Question

How to change the default precision of the decimal type in Python

Answer 1

from decimal import getcontext, Decimal
import math

getcontext().prec = 15
result = Decimal(1) / Decimal(8)

print("   math.sqrt: {0}".format(Decimal(math.sqrt(result))))

print("decimal.sqrt: {0}".format(result.sqrt()))




'''
run:

   math.sqrt: 0.353553390593273786368655464684707112610340118408203125
decimal.sqrt: 0.353553390593274

'''

 

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