HI,
In problem 7 I get the message: " File "C:\Users\wilkenfe\Desktop\limudim\python\Unit2\le7\ps7\ps7.py", line 154, in update
if not virus.doesClear():
AttributeError: 'NoneType' object has no attribute 'doesClear'".
What does it mean?

Question

HI, 
In problem 7 I get the message: "  File "C:\Users\wilkenfe\Desktop\limudim\python\Unit2\le7\ps7\ps7.py", line 154, in update
    if not virus.doesClear():
AttributeError: 'NoneType' object has no attribute 'doesClear'".
What does it mean?

rsmith6559 · Answer

virus isn't an object, so it can't have a doesClear method.