Count the Number of Spaces in a String in Python

my_string = "Good morning and hello world"

count = 0

for c in my_string:
    if c == " ":
        count += 1

print(count)

def count_spaces_string(my_string: str) -> int:
    """
    Count the number of spaces in a string

    :param my_string: The actual string
    :return: The number of spaces in that string
    """
    count = 0
    for c in my_string:
        if c == " ":
            count += 1
    return count


example_string = "Good morning and hello world"
print(count_spaces_string(example_string))

import pytest

# Assuming the count_spaces_string function is stored under app.string_operations
from app.string_operations import count_spaces_string


@pytest.mark.parametrize(
    "input_string, expected_output",
    [("Good morning and hello world", 4), ("Hello", 0), ("", 0)],
)
def test_count_spaces_string(input_string, expected_output):
    """
    Test the count_spaces_string function across different strings

    :param input_string: The input string to test
    :param expected_output: The expected number of spaces in the string tested
    """
    assert count_spaces_string(input_string) == expected_output

============================= test session starts =============================
collecting ... collected 3 items

test_string_operations.py::test_count_spaces_string[Good morning and hello world-4] PASSED [ '33%']
test_string_operations.py::test_count_spaces_string[Hello-0] PASSED      [ '66%']
test_string_operations.py::test_count_spaces_string[-0] PASSED           ['100%']

============================== 3 passed in '0.01s' ==============================