unacceptable

'''
Elegant hourglass pattern generator.
'''

import itertools

def hourglass(n: int, char: str = "*") -> str:
    '''
    Generate an hourglass pattern.

unacceptable

from functools import lru_cache

@lru_cache(maxsize=None)
def fibonacci(n: int) -> int:
    '''
    Return the n-th Fibonacci number.
    '''
    if n == 0:
        return 0

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#!/usr/bin/env bash
set -e

git diff | git apply --whitespace=fix
git diff --cached | git apply --cached --whitespace=fix

unacceptable

def pi(n_terms: int) -> float:
    '''
    Approximate pi using the Leibniz formula
    '''
    series = [
      (-1)**k / (2*k + 1) for k in range(n_terms)
    ]

    pi_approx = 4*(
        sum(series)

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#!/usr/bin/env python3
'''
Generate a graph of the real returns of the S&P 500
'''

import logging

import yfinance as yf
import pandas as pd
import requests

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# macos
ssh-keygen -t rsa -b 4096 -E SHA512 -m PEM -f ~/my.jwt.RS512.pem

# pip install pyjwt
python <<PYTHON
import os
import logging

import jwt

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#!/usr/bin/env python
'''
Calculate AWS Fargate pricing
'''
import argparse
import logging

logging.basicConfig(
    level=logging.INFO,
    format='%(asctime)s %(levelname)s %(message)s'

unacceptable

#!/usr/bin/env python
'''
Convert an image to ASCII art
'''
import argparse
from PIL import Image

# pylint: disable=redefined-outer-name
def main(args):
    '''

unacceptable

#!/usr/bin/env python
'''
           .. ::
          .:.:=;.
          .: ;;;.   .
          ...=:;:..:?:.:.
          .;;=;=====;;*=.
      ..::;;;========;?=.
      .;;;;;;=======;==;.
      .:;;;;;;==**==?SSZ;

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#!/usr/bin/env bash
set -e

watch_dns(){
    HOST=$1
    DNS_SERVER=${2:-"8.8.8.8"}

    OLD_IP="$(dig +short "$HOST")"

    echo "$(date) Starting to watch $HOST for changes from \"$OLD_IP\" as tracked by ${DNS_SERVER}"