Learn Python the Hard Way

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 *** params.",
	"class %%%(object):\n\tdef ***(self, @@@)":
	  "class %%% has-a function *** that takes self and @@@ params.",
	"*** = %%%()":
	  "Set *** to an instance of class %%%.",
	"***.***(@@@)":
	  "From *** get the *** function, call it with params 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(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("***"))
	English = []
	param_names = []

	for i in range(0, snippet.count("@@@")):
		param_count = random.randint(1,3)
		#if param_names == []:
		#	word = random.sample(WORDS, param_count)
		#	param_names.append(f'{word}')
		#else:
		#	param_names.append(', '.join(
		#		random.sample(WORDS, param_count)))
		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)
		snippet = snippet.replace("%%%", word, 1)

	# fake other names
	for word in other_names:
		result = result.replace("***", word, 1)
		snippet = snippet.replace("***", word, 1)
	# fake parameter lists
	for word in param_names:
		result = result.replace("@@@", word, 1)
		snippet = snippet.replace("@@@", word, 1)
	English.append(result)
	#English = English[2:len(English)-2]
	#param_names.append(param_name)

	return English[0], snippet

# keep going until they hit CTRL-D

try:
	while True:
		snippets = list(PHRASES.keys())
		random.shuffle(snippets)
		
		for snippet in snippets:
			phrase = PHRASES[snippet]
			# phrase in line below before = was originally answer
			phrase_out, snippet_out = convert(snippet, phrase)
			
			def getMultiLineInput():
				guess = ""
				while True:
					try:
						line = input()
					except KeyboardInterrupt:
						break
					if guess != "":
						guess += '\n' + line
					else:
						guess += line
				return guess

			if PHRASE_FIRST:
				print(f"The following phrase is how to read out a Python code snippet:\n{phrase_out}")

				print("Enter exactly the corresponding code, then press enter and then press CTRL-C:")
				
				guess = getMultiLineInput()

				if guess == snippet_out:
					print("Correct, you entered it exactly right!\n\n")
				else:
					print(f"That's not exactly correct. You entered:\n{guess}\nThe corresponding code is:\n{snippet_out}\n\n")
			else:
				print(f"Here is some Python code:\n{snippet_out}")
				
				print("Enter exactly how you would read it out, then press enter and then press CTRL-C:")
				
				guess = getMultiLineInput()

				if guess == phrase_out:
					print("Correct, you entered it exactly right!\n\n")
				else:
					print(f"That's not exactly correct. Here is how you would read it out:\n{phrase_out}\n\n")
except EOFError:
	print("\nBye")