python程序改错题_python 笨方法 例题26 正确代码

import ex25

def break_words(stuff):

"""This function will break up words for us."""

words = stuff.split(' ')

return words

def sort_words(words):

"""Sorts the words."""

return sorted(words)

def print_first_word(words):

"""Prints the first word after popping it off."""

word = words.pop(0)

print word

def print_last_word(words):

"""Prints the last word after popping it off."""

word = words.pop(-1)

print word

def sort_sentence(sentence):

"""Takes in a full sentence and returns 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):

"""Sorts the words then prints the first and last one."""

words = sort_sentence(sentence)

print_first_word(words)

print_last_word(words)

print "Let's practice everything."

print 'You\'d need to know \'bout escapes with \\ that do \n newlines and \t tabs.'

poem = """

\tThe lovely world

with logic so firmly planted

cannot discern \n the needs of love

nor comprehend passion from intuition

and requires an explantion

\n\t\twhere there is none.

"""

print "--------------"

print poem

print "--------------"

five = 10 - 2 + 3 - 5

print "This should be five: %s" % five

def secret_formula(started):

jelly_beans = started * 500

jars = jelly_beans / 1000

crates = jars / 100

return jelly_beans, jars, crates

start_point = 10000

beans, jars, crates = secret_formula(start_point)

print "With a starting point of: %d" % start_point

print "We'd have %d jeans, %d jars, and %d crates." % (beans, jars, crates)

start_point = start_point / 10

print "We can also do that this way:"

print "We'd have %d beans, %d jars, and %d crabapples."%secret_formula(start_point)

sentence = "All god\tthings come to those who weight."

words = ex25.break_words(sentence)

sorted_words = ex25.sort_words(words)

print_first_word(words)

print_last_word(words)

print_first_word(sorted_words)

print_last_word(sorted_words)

sorted_words = ex25.sort_sentence(sentence)

print sorted_words

print_first_and_last(sentence)

print_first_and_last_sorted(sentence)