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in Python: •Flip case: Write a program to do the following: •Accept the input of a...

in Python:

•Flip case: Write a program to do the following:

•Accept the input of a sentence from the user that contains lowercase, uppercase, and special characters.

•Make a new sentence in which the lowercase characters are changed to uppercase and the uppercase are changed to lower case.   All other characters will retain their original value.

Print the original sentence and the new sentence.

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Answer #1 
s = input("Enter sentence: ")
res = ""
for x in s:
    if(x.islower()):
        res += x.upper()
    elif(x.isupper()):
        res += x.lower()
    else:
        res += x
s = res
print(s)
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