human
Give me a Python function to create a variable name by concatenating strings.
assistant
Here is a Python function to create a variable name by concatenating strings

import numpy as np

def _(name, *args):
    """
    create valiable name by concatinate strings in
    """
    return '_'.join([name] + list(args))

# Enter the data
x = [1, 2, 3, 4, 5]
y = [1, 2, 3, 4, 5]

# Calling the function
print((_('x', 'y')))

#Example Output
# x_y

#Remember to inspect code for bugs.