Python基础教程——3使用字符串

#字符串格式化示例
#使用给定的宽度打印格式化后的价格表

width = input ('Please enter ')

price_width = 10
item_width = width - price_width

head_format = '%-*s%*s'
format      = '%-*s%*.2f'

print '=' * width
print head_format % (item_width,'Item',price_width,'Price')
print '-' * width

print format % (item_width,'Apples',price_width,0.4)
print format % (item_width,'Pears',price_width,0.5)
print format % (item_width,'Cantaloupes',price_width,1.92)#哈密瓜
print '=' * width

>>>
Please enter 35
===================================
Item                          Price
-----------------------------------
Apples                         0.40
Pears                          0.50
Cantaloupes                    1.92
===================================