Python 基础练习

一些python代码网站：

bitbucket.org

launchpad.net

freecode.com

def break_words(stuff):    """This function will break up words for us."""    words = stuff.split(' ')    return wordsdef sort_words(words):    """Sort the words"""    return sorted(words)def print_first_word(words):    """Print the the first word after popping it off."""    word = words.pop(0)    print worddef print_last_word(words):    """Print the last word after popping it off."""    word = words.pop(-1)    print worddef sort_sentence(sentence):    """Takes in the full sentence and return the sorted words."""    words = break_words(sentence)    return sort_words(words)def print_first_and_last(sentence):    """Prints the first and last words of the sentence."""    words = break_words(sentence)    print_first_word(words)    print_last_word(words)def print_first_and_last_sorted(sentence):    """Sorted the words then prints the first and last one."""    words = sort_sentence(sentence)    print_first_word(words)    print_last_word(words)

import ex25
>>> sentence = "All good things come to those who wait."
>>> words = ex25.break_words(sentence)
>>> words
['All', 'good', 'things', 'come', 'to', 'those', 'who', 'wait.']
>>> sorted_words = ex25.sorted_words(words)


Traceback (most recent call last):
  File "<pyshell#5>", line 1, in <module>
    sorted_words = ex25.sorted_words(words)
AttributeError: 'module' object has no attribute 'sorted_words'
>>> sorted_words = ex25.sort_words(words)
>>> sorted_words
['All', 'come', 'good', 'things', 'those', 'to', 'wait.', 'who']