from pathlib import Path
from collections import Counter
import json, statistics as stats

chunks = lambda it, n: [it[i:i + n] for i in range(0, len(it), n)]

flatten = lambda lst: [x for sub in lst for x in sub]

unique = lambda seq: list(dict.fromkeys(seq))

sliding = lambda it, n: [it[i:i + n] for i in range(len(it) - n + 1)]

freqs = lambda seq: Counter(seq)

read_text = lambda p: Path(p).read_text(encoding="utf-8")

write_text = lambda p, text: Path(p).write_text(text, encoding="utf-8")

read_json = lambda p: json.loads(Path(p).read_text(encoding="utf-8"))

write_json = lambda p, obj: Path(p).write_text(json.dumps(obj, ensure_ascii=False, indent=2), encoding="utf-8")

mean_std = lambda xs: (stats.mean(xs), stats.pstdev(xs))

funcs = []

for i in range(5):
    funcs.append(lambda x=i: x)  # фиксируем i как значение по умолчанию

print([f() for f in funcs])  # [0, 1, 2, 3, 4]