Python string ljust() usage and examples

Python string methods

The string ljust() method 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.

The 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) -The character used to fill the remaining space of the fill width

The return value of the string ljust()

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.

Example1Minimum width of the left-aligned string

# 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.

Example2Left-aligned 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 the character "

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

Python string methods