Incorrect Regex 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 – Incorrect Regex in Python – HackerRank Solution

Incorrect Regex in Python – HackerRank Solution

Problem:

You are given a string .
Your task is to find out whether  is a valid regex or not.

Input Format

The first line contains integer , the number of test cases.
The next  lines contains the string .

Constraints

Output Format

Print “True” or “False” for each test case without quotes.

Sample Input

2
.*\+
.*+

Sample Output

True
False

Explanation

.*\+ : Valid regex.
.*+: Has the error multiple repeat. Hence, it is invalid.

Incorrect Regex in Python – HackerRank Solution

import re;

N = int(input())
for _ in range(N):
    try:
        re.compile(input())
        Output = True
    except re.error:
        Output = False
    
    print(Output)