<human>:  way to change the string "" to have all uppercase letters.
<bot>: Here is a Python program to change the string "" to have all uppercase letters

import random

def uppercase(s):
  """Change the string `s` to have all uppercase letters."""
  return s.upper()

# Enter the string
string = "This is a string"

# Calling the function
upper_string = uppercase(string)

# Printing the upper string
print(upper_string)

#Example Output
# THIS IS A STRING

#Remember to inspect code for bugs.