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basic_maths input check #4486

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Merged
merged 3 commits into from
Jun 16, 2021
Merged

basic_maths input check #4486

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64b7654
Prime factor input check
haningrisha Jun 5, 2021
bc5cb33
number_of_divisors input check
haningrisha Jun 5, 2021
8c5ba77
sum_of_divisors input check
haningrisha Jun 5, 2021
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37 changes: 33 additions & 4 deletions maths/basic_maths.py
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Original file line number Diff line number Diff line change
Expand Up @@ -6,7 +6,17 @@ def prime_factors(n: int) -> list:
"""Find Prime Factors.
>>> prime_factors(100)
[2, 2, 5, 5]
>>> prime_factors(0)
Traceback (most recent call last):
...
ValueError: Only positive integers have prime factors
>>> prime_factors(-10)
Traceback (most recent call last):
...
ValueError: Only positive integers have prime factors
"""
if n <= 0:
raise ValueError("Only positive integers have prime factors")
pf = []
while n % 2 == 0:
pf.append(2)
Expand All @@ -24,7 +34,17 @@ def number_of_divisors(n: int) -> int:
"""Calculate Number of Divisors of an Integer.
>>> number_of_divisors(100)
9
>>> number_of_divisors(0)
Traceback (most recent call last):
...
ValueError: Only positive numbers are accepted
>>> number_of_divisors(-10)
Traceback (most recent call last):
...
ValueError: Only positive numbers are accepted
"""
if n <= 0:
raise ValueError("Only positive numbers are accepted")
div = 1
temp = 1
while n % 2 == 0:
Expand All @@ -44,7 +64,17 @@ def sum_of_divisors(n: int) -> int:
"""Calculate Sum of Divisors.
>>> sum_of_divisors(100)
217
>>> sum_of_divisors(0)
Traceback (most recent call last):
...
ValueError: Only positive numbers are accepted
>>> sum_of_divisors(-10)
Traceback (most recent call last):
...
ValueError: Only positive numbers are accepted
"""
if n <= 0:
raise ValueError("Only positive numbers are accepted")
s = 1
temp = 1
while n % 2 == 0:
Expand Down Expand Up @@ -74,7 +104,6 @@ def euler_phi(n: int) -> int:


if __name__ == "__main__":
print(prime_factors(100))
print(number_of_divisors(100))
print(sum_of_divisors(100))
print(euler_phi(100))
import doctest

doctest.testmod()