Python中回调函数中的返回值
Python中回调函数中的返回值
提问于 2022-07-21 06:13:31
我有以下代码：
from time import sleep
from pybit import spot
ws_spot = spot.WebSocket(
test=True,
ping_interval=30, # the default is 30
ping_timeout=10, # the default is 10
domain="bybit" # the default is "bybit"
)
def handle_message(msg):
print(msg)
ws_spot.depth_v2_stream(
handle_message, "ETHUSDT"
)
while True:
sleep(1)我想修改函数"handle_message“，以便它可以返回值。我试过了
from time import sleep
from pybit import spot
ws_spot = spot.WebSocket(
test=True,
ping_interval=30, # the default is 30
ping_timeout=10, # the default is 10
domain="bybit" # the default is "bybit"
)
def handle_message(msg):
return msg
x = handle_message(msg)
ws_spot.depth_v2_stream(
handle_message, "ETHUSDT"
)
while True:
print(x)但是，由于没有定义"msg“，所以它不起作用。我可以知道在这种情况下如何返回值吗？谢谢。
Stack Overflow用户
发布于 2022-07-21 06:18:39
我不知道您的代码到底在尝试什么，但您需要这样做：
from time import sleep
from pybit import spot
ws_spot = spot.WebSocket(
test=True,
ping_interval=30, # the default is 30
ping_timeout=10, # the default is 10
domain="bybit" # the default is "bybit"
)
savedmsg = None
def handle_message(msg):
global savedmsg
savedmsg = msg
print(msg)
ws_spot.depth_v2_stream(
handle_message, "ETHUSDT"
)
while not savedmsg:
sleep(1)
print(savedmsg)页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/73061475
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