Question

我这里有一个程序可以根据价格来分析市场价格和执行订单，然而，每隔一段时间（几个小时左右）它就会抛出这个错误：

Exception in thread Thread-1:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 810, in __bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/threading.py", line 763, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/Users/mattduhon/trading4.py", line 30, in trade
    execution.execute_order(event)
  File "/Users/mattduhon/execution.py", line 34, in execute_order
    response = self.conn.getresponse().read()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 1073, in getresponse
    response.begin()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 415, in begin
    version, status, reason = self._read_status()
  File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/httplib.py", line 379, in _read_status
    raise BadStatusLine(line)
BadStatusLine: ''

一旦发生此错误，程序将继续运行而不执行订单，它只是简化流量。我的问题是如何确保程序继续交易？通过重新启动程序或忽略错误或其他？提前谢谢。

附加代码：

excecution.py

import httplib
import urllib


class Execution(object):
    def __init__(self, domain, access_token, account_id):
        self.domain = domain
        self.access_token = access_token
        self.account_id = account_id
        self.conn = self.obtain_connection()

    def obtain_connection(self):
        return httplib.HTTPSConnection(self.domain)

    def execute_order(self, event):
        headers = {
            "Content-Type": "application/x-www-form-urlencoded",
            "Authorization": "Bearer " + self.access_token
        }
        params = urllib.urlencode({
            "instrument" : event.instrument,
            "units" : event.units,
            "type" : event.order_type,
            "side" : event.side,
            "stopLoss" : event.stopLoss,
            "takeProfit" : event.takeProfit

        })
        self.conn.request(
            "POST",
            "/v1/accounts/%s/orders" % str(self.account_id),
            params, headers
        )
        response = self.conn.getresponse().read()  #Line34////////////
        print response

还有Trading4.py

import Queue
import threading
import time
import json


from execution import Execution
from settings4 import STREAM_DOMAIN, API_DOMAIN, ACCESS_TOKEN, ACCOUNT_ID
from strategy4 import TestRandomStrategy
from streaming import StreamingForexPrices



#Checks for events and executes order                
def trade(events, strategy, execution):

    while True:

        try:
            event = events.get(False)
        except Queue.Empty:
            pass

        else:
            if event is not None:
                if event.type == 'TICK':
                    strategy.calculate_signals(event)
                elif event.type == 'ORDER':
                    print 
                    execution.execute_order(event)  #Line30//////////////


if __name__ == "__main__":
    heartbeat = 0  # Half a second between polling
    events = Queue.Queue()

# Trade 1 unit of EUR/USD
    instrument = "EUR_USD"
    units = 10

    prices = StreamingForexPrices(
        STREAM_DOMAIN, ACCESS_TOKEN, ACCOUNT_ID,
        instrument, events
    )
    execution = Execution(API_DOMAIN, ACCESS_TOKEN, ACCOUNT_ID)

    strategy = TestRandomStrategy(instrument, units, events)


#Threads
    trade_thread = threading.Thread(target=trade, args=(events, strategy, execution))
    price_thread = threading.Thread(target=prices.stream_to_queue, args=[])
    # stop_thread = threading.Thread(target=rates, args=(events,))      

# Start both threads
    trade_thread.start()
    price_thread.start()
    # stop_thread.start()

Answer 1

抓住异常：

        from httplib import BadStatusLine

       ............

        try:
            response = self.conn.getresponse().read()  #Line34////////////
        except BadStatusLine as e:
            print(e)
        else:          
            print response

BadStatusLine错误后重启Python脚本

1 个答案: