In Python, the str.rjust() method is used to right-align a string within a specified width, padding it with a specified character (space by default) on the left side. This method is helpful for formatting strings when you want them to appear aligned to the right within a given space, which can be particularly useful in console output or creating formatted text displays.

Syntax

str.rjust(width, fillchar=' ')

• width: The total width of the resulting string after padding. If this value is less than the length of the original string, the original string is returned unchanged.
• fillchar (optional): The character to use for padding the string on the left side. This must be a single character. The default is a space (' ').

Example Usage

1. Basic usage with default padding (spaces):

text = "Hello"
result = text.rjust(10)
print(result)  # Output: "     Hello"

2. Using a custom fill character:

text = "Hello"
result = text.rjust(10, '*')
print(result)  # Output: "*****Hello"

3. Width less than the original string:

If the specified width is less than the length of the original string, the original string is returned unchanged:

text = "Hello, World!"
result = text.rjust(5)
print(result)  # Output: "Hello, World!" (unchanged)

4. Padding with a different fill character:

You can specify any single character for padding:

text = "Python"
result = text.rjust(10, '-')
print(result)  # Output: "----Python"

5. Empty string:

If an empty string is passed, the result will also be an empty string regardless of the specified width:

text = ""
result = text.rjust(10)
print(result)  # Output: "          " (10 spaces)

Summary

• Use str.rjust() to right-align a string within a specified width.
• It allows for customizable padding using a fill character, defaulting to a space if none is specified.
• If the specified width is less than the length of the string, the original string is returned without modification.
• This method is useful for formatting output in console applications or in any scenario where text alignment is important.