(PYTHON 3) having trouble with this question. Prompt the user to enter a string

Question

(PYTHON 3) having trouble with this question.

Prompt the user to enter a string of their choosing. Output the string. Complete the get_num_of_characters() function, which returns the number of characters in the user's string. We encourage you to use a for loop in this function. Extend the program by calling the get_num_of_characters() function and then output the returned result. Extend the program further by implementing the output_without_whitespace() function. output_without_whitespace() outputs the string's characters except for whitespace (spaces, tabs).

Explanation / Answer

def get_num_of_characters(inputStr):
   sm =0
   for ch in inputStr:
       sm+=1
   return sm
def output_without_whitespace(inputStr):
   s = ""
   for ch in inputStr:
       if ch!=' ':
           s = s+ch
   return s
if __name__=='__main__':
   s= raw_input("Enter a sentence or phrase: ")
   print("You entered: "+s)
   print("Number of characters: "+str(get_num_of_characters(s)))
   print("String with no whitespace: "+output_without_whitespace(s))

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