Python--习题 5:更多的变量和打印（初学笔记）

学习环境：

Python 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 18:41:36) [MSC v.1900 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>>

原代码内容：

my_name = 'Zed A. Shaw' my_age = 35 # not a lie my_height = 74 # inches my_weight = 180 # lbs my_eyes = 'Blue' my_teeth = 'White' my_hair = 'Brown' print "Let's talk about %s." % my_name print "He's %d inches tall." % my_height print "He's %d pounds heavy." % my_weight print "Actually that's not too heavy." print "He's got %s eyes and %s hair." % (my_eyes, my_hair) print "His teeth are usually %s depending on the coffee." % my_teeth # this line is tricky, try to get it exactly right print "If I add %d, %d, and %d I get %d." % ( my_age, my_height, my_weight, my_age + my_height + my_weight)

执行报错：

D:\Mystuff>python ex8-0.py   File "ex8-0.py", line 9     print "Let's talk about %s." % my_name                                              ^ SyntaxError: Missing parentheses in call to 'print'

 

修改及结果如下：

my_name = 'Zed A. Shaw' my_age = 35 # not a lie my_height = 74 # inches my_weight = 180 # lbs my_eyes = 'Blue' my_teeth = 'White' my_hair = 'Brown' #print ("Let's talk about %s.") % my_name #错误书写 #Let's talk about %s. #Traceback (most recent call last): # File "ex8.py", line 17, in <module> # print ("Let's talk about %s.") % my_name #TypeError: unsupported operand type(s) for %: 'NoneType' and 'str' print ("Let's talk about %s." % my_name ) #正确书写 #Let's talk about Zed A. Shaw. print ("He's %d inches tall." % my_height) #He's 74 inches tall. print ("He's %d pounds heavy." % my_weight) #He's 180 pounds heavy. print ("Actually that's not too heavy.") #Actually that's not too heavy. #print ("He's got %s eyes and %s hair.") % (my_eyes, my_hair) #错误书写 #报错同上18-22行 print ("He's got %s eyes and %s hair." % (my_eyes, my_hair)) #正确书写 #He's got Blue eyes and Brown hair. print ("His teeth are usually %s depending on the coffee." % my_teeth) #His teeth are usually White depending on the coffee. #This line is tricky, try to get it exactly right #print ("If I add %d, %d, and %d I get %d.") % (my_age, my_height, my_weight, my_age + my_height + my_weight) #错误书写 #报错同上18-22行 print ("If I add %d, %d, and %d I get %d." % (my_age, my_height, my_weight, my_age + my_height + my_weight)) #If I add 35, 74, and 180 I get 289.

加分习题

#修改所有变量名称，把前面的“my_” 去掉 #使用变量将英寸和磅转换成厘米和千克，使用Python的计算功能来完成 name = 'Zed A. Shaw' age = 35 # not a lie height = 74 # inches transfer_height = 2.54 * height # cm weight = 180 # lbs transfer_weight = 0.45359237 * weight # kg eyes = 'Blue' teeth = 'White' hair = 'Brown' print ("Let's talk about %s." % name ) print ("He's %d inches tall." % height) print ("He's %d inches tall, %d cm." %(height, transfer_height)) #He's 74 inches tall, 187 cm. print ("He's %d pounds heavy." % weight) print ("He's %d pounds heavy, %d kg." %(weight, transfer_weight)) #He's 180 pounds heavy, 81 kg. print ("Actually that's not too heavy.") print ("He's got %s eyes and %s hair." % (eyes, hair)) print ("His teeth are usually %s depending on the coffee." % teeth) #This line is tricky, try to get it exactly right print ("If I add %d, %d, and %d I get %d." % (age, height, weight, age + height + weight))