Weird functional python

weird.py

from toolz import *
from toolz.curried import *                                                                                                                                                               
import string


lines = open('./gt.txt').readlines()
imgs = pipe(
    lines,
    map(lambda l: l.split('\t')[0]),
    list
)

labels = pipe(
    lines,
    map(lambda l: l.strip().lower().split('\t')[1]),
    map(lambda s: s.replace(chr(8203), '')),
    list
)

filtered = pipe(
    zip(imgs, labels),
    filter(lambda x: all(map(lambda c: c not in string.ascii_lowercase, x[1] ))),
    list
)

with open('./_gt.txt', 'w') as f:
    for img, label in filtered:
        f.write(f'{img}\t{label}\n')