Python | Decimal same_quantum() method

Python | Decimal same_quantum() method

The same_quantum() method is a part of the Decimal type in Python's decimal module. The purpose of this method is to check whether two Decimal numbers have the same exponent.

In other words, it checks if two Decimal numbers are expressed with the same number of decimal places. This doesn't necessarily mean the numbers are equal in value; it only checks if they are specified with the same precision.

Here's a quick explanation with some examples:

from decimal import Decimal # Example 1: a = Decimal('10.123') b = Decimal('20.123') # Both a and b have the same number of decimal places (3 decimal places). print(a.same_quantum(b)) # True # Example 2: c = Decimal('10.123') d = Decimal('20.1234') # c and d have different numbers of decimal places. print(c.same_quantum(d)) # False # Example 3: e = Decimal('100') f = Decimal('200') # Both e and f have no decimal places. print(e.same_quantum(f)) # True

In the examples:

  1. a and b both have the same number of decimal places (3), so same_quantum returns True.
  2. c has 3 decimal places, while d has 4. Hence, same_quantum returns False.
  3. Both e and f have zero decimal places, so same_quantum returns True.

The same_quantum() method can be especially useful when you want to determine if two numbers are expressed with the same precision, regardless of their actual values.

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