Python center() Method

What You’ll Learn

The center() method returns a new string with the original text centered inside a field of a specified width. Padding is added on both sides—using spaces by default, or any single character you choose. It is a simple way to format headers, console output, and fixed-width columns.

Definition and Usage

In Python, center() is a built-in string method that pads the string on the left and right so the original text sits in the middle of a field with total length width. For example, "Python".center(10, "*") returns "**Python**"— two asterisks on each side to reach a total width of 10 characters.

📝 Syntax

The center() method accepts one required and one optional parameter:

string.center(width, fillchar)

Syntax Rules

• width — the total length of the returned string (required, integer).
• fillchar — optional single character used for padding; defaults to a space (" ").
• Return value — a new str; the original is never modified.
• Width too small — if width <= len(string), the original string is returned unchanged.
• Odd padding — when extra space does not split evenly, the left side gets one extra character.

Examples Gallery

Run these examples in any Python 3 interpreter. Each one shows a common center-alignment pattern.

original = "Python"
centered = original.center(10, "*")

print("Original:", original)
print("Centered:", centered)
print("Length:  ", len(centered))

Original: Python
Centered: **Python**
Length:   10

text = "Hi"
padded = text.center(8)

print(repr(padded))
print(len(padded))

'   Hi   '
8

title = "Welcome to Python"
banner = title.center(30, "-")

print(banner)

-----Welcome to Python------

scores = ["92", "100", "87", "95"]

print(" Score ")
print("-" * 7)
for score in scores:
    print(score.center(7))

 Score 
-------
  92   
 100   
  87   
  95   

word = "Data"
width = 12

print("center:", repr(word.center(width, ".")))
print("ljust: ", repr(word.ljust(width, ".")))
print("rjust: ", repr(word.rjust(width, ".")))

center: '....Data....'
ljust:  'Data........'
rjust:  '........Data'

🚀 Common Use Cases

• Console banners — center titles and section headers with dash or star padding.
• Report columns — align numeric or short text values in fixed-width fields.
• Receipt formatting — center store names or headings on printed lines.
• CLI menus — highlight the active menu title in the middle of the screen width.
• Debug output — visually separate log sections with centered divider lines.

📝 Notes

• fillchar must be exactly one character. Passing "--" raises TypeError.
• When padding does not divide evenly, the extra character goes on the left side.
• center() counts string length in characters, not display width—emoji and some Unicode may appear wider in terminals.
• For left or right alignment instead, use ljust() or rjust().

💡 Best Practices