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Python Incorrect Regex HackerRank Solution

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

Input Format

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

Constraints

0 < T < 100

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.

Solution:

import re
n = int(input())
for i in range(0,n):  
    try:
        input_ = input()
        a = (re.compile(input_))
        print(bool(a))
    except re.error:
        print('False')

Steps used in solving the problem -

Step 1: First we imported re.
Step 2: then, we have taken the input of n.
Step 3: After this, we created a for loop in the range of 0 to (n).
Step 4: Inside for loop, we used the try method and took input.
Step 5: then, we used re.compile method with our input.
Step 6: After this, we printed our answer as a boolean.
Step 7: at last we used the expect method to handle exceptions i.e if any exception occurs it will print ("False").

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Python Incorrect Regex HackerRank Solution

Input Format

Constraints

Output Format

Sample Input

Sample Output

Explanation

Solution:

Steps used in solving the problem -

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