human
replace in place string.
assistant
Here is a Python function to replace in place string

import re

def replace_in_place(string, old, new):
    """Replace old with new in place.

    :param str string:
    :param str old:
    :param str new:
    :rtype: str
    :return:
    """
    string = string.replace(old, new)
    return string

# Enter the string
string = "Hello"

# Enter the old string
old = "Hello"

# Enter the new string
new = "World"

# Calling the function
print((replace_in_place(string, old, new)))

#Example Output
# World

#Remember to inspect code for bugs.