human
join only part of a list.
assistant
Here is a Python code to join only part of a list

import re

def join_only_part(l, n):
        """Join only part of a list."""
        return [x for x in l[:n]]

# Enter the list
l = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]

# Calling the function
print((join_only_part(l, 5)))

#Example Output
# [1, 2, 3, 4, 5]

#Remember to inspect code for bugs.