Python string ljust() usage and example

Python string methods

The ljust() method of string in Python returns a new string that is left-aligned from the original string and filled with spaces to the specified length.

The syntax of the ljust() method is:

string.ljust(width[, fillchar])

fillchar is an optional parameter.

String ljust() parameters

The ljust() method takes two parameters:

• width-The width of the given string. If the fill width is less than or equal to the length of the string, the original string is returned.

• fillchar (optional) -Character used to fill the remaining space of the fill width

String ljust() return value

The ljust() method returns a left-aligned string within the given minimum width.

If fillchar is defined, the remaining space will also be filled with the defined character.

Example1：Left-aligned string with minimum width

#String
string = 'cat'
width =　5
#Print left-aligned string
print(string.ljust(width))

When running the program, the output is:

cat

Here, the minimum value defined by width is5.Therefore, the minimum length of the resulting string is5.

And, the string 'cat' is left-aligned, leaving two spaces on the right of the word.

Example2：Left-align the string and fill the remaining spaces

#Example string
string = 'cat'
width =　5
fillchar = '*'
#Print left-aligned string
print(string.ljust(width, fillchar))

When running the program, the output is:

cat**

Here, the string 'cat' is left-aligned, and the remaining two spaces on the right are filled with the character *Fill with quotes.

Note:If you want to right-align a string, please userjust()You can also useformat()Method to format strings.

Python string methods