Python 我收到Poloniex购买请求的HTTP错误422

我正在使用上述脚本中的python包装器

import urllib
import urllib2
import json
import time
import hmac,hashlib

def createTimeStamp(datestr, format="%Y-%m-%d %H:%M:%S"):
    return time.mktime(time.strptime(datestr, format))

class poloniex:
    def __init__(self, APIKey, Secret):
        self.APIKey = APIKey
        self.Secret = Secret

    def post_process(self, before):
        after = before

        # Add timestamps if there isnt one but is a datetime
        if('return' in after):
            if(isinstance(after['return'], list)):
                for x in xrange(0, len(after['return'])):
                    if(isinstance(after['return'][x], dict)):
                        if('datetime' in after['return'][x] and 'timestamp' not in after['return'][x]):
                            after['return'][x]['timestamp'] = float(createTimeStamp(after['return'][x]['datetime']))

        return after

    def api_query(self, command, req={}):

        if(command == "returnTicker" or command == "return24Volume"):
            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/public?command=' + command))
            return json.loads(ret.read())
        elif(command == "returnOrderBook"):
            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/public?command=' + command + '&currencyPair=' + str(req['currencyPair'])))
            return json.loads(ret.read())
        elif(command == "returnMarketTradeHistory"):
            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/public?command=' + "returnTradeHistory" + '&currencyPair=' + str(req['currencyPair'])))
            return json.loads(ret.read())
        else:
            req['command'] = command
            req['nonce'] = int(time.time()*1000)
            post_data = urllib.urlencode(req)

            sign = hmac.new(self.Secret, post_data, hashlib.sha512).hexdigest()
            headers = {
                'Sign': sign,
                'Key': self.APIKey
            }

            ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/tradingApi', post_data, headers))
            jsonRet = json.loads(ret.read())
            return self.post_process(jsonRet)


    def returnTicker(self):
        return self.api_query("returnTicker")

    def return24Volume(self):
        return self.api_query("return24Volume")

    def returnOrderBook (self, currencyPair):
        return self.api_query("returnOrderBook", {'currencyPair': currencyPair})

    def returnMarketTradeHistory (self, currencyPair):
        return self.api_query("returnMarketTradeHistory", {'currencyPair': currencyPair})


    # Returns all of your balances.
    # Outputs:
    # {"BTC":"0.59098578","LTC":"3.31117268", ... }
    def returnBalances(self):
        return self.api_query('returnBalances')

    # Returns your open orders for a given market, specified by the "currencyPair" POST parameter, e.g. "BTC_XCP"
    # Inputs:
    # currencyPair  The currency pair e.g. "BTC_XCP"
    # Outputs:
    # orderNumber   The order number
    # type          sell or buy
    # rate          Price the order is selling or buying at
    # Amount        Quantity of order
    # total         Total value of order (price * quantity)
    def returnOpenOrders(self,currencyPair):
        return self.api_query('returnOpenOrders',{"currencyPair":currencyPair})


    # Returns your trade history for a given market, specified by the "currencyPair" POST parameter
    # Inputs:
    # currencyPair  The currency pair e.g. "BTC_XCP"
    # Outputs:
    # date          Date in the form: "2014-02-19 03:44:59"
    # rate          Price the order is selling or buying at
    # amount        Quantity of order
    # total         Total value of order (price * quantity)
    # type          sell or buy
    def returnTradeHistory(self,currencyPair):
        return self.api_query('returnTradeHistory',{"currencyPair":currencyPair})

    # Places a buy order in a given market. Required POST parameters are "currencyPair", "rate", and "amount". If successful, the method will return the order number.
    # Inputs:
    # currencyPair  The curreny pair
    # rate          price the order is buying at
    # amount        Amount of coins to buy
    # Outputs:
    # orderNumber   The order number
    def buy(self,currencyPair,rate,amount):
        return self.api_query('buy',{"currencyPair":currencyPair,"rate":rate,"amount":amount})

    # Places a sell order in a given market. Required POST parameters are "currencyPair", "rate", and "amount". If successful, the method will return the order number.
    # Inputs:
    # currencyPair  The curreny pair
    # rate          price the order is selling at
    # amount        Amount of coins to sell
    # Outputs:
    # orderNumber   The order number
    def sell(self,currencyPair,rate,amount):
        return self.api_query('sell',{"currencyPair":currencyPair,"rate":rate,"amount":amount})

    # Cancels an order you have placed in a given market. Required POST parameters are "currencyPair" and "orderNumber".
    # Inputs:
    # currencyPair  The curreny pair
    # orderNumber   The order number to cancel
    # Outputs:
    # succes        1 or 0
    def cancel(self,currencyPair,orderNumber):
        return self.api_query('cancelOrder',{"currencyPair":currencyPair,"orderNumber":orderNumber})

    # Immediately places a withdrawal for a given currency, with no email confirmation. In order to use this method, the withdrawal privilege must be enabled for your API key. Required POST parameters are "currency", "amount", and "address". Sample output: {"response":"Withdrew 2398 NXT."}
    # Inputs:
    # currency      The currency to withdraw
    # amount        The amount of this coin to withdraw
    # address       The withdrawal address
    # Outputs:
    # response      Text containing message about the withdrawal
    def withdraw(self, currency, amount, address):
        return self.api_query('withdraw',{"currency":currency, "amount":amount, "address":address})
trader_obj=poloniex('apikey','secretkey')
print trader_obj.buy("BTC_XRP",0.00016900,50)

文档中给出了脚本（如果来自该脚本）。
我正在尝试下购买订单，但收到urllib2.HTTPError:HTTP Error 422:
我无法解决这个问题，我相信buy参数中存在一些语义错误。

---

我找不到任何与此相关的文档。

首次导入请求库

import requests

然后替换：

ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/tradingApi', post_data, headers))
jsonRet = json.loads(ret.read())

作者：

---

有关类似问题，请参见post

首次导入请求库

import requests

然后替换：

ret = urllib2.urlopen(urllib2.Request('https://poloniex.com/tradingApi', post_data, headers))
jsonRet = json.loads(ret.read())

作者：

---

类似的问题请参见帖子

我在使用旧的/existence API/SECRET时遇到了相同的问题。尝试删除当前API密钥并创建新的API密钥。然后它应该可以工作。

我在使用旧的/existence API/SECRET时遇到了同样的问题。尝试删除当前API密钥并创建新的API密钥。然后它就应该可以工作了。

我打电话从Poloniex拿到未结订单时，偶尔会收到422的回执。 看看Fiddler，这就是问题所在：

Nonce必须大于1517395651712761

---

我的应用程序是多线程的，因此不同线程上的另一个请求必须“击败”Poloniex，即使它是在之后创建的（具有更大的nonce）

我打电话向Poloniex索取未结订单时，偶尔会收到422。 看看Fiddler，这就是问题所在：

Nonce必须大于1517395651712761

我的应用程序是多线程的，因此不同线程上的另一个请求必须“击败”Poloniex，即使它是在之后创建的（具有更大的nonce）

替换：

req['nonce']=int（time.time（）*1000）

作者：

req['nonce']=int（time.time（）*100000000）

替换：

req['nonce']=int（time.time（）*1000）

作者：

---

req['nonce']=int（time.time（）*100000000）

这对我来说很有效！出于某种原因，我只收到了“buy”命令的错误422，而没有收到其他命令（如“returnCompleteBalances”）。这对我很有用！出于某种原因，我只收到了“buy”命令的错误422，而没有收到其他命令（如“returnCompleteBalances”）。