ex41.py

import random
from urllib.request import urlopen
import sys

WORD_URL = "http://learncodethehardway.org/words.txt"
WORDS =[]

PHRASES = {
	"class %%%(%%%)": "Make a class named %%% that is-a %%%.",
	"class %%%(object):\n\tdef __init__(self,***)": "class %%% has-a __init__ that takes self and *** params.",
	"class %%%(object):\n\tdef ***(self, @@@)": "class %%% has-a function *** that takes self and @@@ params.",
	"*** = %%%()": "Set *** to an instance of %%%.",
	"***.***(@@@)": "From *** get the *** function and call it with params self and @@@.",
	"***.*** = '****'": "From *** get the *** attribute and set it to '***'."
}

if len(sys.argv) == 2 and sys.argv[1] == "english":
	PHRASE_FIRST = True
else:
	PHRASE_FIRST = False

for word in urlopen(WORD_URL).readlines():
	WORDS.append(str(word.strip(), encoding = 'utf-8'))

def convert(snippet, phrase):
	class_names =[w.capitalize() for w in random.sample(WORDS, snippet.count("%%%"))]
	other_names = random.sample(WORDS, snippet.count("***"))
	results =[]
	param_names = []

	for i in range(0, snippet.count("@@@")):
		param_count = random.randint(1, 3)
		param_names.append(', '.join(random.sample(WORDS, param_count)))

	for sentence in snippet, phrase:
		result = sentence[:]

		for word in class_names:
			result = result.replace("%%%", word, 1)

		for word in other_names:
			result = result.replace("***", word, 1)

		for word in param_names:
			result = result.replace("@@@", word, 1)

		results.append(result)

	return results

try:
	while True:
		snippets = list(PHRASES.keys())
		random.shuffle(snippets)

		for snippet in snippets:
			phrase = PHRASES[snippet]
			question, answer = convert(snippet, phrase)
			if PHRASE_FIRST:
				question, answer = answer, question

		print(question)
		input(">\t")
		print(f"ANSWER: {answer}\n\n")
except EOFError:
	print("\nBye")