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+--- Thread: Python 3.8.1 Decimal error (/thread-24942.html)
Python 3.8.1 Decimal error - christopherhornback - Mar-11-2020
So I was running a simple loop to get me a list of decimal places, and stumbled onto this.
>>> for i,a in enumerate(list(range(20))):
i, a*0.05
i, a*0.1
(0, 0.0)
(0, 0.0)
(1, 0.05)
(1, 0.1)
(2, 0.1)
(2, 0.2)
(3, 0.15000000000000002)
(3, 0.30000000000000004)
(4, 0.2)
(4, 0.4)
(5, 0.25)
(5, 0.5)
(6, 0.30000000000000004)
(6, 0.6000000000000001)
(7, 0.35000000000000003)
(7, 0.7000000000000001)
(8, 0.4)
(8, 0.8)
(9, 0.45)
(9, 0.9)
(10, 0.5)
(10, 1.0)
(11, 0.55)
(11, 1.1)
(12, 0.6000000000000001)
(12, 1.2000000000000002)
(13, 0.65)
(13, 1.3)
(14, 0.7000000000000001)
(14, 1.4000000000000001)
(15, 0.75)
(15, 1.5)
(16, 0.8)
(16, 1.6)
(17, 0.8500000000000001)
(17, 1.7000000000000002)
(18, 0.9)
(18, 1.8)
(19, 0.9500000000000001)
(19, 1.9000000000000001)
Obviously I could just use the round() function, but that defeats the purpose.
I tried this in my normal script(with imported packages), in a fresh Idle(no imported packages), and a fresh shell. All have the same result.
RE: Python 3.8.1 Decimal error - buran - Mar-11-2020
does this answer your question:
https://docs.python.org/3.8/tutorial/floatingpoint.html