是否可以打印 poloniex 错误消息？

Question

我尝试使用 Poloniex 模块将加密货币从我的 Poloniex 钱包提取到 python 中的外部钱包，该模块与以下代码配合得很好：

from poloniex import Poloniex
from poloniex import PoloniexCommandException

polo = Poloniex("my_api_key", "my_api_secret")

try: 
    r = polo.withdraw(currency = "LTC", amount = "0.5", address = "MH...W5")

except PoloniexCommandException:
    print("doesn't work")

else:
    print("successful")
    print(r["response"])

如果在提款过程中没有错误，一切都很好。如果出现错误（我没有足够的余额或地址错误），它将按预期打印doesn't work。 如果我打印r，我会得到以下错误：

Traceback (most recent call last):
  File "c:\Users\phil\Desktop\Python\poloniextest.py", line 12, in <module>
    r = polo.withdraw(currency = "LTC", amount = "0.5", address = "MH...W5")
  File "C:\Users\phils\AppData\Local\Programs\Python\Python39\lib\site-packages\poloniex\poloniex.py", line 300, in withdraw
    return self._private('withdraw', currency=currency, amount=amount,
  File "C:\Users\phil\AppData\Local\Programs\Python\Python39\lib\site-packages\poloniex\poloniex.py", line 50, in _fn
    raise PoloniexCommandException(respdata['error'])
poloniex.exceptions.PoloniexCommandException: Not enough LTC.

现在我想从错误中打印这条消息：Not enough LTC.

是否可以打印此消息？

Answer 1

如果将异常保存在变量中，则可以轻松打印错误消息：

except PoloniexCommandException as e:
    print(e)