AttributeError: 'NoneType' object has no attribute 'replace'
Question: right sorry that I'm not all good at python but my problem is that i need to
replace a character  
here is the thing i am trying to change all i need to change is # to an A for
all of the lines

    
    
    def puzzle():
    print ("#+/084&;")
    print ("#3*#%#+")
    print ("8%203:")
    print (",1$&")
    print ("!-*%")
    print (".#7&33&")
    print ("#*#71%")
    print ("&-&641'2")
    print ("#))85")
    print ("9&330*;")
    

so here is what i attempted to do(it was in another py file)

    
    
    from original_puzzle import puzzle
    
    puzzle()
    
    result = puzzle()
    
    question = input("first letter ")
    
    for letter in question:
        if letter == "a":
            result = result.replace("#","A")
            print (result)
    

here is what it gives me

    
    
     Traceback (most recent call last):
      File "N:\AQA 4512;1-practical programming\code\game.py", line 36, in <module>
        result = result.replace("#","A")
    AttributeError: 'NoneType' object has no attribute 'replace'
    

it would help if somebody told me a different way around it aswell thanks for
the help and sorry again that i'm bad at python


Answer: if you don't explicitly return something from a python function, python
returns None.

    
    
    >>> def puzzle():
    ...   print 'hi'
    ... 
    >>>
    >>> puzzle() is None
    hi
    True
    >>> def puzzle():
    ...   print 'hi'
    ...   return None
    ... 
    >>> puzzle() is None
    hi
    True
    >>> def puzzle():
    ...   return 'hi'
    ... 
    >>> puzzle()        
    'hi'
    >>> puzzle() is None
    False
    >>> 
    

