oop_test.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 *** parameters.",
	"class %%%(object):\n\tdef ***(self, @@@)":
	  "clasee %%% has-a function name *** that takes self and @@@ parameters.",
	"*** = %%%()":
	  "Set *** to an instance of class %%%.",
	"***.***(@@@)":
	  "From *** get the *** function, and call it with parameters self, @@@.",
	"***.***":
	  "From *** get the *** attribute and set it to '***'."
}

# do they want to drill phrases first
if len(sys.argv) == 2 and sys.argv[1] == "english":
	PHRASE_FIRST = True
else:
	PHRASE_FIRST = False
	
# load up the words from the website
for word in urlopen(WORD_URL).readlines():
	WORDS.append(word.strip())
	
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[:]
		
		# fake class names
		for word in class_names:
			result = result.replace("%%%", word, 1)
			
		# fake other names
		for word in other_names:
			result = result.replace("***", word, 1)

		# fake parameter lists
		for word in param_names:
			result = result.replace("@@@", word, 1)
			
		results.append(result)
		
	return results
	
# keep going until they hit CTRL-D
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("> ")
			print ("Answer: %s\n\n" % answer)
except EOFError:
	print("\nBye")