[SOLVED] How to use regex to extract a set of particular substrings?

How to use regex to extract a set of particular substrings?

I want to extract all possible substrings which have all the vowels from a string. For example in the code:

import re
text = "thisisabeautifulsequencofwords"
pattern = r"(?=.*a)(?=.*e)(?=.*i)(?=.*o)(?=.*u)[ \w]*?"
match = re.findall(pattern, text, re.DOTALL)
print(match)

I want to get the following outputs:

['thisisabeautifulsequenco','thisisabeautifulsequencof','sisabeautifulsequenco'....]

How to do that?

Solution

The code below can help you with your problem using Regix re in Python.

import re

def get_substrings_with_all_vowels_regex(text):
    pattern = r'(?=(.{5,}))'  # Positive lookahead for substrings of length >=5
    matches = []

    # Iterate over all possible starting positions
    for match in re.finditer(pattern, text):
        start = match.start()
        # Try all possible substrings starting from 'start' position
        for end in range(start + 5, len(text) + 1):
            substring = text[start:end]
            if all(vowel in substring for vowel in 'aeiou'):
                matches.append(substring)
         return matches

text = "thisisabeautifulsequencofwords"
result = get_substrings_with_all_vowels_regex(text)
print(result)