[Tutor] for loop question

[Jim]

Hello Friends,
I apologize for being such a bother. This problem has been evading me 
all day. Can you please give me a hint as to why I cannot put the 
variable UpperCaseSentence outside of the for loop?
I can do it in other instances but not in this one.
Thank you so much,
Jim

#Main function.
def main():

     mySentence = (input("Enter text."))

     mySentenceList = mySentence.split('.')



     #Call fixCase function. Send it mySentenceList and receive result
     #and stores result in variable named output.
     output = fixCase(mySentenceList)
     print(output)



def fixCase(myList):
     #Begin making a loop through the list, using a variable myString
     for myString in range (len(myList)):
         tempString = myList[myString] #Store in temporary variable.
         myList[myString] = tempString[0:1].upper() + 
tempString[1:len(tempString)] #Replace with upper
         UpperCaseSentence = (myList[myString])
         print(UpperCaseSentence)


#Call main function
main()

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