Find the Min value in a Python List without using the min function

my_list = [54, 890, 25, 12500, 7, 115]

min_value = my_list[0]

for val in my_list:
    if val < min_value:
        min_value = val

print(min_value)

def find_min_value(my_list):
    """
    Find the minimum value in a list

    :param my_list: The input list
    :return: The minimum value in the list
    """
    if not my_list:
        raise ValueError("List is empty")

    min_value = my_list[0]

    for val in my_list:
        if val < min_value:
            min_value = val
    return min_value


list_of_numbers = [54, 890, 25, 12500, 7, 115]

print(find_min_value(list_of_numbers))

import pytest

# Assuming the find_min_value function is stored under app.number_operations
from app.number_operations import find_min_value


@pytest.mark.parametrize(
    "input_list, expected_output",
    [
        ([54, 890, 25, 12500, 7, 115], 7),
        ([3.14, 2.71, 1.618, 2.71828], 1.618),
        (["apple", "banana", "orange", "kiwi"], "apple"),
        ([], None),
    ],
)
def test_find_min_value(input_list, expected_output):
    """
    Test the find_min_value function across different lists

    :param input_list: The input list
    :param expected_output: The expected output of the min value, or an exception for an empty list
    """
    if not input_list:
        with pytest.raises(ValueError):
            find_min_value(input_list)
    else:
        assert find_min_value(input_list) == expected_output

============================= test session starts =============================
collecting ... collected 4 items

test_number_operations.py::test_find_min_value[input_list0-7] PASSED     [' 25%']
test_number_operations.py::test_find_min_value[input_list1-1.618] PASSED [ '50%']
test_number_operations.py::test_find_min_value[input_list2-apple] PASSED [ '75%']
test_number_operations.py::test_find_min_value[input_list3-None] PASSED  ['100%']

============================== 4 passed in '0.02s' ==============================