<human>:  format center padding.
<bot>: Here is a Python code format center padding

import re

def _center_padding(string, width, fillchar=' '):
  """
  Format a string with center padding.
  """
  return fillchar * (width - len(string)) + string

# Enter the string
string = "lilly"

# Enter the width
width = 10

# Enter the fillchar
fillchar =''

# Calling the function
print((_center_padding(string, width, fillchar)))

#Example Output
# lilly

#Remember to inspect code for bugs.