Convert js function with regex to python one

Question

I got a basic function written in js that takes some substring and matches via regex variations of the substring stored in array.

const arr = ['autoencoder', 'auto-encoder', 'auto encoder', 'auto', 'one'];
const arr2 = ['autoencoder', 'one'];

const fn = (s, a) => a.includes(s.replace(/\W/g, ''));

console.log(fn('autoencoder', arr)); 
console.log(fn('auto encoder', arr));
console.log(fn('auto-encoder', arr)); 

console.log(fn('autoencoder', arr2)); 
console.log(fn('auto encoder', arr2)); 
console.log(fn('auto-encoder', arr2));

The problem is that I cannot reproduce it in Python

I tried to reproduce it in this way:  

import re
a = ['autoencoder', 'auto-encoder', 'auto encoder', 'auto', 'one']
b = 'autoencoder'

def t(w, a):
  return [s for s in a if re.match(r'\W\ g', w)]

print(t('autoencoder',a))

But obviously I did not succeed as basically it returns empty list

user459872 · Accepted Answer · 2020-11-04 08:50:08Z

2

Your JavaScript function does the following

const fn = (s, a) => a.includes(s.replace(/\W/g, ''));

Replace all non word characters with empty string s.replace(/\W/g, '')
Then a.includes determines whether the array(a in this case) includes this value, returning true or false

To replicate this in python you can do the following

>>> import re
>>> def fn(s, a):
...     return re.sub(r'\W', '', s) in a # re.sub(r'\W', '', s) replace all non word characters with empty string

edited Nov 4, 2020 at 8:50

answered Nov 4, 2020 at 8:43

user459872

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3 Comments

Ison Over a year ago

a = ['auto-encoder', 'auto encoder', 'auto', 'one'] b = ['autoencoder', 'one'] def fn(s, a): return re.sub(r'\W', '', s) in a print(fn('autoencoder', a)) In such a case the python code will return False, while js will return True

user459872 Over a year ago

@Ison I am getting False in both cases. Would you please make sure that the array(a) is ['auto-encoder', 'auto encoder', 'auto', 'one'] in both python and Javascript

Ison Over a year ago

Hmm, you're right, my fault. Oh God, I was so happy finally dealing with regex to be able match different forms of some string, but no -_-

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