《笨办法学python第三版》习题26,原错误代码及正确代码
2015-11-21 13:36
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#import ex25 1 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) # 加上":" """Prints the first word after popping it off.""" word = words.poop(0) #pop(0) print word def print_last_word(words): """Prints the last word after popping it off.""" word = words.pop(-1 #加上“)” 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 #除法是“/” crates = jars / 100 return jelly_beans, jars, crates start_point = 10000 beans, jars, crates == secret_formula(start-point) # jelly_beans = 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 # start_point) sentence = "All god\tthings come to those who weight." #good things words = ex25.break_words(sentence) sorted_words = ex25.sort_words(words) print_first_word(words) print_last_word(words) .print_first_word(sorted_words) # 去掉print前面的 . print_last_word(sorted_words) sorted_words = ex25.sort_sentence(sentence) prin sorted_words # print print_irst_and_last(sentence) # print print_first_and_last print_first_a_last_sorted(senence) #indent print first_a_last_sorted(sentence)
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 - 6 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 jelly_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." % (jelly_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 things 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 print_first_and_last(sentence) print print_first_and_last_sorted(sentence)
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