Python NoneType object is not callable beginner

Question

It tells me line 1 and line 5  new to debugging programming  not sure if that helps   def hi        print  hi     def loop f  n      f repeats n times     if n  lt   0          return     else          f           loop f  n-1     gt  gt  gt  loop hi    5  hi f   TypeError   NoneType  object is not callable   Why does it give me this error

User · Accepted Answer

You want to pass the function object hi to your loop   function  not the result of a call to hi    which is None since hi   doesn t return anything    So try this    gt  gt  gt  loop hi  5  hi hi hi hi hi   Perhaps this will help you understand better    gt  gt  gt  print hi   hi None  gt  gt  gt  print hi  lt function hi at 0x0000000002422648 gt

User · Answer

You should not pass the call function hi   to the loop   function  This will give the result    def hi           print  hi    def loop f  n            f repeats n times   if n lt  0      return   else      f                    loop f  n-1       loop hi  5               Do not use hi   function inside loop   function

User · Answer

Why does it give me that error    Because your first parameter you pass to the loop function is None but your function is expecting an callable object  which None object isn t    Therefore you have to pass the callable-object which is in your case the hi function object   def hi           print  hi   def loop f  n            f repeats n times   if n lt  0      return   else      f                    loop f  n-1       loop hi  5

User · Answer

I faced the error  TypeError   NoneType  object is not callable   but for a different issue  With the above clues  i was able to debug and got it right  The issue that i faced was   I had the custome Library written and my file wasnt recognizing it although i had mentioned it  example   Library                    libraries customlibraries ExtendedWaitKeywords py the keywords from my custom library were recognized and that error  was resolved only after specifying the complete path  as it was not getting the callable function

[python] Python NoneType object is not callable (beginner)

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