以下就原代码(有错误的已经加粗显示)
1 def break_words(stuff): 2 """This function will break up words for us.""" 3 words = stuff.split(‘ ‘) 4 return words 5 6 def sort_words(words): 7 """Sorts the words.""" 8 return sorted(words) 9 10 def print_first_word(words) 11 """Prints the first word after popping it off.""" 12 word = words.poop(0) 13 print word 14 15 def print_last_word(words): 16 """Prints the last word after popping it off.""" 17 word = words.pop(-1 18 print word 19 20 def sort_sentence(sentence): 21 """Takes in a full sentence and returns the sorted words.""" 22 words = break_words(sentence) 23 return sort_words(words) 24 25 def print_first_and_last(sentence): 26 """Prints the first and last words of the sentence.""" 27 words = break_words(sentence) 28 print_first_word(words) 29 print_last_word(words) 30 31 def print_first_and_last_sorted(sentence): 32 """Sorts the words then prints the first and last one.""" 33 words = sort_sentence(sentence) 34 print_first_word(words) 35 print_last_word(words) 36 37 38 print "Let‘s practice everything." 39 print ‘You\‘d need to know \‘bout escapes with \\ that do \n newlines and \t tabs.‘ 40 41 poem = """ 42 \tThe lovely world 43 with logic so firmly planted 44 cannot discern \n the needs of love 45 nor comprehend passion from intuition 46 and requires an explantion 47 \n\t\twhere there is none. 48 """ 49 50 51 print "--------------" 52 print poem 53 print "--------------" 54 55 five = 10 - 2 + 3 - 5 56 print "This should be five: %s" % five 57 58 def secret_formula(started): 59 jelly_beans = started * 500 60 jars = jelly_beans \ 1000 61 crates = jars / 100 62 return jelly_beans, jars, crates 63 64 65 start_point = 10000 66 beans, jars, crates == secret_formula(start-point) 67 68 print "With a starting point of: %d" % start_point 69 print "We‘d have %d jeans, %d jars, and %d crates." % (beans, jars, crates) 70 71 start_point = start_point / 10 72 73 print "We can also do that this way:" 74 print "We‘d have %d beans, %d jars, and %d crabapples." % secret_formula(start_pont 75 76 77 sentence = "All god\tthings come to those who weight." 78 79 words = ex25.break_words(sentence) 80 sorted_words = ex25.sort_words(words) 81 82 print_first_word(words) 83 print_last_word(words) 84 .print_first_word(sorted_words) 85 print_last_word(sorted_words) 86 sorted_words = ex25.sort_sentence(sentence) 87 prin sorted_words 88 89 print_irst_and_last(sentence) 90 91 print_first_a_last_sorted(senence)
总结:本章不难,只要认真打字跟分析过EX24,25两章基本没问题。都是一些语法错误,漏打,错打以及KEYWORD打错等问题。
值得留意:行79开始ex25.要去掉,因为sentence在行77已经有加入,无需像EX25一样要用import赋值
正确源代码:
1 def break_words(stuff): 2 """This function will break up words for us.""" 3 words = stuff.split(‘ ‘) 4 return words 5 6 def sort_words(words): 7 """Sorts the words.""" 8 return sorted(words) 9 10 def print_first_word(words): 11 """Prints the first word after popping it off.""" 12 word = words.pop(0) 13 print word 14 15 def print_last_word(words): 16 """Prints the last word after popping it off.""" 17 word = words.pop(-1) 18 print word 19 20 def sort_sentence(sentence): 21 """Takes in a full sentence and returns the sorted words.""" 22 words = break_words(sentence) 23 return sort_words(words) 24 25 def print_first_and_last(sentence): 26 """Prints the first and last words of the sentence.""" 27 words = break_words(sentence) 28 print_first_word(words) 29 print_last_word(words) 30 31 def print_first_and_last_sorted(sentence): 32 """Sorts the words then prints the first and last one.""" 33 words = sort_sentence(sentence) 34 print_first_word(words) 35 print_last_word(words) 36 37 38 print "Let‘s practice everything." 39 print ‘You\‘d need to know \‘bout escapes with \\ that do \nnewlines and \ttabs.‘ 40 41 poem = """ 42 \tThe lovely world 43 with logic so firmly planted 44 cannot discern \nthe needs of love 45 nor comprehend passion from intuition 46 and requires an explantion 47 \n\t\twhere there is none. 48 """ 49 50 51 print "--------------" 52 print poem 53 print "--------------" 54 55 five = 10 - 2 + 3 - 5 56 print "This should be five: %s" % five 57 58 def secret_formula(started): 59 jelly_beans = started * 500 60 jars = jelly_beans / 1000 61 crates = jars / 100 62 return jelly_beans, jars, crates 63 64 65 start_point = 10000 66 beans, jars, crates = secret_formula(start_point) 67 68 print "With a starting point of: %d" % (start_point) 69 print "We‘d have %d jeans, %d jars, and %d crates." % (beans, jars, crates) 70 71 start_pointed = start_point / 10 72 73 print "We can also do that this way:" 74 print "We‘d have %d beans, %d jars, and %d crabapples." % secret_formula(start_pointed) 75 76 sentence = "All god things come to those who weight." 77 78 words = break_words(sentence) 79 sorted_words = sort_words(words) 80 81 print_first_word(words) 82 print_last_word(words) 83 print_first_word(sorted_words) 84 print_last_word(sorted_words) 85 sorted_words = sort_sentence(sentence) 86 print sorted_words 87 88 print_first_and_last(sentence) 89 print_first_and_last_sorted(sentence)
运行结果:
原文:http://www.cnblogs.com/LevenLau/p/6359842.html