method to remove zero digits from fraction in decimal

[deanhystad]

So you want decimal to resize to a minimum precision instead of remembering the precision it inherited from a math operation.

from decimal import Decimal as D

a = D("3")
b = D("2")
c = b / a
d = c * a
print(a, b, c, d)

Output:
3 2 0.6666666666666666666666666667 2.000000000000000000000000000

d should be 2 instead of 2.000000000000000000000000000

One way to make a new decimal with all trailing zeros removed.

from decimal import *
from decimal import Decimal as D

def rstrip(value:D)->D:
    """I'm a happy little function :D with a tragic ending D:"""
    value_str = str(value)
    if "." in value_str:
        return D(value_str.rstrip(".0"))
    return value

a = D("3")
b = D("2")
c = rstrip(b / a)
d = rstrip(c * a)
print(a, b, c, d, D(1000))

Output:
3 2 0.6666666666666666666666666667 2 1000