pybites

import os

filename = 'homework.txt'

if not os.path.exists(filename):
    with open(filename, 'w'): pass

answer1 = """1).
            X  | 3  | X
           ____|____|____

pybites

>>> from datetime import datetime
>>> def today(dt=datetime.now()):
...     print(dt)
...
>>> today()
2020-12-12 22:18:26.432268
# oops
>>> today()
2020-12-12 22:18:26.432268
>>> today()

pybites

#!/usr/bin/env python3.9
import argparse
import importlib
import inspect
import pydoc


def get_callable(arg):
    module_str, name = arg.rsplit(".", 1)
    module = importlib.import_module(module_str)

pybites

# from Fluent Python 2nd ed

class Averager():

    def __init__(self):
        self.series = []

    def __call__(self, new_value):
        self.series.append(new_value)
        total = sum(self.series)

pybites

# cars.py
from datetime import date


class Car:

    def __init__(self, model, year):
        self.model = model
        self.year = year
        self._mileage = []

pybites

import concurrent.futures
import os
import re
from timeit import timeit

import requests
from tqdm import tqdm

URLS = 'urls'

pybites

import concurrent.futures
import os
import re
from timeit import timeit

import requests

URLS = 'urls'

pybites

import os
import re

import pyperclip


def gen_affiliation_link(url):
    if not re.search(r"amazon.*/dp/", url):
        raise ValueError(f"{url} is not a valid Amazon product link")
    asin = re.sub(r".*/dp/([^/]+).*", r"\1", url)

pybites

import os

# make venv and pip install selenium
from selenium import webdriver
from selenium.webdriver.common.keys import Keys

# set your codechalleng.es username and password in venv/bin/activate, then source it
user = os.getenv('PB_USER')
password = os.getenv('PB_PW')

pybites

{"achievementPoints": 14565,
 "battlegroup": "Cyclone",
 "calcClass": "V",
 "class": 9,
 "faction": 0,
 "gender": 0,
 "lastModified": 1519011260000,
 "level": 110,
 "mounts": {"collected": [{"creatureId": 32158,
                           "icon": "ability_mount_drake_blue",