Python how to include a string with random integer [duplicate]

This question already has an answer here:

• How can I concatenate a string and a number in Python? [duplicate] 7 answers
• How do I put a variable inside a String in Python? 6 answers

I want to make a random police unit generator and the code is like so:

import random
unitnumbers = ('unit' , random.randint(1,999))
print(unitnumbers)

However, rather than printing "unit 63" , it prints ('unit', 378)

How could I make it print only the unit and random number?