List of articles

• Python String alignment method
• • Python ljust() Method
  • Python rjust() Method
  • Python center() Method

Python String alignment method

Python str Provides 3 There are two ways to align text , Namely ljust()、rjust() and center() Method , This section will introduce their usage one by one .

Python ljust() Method

ljust() The function of the method is to fill the right side of the specified string with the specified character , So as to achieve the purpose of left aligned text .

ljust() The basic format of the method is as follows ：

S.ljust(width[, fillchar])

The meaning of each parameter is as follows ：

• S： Represents the string to be filled ;
• width： Means to include S The length itself is included , The total length of the string ;
• fillchar： As an optional parameter , Used to specify the character used to fill a string , By default, spaces are used .

【 example 1】

S = 'https://editor.csdn.net/md?not_checkout=1&articleId=125648923'
addr = 'https://editor.csdn.net/'
print(S.ljust(35))
print(addr.ljust(35))

The output is ：

https://editor.csdn.net/md?not_checkout=1&articleId=125648923
https://editor.csdn.net/

Be careful , In addition to the obviously visible URL string in the output result , There is a space character after it , Each line has a total of 35 Character length .

【 example 2】

S = 'https://editor.csdn.net/md?not_checkout=1&articleId=125648923'
addr = 'https://editor.csdn.net/'
print(S.ljust(35,'-'))
print(addr.ljust(35,'-'))

The output is ：

https://editor.csdn.net/md?not_checkout=1&articleId=125648923-----
https://editor.csdn.net/t-------------

This program and example 1 The only difference is , The padding character is changed from space to ‘-’.

Python rjust() Method

rjust() and ljust() The method is similar to , The only difference is ,rjust() The method is to fill the left side of the string with the specified character , So as to achieve the purpose of right aligned text .

rjust() The basic format of the method is as follows ：

S.rjust(width[, fillchar])

The meaning of each parameter and ljust() Exactly the same , So I won't repeat the description here .

【 example 3】

S = 'https://editor.csdn.net/md?not_checkout=1&articleId=125648923'
addr = 'https://editor.csdn.net/'
print(S.rjust(35))
print(addr.rjust(35))

The output is ：

 https://editor.csdn.net/md?not_checkout=1&articleId=125648923
https://editor.csdn.net/

You can see , Each line of string takes 35 Byte position , The overall right alignment effect is realized .

【 example 4】

S = 'https://editor.csdn.net/md?not_checkout=1&articleId=125648923'
addr = 'https://editor.csdn.net/'
print(S.rjust(35,'-'))
print(addr.rjust(35,'-'))

The output is ：

-----https://editor.csdn.net/md?not_checkout=1&articleId=125648923
-------------https://editor.csdn.net/

Python center() Method

center() String method and ljust() and rjust() The usage of is similar to , But it centers the text , Not left or right .

center() The basic format of the method is as follows ：

S.center(width[, fillchar])

The meaning of each parameter and ljust()、rjust() In the same way .

【 example 5】

S = 'https://editor.csdn.net/md?not_checkout=1&articleId=125648923'
addr = 'https://editor.csdn.net/'
print(S.center(35,))
print(addr.center(35,))

The output is ：

 https://editor.csdn.net/md?not_checkout=1&articleId=125648923
https://editor.csdn.net/

【 example 6】

S = 'https://editor.csdn.net/md?not_checkout=1&articleId=125648923'
addr = 'https://editor.csdn.net/'
print(S.center(35,'-'))
print(addr.center(35,'-'))

The output is ：

—https://editor.csdn.net/md?not_checkout=1&articleId=125648923–
-------https://editor.csdn.net/------