actions = [
    ("Alice", "picked"),
    ("Bob", "looked"),
    ("Charlie", "picked"),
    ("Bob", "dropped"),
    ("Alice", "dropped"),
    ("Charlie", "ate")
]

results = []

def process_file(path):
    for line in open(path):
        if "error" in line:
            results.append(line.strip())

# где-то в другом месте:
process_file("logs1.txt")
process_file("logs2.txt")

print(f"Total errors: {len(results)}")

Total errors: 0

def process_file(path, results):
    for line in open(path):
        if "error" in line:
            results.append(line.strip())

results = []
process_file("logs1.txt", results)
process_file("logs2.txt", results)

results = []

def process_file(path):
    global results
    for line in open(path):
        if "error" in line:
            results.append(line.strip())

# Запуск без root-доступа
docker run --user 1000:1000 my-image

# Только для чтения
docker run --read-only my-image

# Удалить все cap-привилегии ядра
docker run --cap-drop=ALL my-image

# Использовать seccomp-профиль
docker run --security-opt seccomp=default.json my-image

# Отключить сеть
docker run --network=none my-image

def mystery(x, y):
    if x == 0:
        return y
    else:
        return mystery(x - 1, x + y)

result = mystery(3, 2)
print(result)

# script.py

def main():
    import argparse
    import time

    parser = argparse.ArgumentParser()
    parser.add_argument("--sleep", type=int, default=1)
    args = parser.parse_args()

    print("Start sleeping...")
    time.sleep(args.sleep)
    print("Done.")

if __name__ == "__main__":
    main()

def magic():
    return [lambda: i for i in range(5)]

funcs = magic()
results = [f() for f in funcs]
print(results)

[0, 1, 2, 3, 4]

[4, 4, 4, 4, 4]

def magic():
    return [lambda i=i: i for i in range(5)]

funcs = magic()
results = [f() for f in funcs]
print(results)

[0, 1, 2, 3, 4]

from functools import partial

def f(x): return x
funcs = [partial(f, i) for i in range(5)]
results = [f() for f in funcs]
print(results)

from functools import lru_cache

@lru_cache(maxsize=128)
def fib(n):
    if n < 2:
        return n
    return fib(n - 1) + fib(n - 2)

print(fib(100))