python httplib不可用类型错误

Question

我正在尝试使用httplib从Oanda获取一个乐器列表，但是行中有一个错误（不可用的类型）：rawData = conn.getresponse（）。read（），我没有＆＃39;我知道如何解决这个问题。有人可以帮帮我吗？

def getInsturmentList（）：     #GET / v1 / instruments

try:
    conn = httplib.HTTPSConnection("api-fxpractice.oanda.com")
    url = ''.join(["/v1/instruments"])
    headers = {'Authorization' : 'Bearer ' + access_token,
                       # 'X-Accept-Datetime-Format' : 'unix'
                      }
    conn.request("GET", url, headers)
except Exception,e:
    print e
#candles = json.loads(conn.getresponse().read())['candles']
rawData = conn.getresponse().read()
jData = json.loads(rawData)
print jData


Error message:
  File "G:/TAAM/Oanda/Oanda_RESTAPI.py", line 187, in getInsturmentList
    rawData = conn.getresponse().read()
  File "C:\Python27\lib\httplib.py", line 1132, in getresponse
    response.begin()
  File "C:\Python27\lib\httplib.py", line 453, in begin
    version, status, reason = self._read_status()
  File "C:\Python27\lib\httplib.py", line 417, in _read_status
    raise BadStatusLine(line)
httplib.BadStatusLine: 

＆＃39;