python格式化输出

格式化输出浮点数(float)

import math

#default

print"PI = %f"%math.pi

#width = 10,precise = 3,align = left

print"PI = %10.3f"%math.pi

#width = 10,precise = 3,align = rigth

print"PI = %-10.3f"%math.pi

#前面填充字符

print"PI = %06d"%int(math.pi)

#输出结果

#PI = 3.141593

#PI = 3.142

#PI = 3.142

#PI = 000003

#浮点数的格式化，精度、度和

格式化输出字符串(string)

#precise = 3

print"%.3s "%("jcodeer")

#precise = 4print"%.*s"%(4,"jcodeer")

#width = 10,precise = 3print"%10.3s"%("jcodeer")

#输出结果：#jco#jcod# jco