String Validators in Python | HackerRank Programming Solutions | HackerRank Python Solutions

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Introduction To Python

Python is a widely-used, interpreted, object-oriented, and high-level programming language with dynamic semantics, used for general-purpose programming. It was created by Guido van Rossum, and first released on February 20, 1991.

Python is a computer programming language often used to build websites and software, automate tasks, and conduct data analysis. It is also used to create various machine learning algorithm, and helps in Artificial Intelligence. Python is a general purpose language, meaning it can be used to create a variety of different programs and isn’t specialized for any specific problems. This versatility, along with its beginner-friendliness, has made it one of the most-used programming languages today. A survey conducted by industry analyst firm RedMonk found that it was the most popular programming language among developers in 2020.

Link for the Problem – String Validators in Python – HackerRank Solution

String Validators in Python – HackerRank Solution

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

Input Format

A single line containing a string .

Constraints

Output Format

In the first line, print True if  has any alphanumeric characters. Otherwise, print False.
In the second line, print True if  has any alphabetical characters. Otherwise, print False.
In the third line, print True if  has any digits. Otherwise, print False.
In the fourth line, print True if  has any lowercase characters. Otherwise, print False.
In the fifth line, print True if  has any uppercase characters. Otherwise, print False.

Sample Input

qA2

Sample Output

True
True
True
True
True

String Validators in Python – HackerRank Solution

def fun1(s):
    for i in range(len(s)):
        if(s[i].isalnum()):
            return True;
            break;
    return False;
        
def fun2(s):
    for i in range(len(s)):
        if(s[i].isalpha()):
            return True;
            break;
    return False;

def fun3(s):
    for i in range(len(s)):
        if(s[i].isdigit()):
            return True;
            break;
    return False;

def fun4(s):
    for i in range(len(s)):
        if(s[i].islower()):
            return True;
            break;
    return False; 
     
def fun5(s):
    for i in range(len(s)):
        if(s[i].isupper()):
            return True;
            break;
    return False;
 
# String Validators in Python - HackerRank Solution END 
    
if __name__ == '__main__':
    s = raw_input()
    
    # String Validators in Python - HackerRank Solution START
    flagalphanum = fun1(s)
    alphabetical = fun2(s)
    digits = fun3(s)
    lowercase = fun4(s)
    uppercase = fun5(s)
    print(flagalphanum)
    print(alphabetical)
    print(digits)
    print(lowercase)
    print(uppercase)