pronic_number.py

"""
== Pronic Number ==
A number n is said to be a Proic number if
there exists an integer m such that n = m * (m + 1)

Examples of Proic Numbers: 0, 2, 6, 12, 20, 30, 42, 56, 72, 90, 110 ...
https://en.wikipedia.org/wiki/Pronic_number
"""

# Author : Akshay Dubey (https://github.com/itsAkshayDubey)


defis_pronic(number: int) ->bool:
"""
 # doctest: +NORMALIZE_WHITESPACE
 This functions takes an integer number as input.
 returns True if the number is pronic.
 >>> is_pronic(-1)
 False
 >>> is_pronic(0)
 True
 >>> is_pronic(2)
 True
 >>> is_pronic(5)
 False
 >>> is_pronic(6)
 True
 >>> is_pronic(8)
 False
 >>> is_pronic(30)
 True
 >>> is_pronic(32)
 False
 >>> is_pronic(2147441940)
 True
 >>> is_pronic(9223372033963249500)
 True
 >>> is_pronic(6.0)
 Traceback (most recent call last):
 ...
 TypeError: Input value of [number=6.0] must be an integer
 """
ifnotisinstance(number, int):
msg=f"Input value of [number={number}] must be an integer"
raiseTypeError(msg)
ifnumber<0ornumber%2==1:
returnFalse
number_sqrt=int(number**0.5)
returnnumber==number_sqrt* (number_sqrt+1)


if__name__=="__main__":
importdoctest

doctest.testmod()