Python 3.4 DeprecationWarning convert_charrefs

问题

Using UnitTest in the shell:

python3.4 -m unittest my_test.py -v

I get the DeprecationWarning

DeprecationWarning: The value of convert_charrefs will become True in 3.5. You are encouraged to set the value explicitly.  super().__init__() ERROR

So it seems

super().__init__()

triggers this DeprecationWarning. But I can not find anything about convert_charrefs warning. Also the used statement is used in the Python documentation, and multiple examples in SO.

What causes this warning, and how can I solve this? Thanks.

回答1:

convert_charrefs correspond to HTMLParser. If you inherit from this class you must explicitly specify convert_charrefs:

class Foo(HTMLParser): 
  def __init__(self): 
    super().__init__(convert_charrefs=True)

来源：https://stackoverflow.com/questions/48203228/python-3-4-deprecationwarning-convert-charrefs