Human: list combine to string with delimiter. Assistant: 
Here is a Python function to return list combine to string with delimiter

import numpy as np

def combine_list_to_string(list_of_list, delimiter=','):
    """Combine list to string with delimiter.

    :param list list_of_list:
    :param str delimiter:
    :rtype: str
    :return:
    """
    return delimiter.join([str(x) for x in list_of_list])

# Enter the array
a = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10])

# Calling the function
print((combine_list_to_string(a)))

#Example Output
# 1,2,3,4,5,6,7,8,9,10

#Remember to inspect code for bugs.