题目中给出的代码如下：
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)
#后面少一个分号。
"""Prints the first word after popping it off."""
word = words.poop(0)
print word def print_last_word(words):
"""Prints the last word after popping it off."""
word = words.pop(-1
#上面少了半个括号
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
#这里\应该为/，在一般情况下\代表转移。
crates = jars / 100
return jelly_beans, jars, crates start_point = 10000
beans, jars, crates == secret_formula(start-point)
#这里面函数变量写错了，应该为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_pont
#这一样少了一个括号。 sentence = "All god\tthings come to those who weight." words = ex25.break_words(sentence)
sorted_words = ex25.sort_words(words)
#本练习中没引进ex25，所有有两种修改方法import ex25，我选用的是去掉ex25.
print_first_word(words) print_last_word(words) .print_first_word(sorted_words)
#本行多了一个.
print_last_word(sorted_words)
sorted_words = ex25.sort_sentence(sentence)
#本练习中没引进ex25，所有有两种修改方法import ex25，我选用的是去掉ex25.
prin sorted_words
#上面的关键字print错误
print_irst_and_last(sentence) print_first_a_last_sorted(senence)
#上面一行缩进存在问题
修正后
#!/usr/bin/env python
# -*- coding:utf-8 -*- def break_words(stuff):
"""This function will break up words for us."""
b_words = stuff.split(' ')
return b_words def sort_words(s_words):
"""Sorts the words."""
return sorted(s_words) def print_first_word(pf_words):
"""Prints the first word after popping it off."""
pf_word = pf_words.pop(0)
print pf_word def print_last_word(pl_words):
"""Prints the last word after popping it off."""
pl_word = pl_words.pop(-1)
print pl_word def sort_sentence(in_sentence):
"""Takes in a full sentence and returns the sorted words."""
out_words = break_words(in_sentence)
return sort_words(out_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(pf_sentence):
"""Sorts the words then prints the first and last one."""
pf_words = sort_sentence(pf_sentence)
print_first_word(pf_words)
print_last_word(pf_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(d_started):
d_jelly_beans = d_started * 500
d_jars = d_jelly_beans / 1000
d_crates = d_jars / 100
return d_jelly_beans, d_jars, d_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 /= 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 = break_words(sentence)
sorted_words = sort_words(words) print_first_word(words)
print_last_word(words)
print_first_word(sorted_words)
print_last_word(sorted_words)
sorted_words = sort_sentence(sentence)
print sorted_words print_first_and_last(sentence) print_first_and_last_sorted(sentence)