1.字段宽度和精度
>>>'%.*s' % (10,'Gruido')
' Guido'
>>>'%.-*s' % (10,'Gruido')
'Guido '
详见例子
width = input('Please enter ')
price_width=10
item_width=width-price_width
header_format='%-*s%*s'
format ='%-*s%*.2f'
print '=' * width
print header_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)
print format %(item_width,'Dried Apricots(16 oz.)',price_width,8)
print format %(item_width,'Prunes(4 1bs.)',price_width,12)
输出结果：
Please enter width：35
===================================
Item Price
-------------------------------------------------------
Apples 0.4
... ...
... ...
... ...
... ...
... ...
===================================