reversing the string

REVERSE STRING.py

# GET YOUR LINE PRINTED BACKWARDS
print("Enter the string you want to print backward")
str1 = input()
print("String entered by you as follows\n", str1)
print("String entered by you in upper case as follows\n", str1.upper())
print("String entered by you in lower as follows\n", str1.lower())
x = int(len(str1))
print("Length of the string: ", x)
i = x
print(type(i))
revstr = ""
while i > 0:

    i -= 1
    revstr += str1[i]

print(revstr)