Python 将整数格式化为定长字符串
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Python format Integer into fixed length strings
提问by vaibhav jain
I want to generate a string based on an intalong with zeros. And the length should always be of 5not more then that nor less.
我想生成一个基于int带零的字符串。并且长度应该始终5不超过也不小于。
For example:
Consider a Integer: 1
Formatted String : 00001
Consider a Integer: 12
Formatted String : 00012
Consider a Integer: 110
Formatted String : 00110
Consider a Integer: 1111
Formatted String : 01111
Consider a Integer: 11111
Formatted String : 11111
采纳答案by Martijn Pieters
Use the format()functionor the str.format()method to format integers with zero-padding:
使用format()函数或str.format()方法用零填充格式化整数：
print format(integervalue, '05d')
print 'Formatted String : {0:05d}'.format(integervalue)
See the Format Specification Mini-Language; the leading 0in the format signifies 0-padding, the 5is the minimal field width; any number shorter than that is padded to the full width.
请参阅格式规范迷你语言；0格式中的前导表示 0-padding，5即最小字段宽度；任何比它短的数字都填充到全宽。
Demo:
演示：
>>> format(110, '05d')
'00110'
>>> 'Formatted String : {0:05d}'.format(12)
'Formatted String : 00012'
