timing_array_making.py

from timeit import Timer

cases = list(ln.split('#') for ln in
"""array('i', [0]) * n  #arr * n
array('i', [0]*n)       #arr(lst*n)
array('i', range(n))    #arr(range)
array('i', (0 for _ in range(n)))  #arr(0 for range)
""".splitlines())

for i in range(8):
    n = 10 ** i
    print(f'\n{n = } = 1e{i}')
    for stmt, tag in cases:
        k, t = Timer(stmt,
            setup='from array import array',
            globals={'n': n}
            ).autorange()
        print(f'{t/k*1000: 10.4f} ms : {tag}')

Some links:

• https://stackoverflow.com/questions/32159424/python-typed-array-of-a-certain-size
• https://docs.python.org/dev/library/array.html
• https://docs.python.org/dev/library/timeit.html#timeit.Timer.autorange