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python数字、字符串对齐

Python 输出

2023-03-02 11:11:02 时间

\#!/usr/bin/python

data1=5

data2=10  
str1 ='iot\_history\_%-2d'%data1 + ' ok'  
str2 ='iot\_history\_%-2d'%data2 + ' ok'

print str1

print str2

输出：

iot\_history\_5 ok  
iot\_history\_10 ok

<table style="border-spacing:0px; font-family:Monaco,Menlo,Consolas,'Courier New',monospace; width:614px; color:rgb(51,51,51); border:1px solid rgb(204,204,204)!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:auto!important; position:relative!important; right:auto!important; top:auto!important; vertical-align:baseline!important; min-height:auto!important; font-size:13px!important; margin:0.3em 0px!important; padding:0px!important; background:none rgb(245,245,245)!important"> 
 <tbody style="border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:auto!important; margin:0px!important; padding:0px!important; background:none!important"> 
  <tr style="border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:auto!important; margin:0px!important; padding:0px!important; background:none!important"> 
   <td style="font-family:Monaco,Menlo,Consolas,'Courier New',monospace; width:577px; margin:0px!important; padding:0px!important; border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; min-height:auto!important; font-size:13px!important; background:none!important"> 
    <div style="width:1100px; margin:0px auto; border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:relative!important; right:auto!important; top:auto!important; vertical-align:baseline!important; min-height:auto!important; padding:0px!important; background:none!important"> 
     <div style="border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:auto!important; margin:0px!important; padding:0px 1em!important; background:none!important"> 
      <code style="font-family:Monaco,Menlo,Consolas,'Courier New',monospace; border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:auto!important; margin:0px!important; padding:0px!important; color:rgb(0,0,255)!important; background:none!important">'%*d'</code> 
      <code style="font-family:Monaco,Menlo,Consolas,'Courier New',monospace; border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-weight:700!important; min-height:auto!important; margin:0px!important; padding:0px!important; color:rgb(255,120,0)!important; background:none!important">%</code> 
      <code style="font-family:Monaco,Menlo,Consolas,'Courier New',monospace; border:0px!important; bottom:auto!important; float:none!important; left:auto!important; line-height:1.1em!important; outline:0px!important; overflow:visible!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; min-height:auto!important; margin:0px!important; padding:0px!important; color:rgb(0,0,0)!important; background:none!important">(width,data)</code> 
     </div> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>

上面的 \* 对应 width，d 对应 data，输出的 data 占 width 个字符长度

或者直接

这样就是表明占4位，在%后面加一个 - 就是左对齐，位数可以通过len([max][]())获得

字符串对齐：

word="hello"

print word.center(20)  \#居中输出，总共20个字符，word左右两侧各输出5个空格  
print word.center(20,"\*")\#居中输出，总共20个字符，word左右两侧各输出5个"\*"号  
print word.ljust(0)\#左对齐输出  
print word.rjust(20) \#右对齐输出，总共20个字符，word占10个字符，因此左侧填充一个空格再输出word  
print "%20s"%word \#类似于word.rjust(30

[max]: https://www.baidu.com/s?wd=max&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1Y4nWRznAuWnWTLP1msrjTs0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6K1TL0qnfK1TL0z5HD0IgF_5y9YIZ0lQzqlpA-bmyt8mh7GuZR8mvqVQL7dugPYpyq8Q1m3P1bvPWDLPWf3njDdrH63P0

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