String Validators in Python - HackerRank Solution

Problem Statement :

Python has built-in string validation methods for basic data. It can check if a string is composed of alphabetical characters, alphanumeric characters, digits, etc.

str.isalnum()

This method checks if all the characters of a string are alphanumeric (a-z, A-Z and 0-9).

>>> print 'ab123'.isalnum()

True

>>> print 'ab123#'.isalnum()

False

str.isalpha()

This method checks if all the characters of a string are alphabetical (a-z and A-Z).

>>> print 'abcD'.isalpha()

True

>>> print 'abcd1'.isalpha()

False

str.isdigit()

This method checks if all the characters of a string are digits (0-9).

>>> print '1234'.isdigit()

True

>>> print '123edsd'.isdigit()

False

str.islower()

This method checks if all the characters of a string are lowercase characters (a-z).

>>> print 'abcd123#'.islower()

True

>>> print 'Abcd123#'.islower()

False

str.isupper()

This method checks if all the characters of a string are uppercase characters (A-Z).

>>> print 'ABCD123#'.isupper()

True

>>> print 'Abcd123#'.isupper()

False

Task:

You are given a string S.

Your task is to find out if the string S contains: alphanumeric characters, alphabetical characters, digits, lowercase and uppercase characters.

Input Format:

A single line containing a string S.

Constraints:

0<len(S)<1000

Output Format:

In the first line, print True if S has any alphanumeric characters. Otherwise, print False.

In the second line, print True if S has any alphabetical characters. Otherwise, print False.

In the third line, print True if S has any digits. Otherwise, print False.

In the fourth line, print True if S has any lowercase characters. Otherwise, print False.

In the fifth line, print True if S has any uppercase characters. Otherwise, print False.

Solution:

def pr(t):
    if t==1:
        print(True)
    else:
        print(False)

if __name__ == '__main__':
    s = input()
    t=0
    for i in s:
        if i.isalnum()==True:
            t=1
            break
    pr(t)

    t=0
    for i in s:
        if i.isalpha()==True:
            t=1
            break
    pr(t)
        
    t=0    
    for i in s:
        if i.isdigit()==True:
            t=1
            break   
    pr(t)  
    
    t=0
    for i in s:
        if i.islower()==True:
            t=1
            break
    pr(t)
    
    t=0
    for i in s:
        if i.isupper()==True:
            t=1
            break
    pr(t)