For some application I need to my computations using 3 digits of precision after decimal. I found the following method:
getcontext().prec = 100
THREE_PLACES = Decimal('0.001')
x = Decimal('2.41').quantize(THREE_PLACES)
y = (x * x).quantize(THREE_PLACES)
but This makes the code very ugly because I need to write quantize(THREE_PLACES) for all my operations which are actually a lot. And also the numbers I am getting with may be very big so that getcontext().prec = 100 may not work for all of them. Any better alternates to this one ? I also found the solution using f string's but that makes the code even uglier.
Edit: I have to explain that getcontext().prec sets the number of significat digits not digits after decimal and because I may have big enough numbers I set it to a big number. See here.