Python, equality vs list membership

test.py

def is_special_number(number):
    if number == 7:
        return True
    elif number == 18:
        return True
    else:
        return False

def is_special_number_2 (number):
    return number in [7, 18]

import time

def measure_execution_time(func, iterations, *args):
    start_time = time.time()
    for _ in range(iterations):
        func(*args)
    end_time = time.time()
    print(f"Execution time for {func.__name__}: {end_time - start_time} seconds")

for _ in range(3):
    measure_execution_time(is_special_number, 10000000, 10)
    measure_execution_time(is_special_number_2, 10000000, 10)

# M1 Pro, 3.11.6
# Execution time for is_special_number: 0.4272191524505615 seconds
# Execution time for is_special_number_2: 0.4768540859222412 seconds
# Execution time for is_special_number: 0.42814183235168457 seconds
# Execution time for is_special_number_2: 0.4768698215484619 seconds
# Execution time for is_special_number: 0.4265279769897461 seconds
# Execution time for is_special_number_2: 0.47823524475097656 seconds
# Avg 0.43 vs 0.48


# M1 Pro, 3.12.0
# Execution time for is_special_number: 0.40006017684936523 seconds
# Execution time for is_special_number_2: 0.4342169761657715 seconds
# Execution time for is_special_number: 0.3950788974761963 seconds
# Execution time for is_special_number_2: 0.4562370777130127 seconds
# Execution time for is_special_number: 0.3969869613647461 seconds
# Execution time for is_special_number_2: 0.4354100227355957 seconds
# Avg 0.40 vs 0.44