sol1.py

"""
Project Euler Problem 80: https://projecteuler.net/problem=80
Author: Sandeep Gupta
Problem statement: For the first one hundred natural numbers, find the total of
the digital sums of the first one hundred decimal digits for all the irrational
square roots.
Time: 5 October 2020, 18:30
"""

importdecimal


defsolution() ->int:
"""
 To evaluate the sum, Used decimal python module to calculate the decimal
 places up to 100, the most important thing would be take calculate
 a few extra places for decimal otherwise there will be rounding
 error.

 >>> solution()
 40886
 """
answer=0
decimal_context=decimal.Context(prec=105)
foriinrange(2, 100):
number=decimal.Decimal(i)
sqrt_number=number.sqrt(decimal_context)
iflen(str(sqrt_number)) >1:
answer+=int(str(sqrt_number)[0])
sqrt_number_str=str(sqrt_number)[2:101]
answer+=sum(int(x) forxinsqrt_number_str)
returnanswer


if__name__=="__main__":
importdoctest

doctest.testmod()
print(f"{solution() =}")