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| import doctest
import pytest
from os import system
def digits(n: int) -> int:
'''Return the number of digits in `n`.
>>> digits(123)
3
'''
return len(str(n))
def test_mytest_digits():
assert digits(0) == 1
def test_provided_digits():
assert digits(0) == 1
assert digits(56) == 2
assert digits(123) == 3
assert digits(7154) == 4
assert digits(61217311514) == 11
def sort_ascend(ns: list) -> list:
'''Return a new list containing `ns` sorted ascending.
>>> sort_ascend([3, 2, 1])
[1, 2, 3]
'''
if not ns or len(ns) == 1:
return ns
return sorted(ns)
def test_sort_ascend_mytest():
assert sort_ascend([]) == []
assert sort_ascend([0]) == [0]
assert sort_ascend([1, 0]) == [0, 1]
assert sort_ascend([0, -1]) == [-1, 0]
def test_sort_ascend_provided():
assert sort_ascend([]) == []
assert sort_ascend([1, 2, 10, 50, 5]) == [1, 2, 5, 10, 50]
assert sort_ascend([80, 29, 4, -95, -24, 85]) == \
[-95, -24, 4, 29, 80, 85]
def mean(ns: list) -> float:
'''Return the mean value of `ns`.
>>> mean([1, 2, 3, 4])
2.5
'''
return float(sum(ns)) / max(len(ns), 1)
def stats(ns: list) -> list:
'''Return a list containing the min, max, len, mean.
>>> stats([1, 2, 3, 4])
[1, 4, 4, 2.5]
'''
if not ns:
return ns
return [min(ns), max(ns), len(ns), mean(ns)]
def test_stats_mytest():
assert stats([]) == []
def test_stats_provided():
assert stats([6, 9, 15, -2, 92, 11]) == [-2, 92, 6, 21.833333333333332]
assert stats([30, 43, 20, 92, 3, 74]) == [3, 92, 6, 43.666666666666664]
assert stats([4.54, 8.32, 5.20]) == [4.54, 8.32, 3, 6.02]
if __name__ == '__main__':
pytest.main(['-q', __file__])
doctest.testmod()
system(f'mypy {__file__} --ignore-missing-imports')
system(f'flake8 {__file__}')
|