笨辦法學python第六天，python第六天

笨辦法學python第六天，python第六天
練習21

# --coding:utf-8--def add(a,b):    print "ADDING %d + %d" %(a,b)    return a+bdef substract(a,b):    print "SUBTRACTING %d - %d" %(a,b)    return a - bdef multiply(a,b):    print "MULTIPLYING %d * %d" %(a,b)    return a * bdef divide(a,b):    print "DIVIDING %d / %d" %(a,b)    return a/bprint "Let's do some math with just functions!"age = add(30,5)height = substract(78,4)weight = multiply(90,2)iq = divide(100,2)print "Age:%d,Height:%d,Weight:%d,IQ:%d" %(age,height,weight,iq)# A puzzle for the extra credit,type it in anyway.print "Here is a puzzle."what = add(age,substract(height,multiply(weight,divide(iq,2))))print "That becomes:",what,"Can you do it by hand?"

練習24

# --coding:utf-8--print "Let's practice everything." #普通的列印print 'You\'d need to know \'bout escapes with \\ that do \nnewlines and \t tabs.' #使用逸出字元\的列印poem = """\tThe lovely worldwith logic so firmly plantedcannot discern \ the needs of lovenor comprehend passion from intuitionand requires an explanation\n\t\twhere there is none."""                 #使用三引號進行文本處理print "------------------------"print poem  #列印變數print "------------------------"five = 10 - 2 + 3 - 6print "This should be five:%s" %five    #列印運算式def secret_formula(stared):     #定義一個函數，進行計算和列印操作    jelly_beans = stared * 500    jars = jelly_beans / 1000    crates = jars / 100    return jelly_beans,jars,cratesstart_point = 10000beans,jars,crates = secret_formula(start_point)print "With a starting point of : %d" % start_pointprint "We'd have %d beans,%d jars,and %d crates." %(beans,jars,crates)start_point /= 10print "We can also do that this way:"print "We'd have %d beans,%d jars,and %d crates." %secret_formula(start_point)

練習25

def break_words(stuff):    words = stuff.split(' ')    return wordsdef sort_words(words):    return sorted(words)def print_first_word(words):    word = words.pop(0)    print worddef print_last_word(words):    word = words.pop(-1)    print worddef sort_sentence(sentence):    words = break_words(sentence)    return sort_words(words)def print_first_and_last(sentence):    words = break_words(sentence)    print_first_word(words)    print_last_word(words)def print_first_and_last_sorted(sentence):    words = sort_sentence(sentence)    print_first_word(words)    print_last_word(words)

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