，如果对某些硬币没有任何东西可以找到（无论你使用coin["id"]还是coin["symbol"]），这可能是由建立的死链接引起的进入ticker模块（coinmarketcap.com/currencies/）。在这种情况下

markets = cmc.markets(coin["id"])

markets = cmc.markets(coin["symbol"])

将抛出AttributeError。您应该将代码更改为

for coin in cmc.ticker():
    try:
        # this call can fail
        markets = cmc.markets(coin["id"])
    except AttributeError as e:
        try:
            # second call could also fail
            markets = cmc.markets(coin["symbol"])
        except AttributeError as e1:
            print("Nothing found for " + coin["id"])
            continue #skip this coin?
    best_price = 0

我尝试了您的代码，但是对于名为janus的硬币失败了，当您手动尝试链接时，会显示PageNotFound，这可以解释为什么它不起作用

Answer 2

NoneType意味着您实际上获得了None，而不是您认为自己正在使用的任何类或对象的实例。这通常意味着上面的赋值或函数调用失败或返回意外结果。

如需进一步调查，我建议您打印以下表达式的响应及其类型：

for coin in cmc.ticker():
    try:
        markets = cmc.markets(coin["id"])
    except Exception as e:
        markets = cmc.markets(coin["symbol"])
    best_price = 0
print(markets)
print(type(markets))

这不会解决您的问题，但可能会让您深入了解困扰您的代码行。并且您可以进一步调试它以确定您的错误。如果问题仍然存在，您可以编辑您的问题并发布进一步评估的代码/追溯调用，这将帮助我们（社区成员）帮助您解决问题。

通常，python中有数据类型，你无法迭代，可能需要以某种可迭代的方式对其进行类型转换（例如，字典，列表）或使用属性来访问你案例中给定索引的值

希望有所帮助：）

属性错误：'NoneType'对象没有属性'find'

2 个答案: