习题41

#!/usr/bin/python
# -*- coding: utf-8 -*-
Import random
from urllib import urlopen
Import sys

for word in urlopen(WORLD_URL).readlines( ):
    WORDS.append( word.strip( ) )

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

#do they want to drill phrases first
PHRASE_FIRST = False
if len(sys.argv) == 2 and sys.argv[1] == 'english':
    PHRASE_FIRST = True
    
# load up the words from the website
for word in urlopen(WORD_URL).readlines():
    WORD.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 param_names
        for word in class_names:
            result = result.replace('%%%',word,1)
            
        # fake other class_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 = PHRASES.keys()
        random.shuffle(snippets)
        
        for snippet in snippets:
            phrase = PHRASES[snippet]
            question,answer = convert(snippet,phrase)
            if PHRASES_FIRST:
                question,answer = answer,question
                
            print(question)
            
            input('>')
            print('answer:  %s\n\n'%answer)
except EOFError:
    print('\nBye')