我刚开始学习python和firebase。我想在firebase中为一个节点设置一个监听器。节点在
中https://database.firebaseio.com/NSN
所以我正在阅读本教程
https://github.com/firebase/EventSource-Examples/blob/master/python/chat.py
根据上面的教程我想出了这段代码
URL ="https://database.firebaseio.com/Missing NSN.json"
class ClosableSSEClient(SSEClient):
"""
Hack in some closing functionality on top of the SSEClient
"""
def __init__(self, *args, **kwargs):
self.should_connect = True
super(ClosableSSEClient, self).__init__(*args, **kwargs)
def _connect(self):
if self.should_connect:
super(ClosableSSEClient, self)._connect()
else:
raise StopIteration()
def close(self):
self.should_connect = False
self.retry = 0
# HACK: dig through the sseclient library to the requests library down to the underlying socket.
# then close that to raise an exception to get out of streaming. I should probably file an issue w/ the
# requests library to make this easier
self.resp.raw._fp.fp._sock.shutdown(socket.SHUT_RDWR)
self.resp.raw._fp.fp._sock.close()
self.sse = ClosableSSEClient(URL)
for msg in self.sse:
msg_data = json.loads(msg.data)
if msg_data is None: # keep-alives
continue
path = msg_data['path']
data = msg_data['data']
if path == '/':
# initial update
if data:
keys = data.keys()
keys.sort()
print(keys)
for k in keys:
self.message_queue.put(data[k])
else:
self.message_queue.put(data)
当我运行此脚本时，我收到此错误
>> Traceback (most recent call last):
File "NSNListener.py", line 96, in <module>
self.sse = ClosableSSEClient(URL)
File "NSNListener.py", line 78, in __init__
super(ClosableSSEClient, self).__init__(*args, **kwargs)
TypeError: __init__() missing 2 required positional arguments: 'session' and 'build_headers'
TypeError: __init__() missing 2 required positional arguments: 'session' and 'build_headers'
我该如何解决这个问题？