Source code:

def upper(String):
    count1 = 0
    for i in string:
        if (i.isupper()):
            count1 = count1 + 1
    return count1


def lower(String):
    count1 = 0
    for i in string:
        if (i.islower()):
            count1 = count1 + 1
    return count1

def digit(String):
    count1 = 0
    for i in string:
        if (i.isdigit()):
            count1 = count1 + 1
    return count1

def whitespace(String):
    count1 = 0
    for i in string:
        if (i==" "):
            count1 = count1 + 1
    return count1

def backWord(String):
    for i in range(len(string)-1,-1,-1):
        print(string[i],end="")

string=input("Enter string:")
print("no.of uppercase letters are :",upper(string))
print("no.of lowercase letters are :",lower(string))
print("no.of digits are :",digit(string))
print("no.of whitespaces are :",whitespace(string))
print("Reverse order of string : ",end="")
backWord(string)