Incorrect Regex Hacker Rank Solution – Queslers

Problem: Incorrect Regex Hacker Rank Solution

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.

Incorrect Regex Hacker Rank Solution in python 2

import re

for t in xrange(int(input())):
    S = raw_input()
    try:
        re.compile(S)
        print True
    except:
        print False

Incorrect Regex Hacker Rank Solution in python 3

# Enter your code here. Read input from STDIN. Print output to STDOUT
import re
for _ in range(int(input())):
    ans = True
    try:
        reg = re.compile(input())
    except re.error:
        ans = False
    print(ans)

Incorrect Regex Hacker Rank Solution in pypy

# Enter your code here. Read input from STDIN. Print output to STDOUT
import re
for _ in xrange(input()):  
    try:
        print bool(re.compile(raw_input()))
    except:
        print 'False'

Incorrect Regex Hacker Rank Solution in pypy 3

import re
T = int(input())
for _ in range(T):
    try:
        re.compile(input())
        print(True)
    except Exception:
        print(False)
        

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