格式化方法：
%c 格式化字符及其ASCII码
%s 格式化字符串
%d 格式化整数
%u 格式化无符号整型
%o 格式化无符号八进制数
%x 格式化无符号十六进制数
%X 格式化无符号十六进制数（大写）
%f 格式化浮点数字，可指定小数点后的精度
%e 用科学计数法格式化浮点数
%E 作用同%e，用科学计数法格式化浮点数
%g %f和%e的简写
%G %f 和 %E 的简写
%p 用十六进制数格式化变量的地址
print("习题5：更多变量和打印！！！")
my_name = 'jiajie.zheng'
my_age = 27
my_height = 173 #cm
my_weight = 120 #G
my_eyes = 'black'
my_teeth = 'white'
my_hair = 'black'
# %s 表示格式化字符串
print("Let's talk about %s." %my_name)
# %d 表示格式化数字
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))
print("以下为加分题：1、去掉所有的my_")
name = 'jiajie.zheng'
age = 27
height = 173 #cm
weight = 120 #G
eyes = 'black'
teeth = 'white'
hair = 'black'
# %s 表示格式化字符串
print("Let's talk about %s." %name)
# %d 表示格式化数字
print("He's %d inches tall." %height)
print("He's %d pounds heavy."%weight)
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))
print("以下为加分题：2、使用更多的格式化字符，%r:不管什么都打印出来")
name = 'jiajie.zheng'
age = 27
height = 173 #cm
weight = 120 #G
eyes = 'black'
teeth = 'white'
hair = 'black'
# %s 表示格式化字符串
print("Let's talk about %s." %name)
# %d 表示格式化数字
print("He's %r inches tall." %height)
print("He's %r pounds heavy."%weight)
print("Actually that's not too heavy.")
print("He's got %r eyes and %r hair."%(eyes,hair))
print("His teeth are usually %r depending on the coffee." %teeth)
#this line is tricky,try to get it exactly right
print("If I add %r,%r,and %r I get %r." %(age,height,weight,age + height + weight))