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  1. Prepare
  2. Python
  3. Errors and Exceptions
  4. Incorrect Regex
  5. Discussions

Incorrect Regex

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302 Discussions

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  • rejin_gunasekar1
     + 0 comments
    #In Python 3, it will not work; but it will work in Pypy 3
import re 
T =int(input())
for x in range(T):
    S = input()
    try:
        if re.compile(S):
            print("True")
    except:
        print("False")

  • kunalkawate424
     + 0 comments

    This is my code for this problem , i used Pypy 3 instead of Python 3. Below is my code

    import sys
import re

lista = []
for line in sys.stdin:
    if(line != ''):
        lista.append(line.rstrip())

for i in range(int(lista[0])):
    try:
        re.compile(lista[i+1])
        is_valid = True
        print('True')
    except re.error:
        is_valid = False
        print('False')

  • air_mvp_jordan
     + 0 comments
    # works in Pypy 3 but not in Python3
import re

n = int(input())

for x in range(n):
    s = input()
    try:
        re.compile(s)
        print("True")
    except re.error:
        print("False")

  • n4m774r_d
     + 0 comments

    Use pypy3

    import re
def check_reg(p):
    try:
        re.compile(p).match("")
        print("True")
    except:
        print("False")

  • ErmaBianco
     + 0 comments

    This seems like a problem related to validating regular expressions. To solve this, you can use Python's re module, which provides the re.compile() method that can test whether a string is a valid regex pattern or not. Lucky7 exchange