Math errors in python

[Chris S.]

Richard Townsend wrote:
> On Sun, 19 Sep 2004 08:00:03 GMT, Chris S. wrote:
> 
> 
>>Sqrt is a fair criticism, but Pi equals 22/7, exactly the form this 
>>arithmetic is meant for. Any decimal can be represented by a fraction, 
>>yet not all fractions can be represented by decimals. My point is that 
>>such simple accuracy should be supported out of the box.
>>
> 
> 
> Do you really think Pi equals 22/7 ?

Of course not. That's just a common approximation. Irrational numbers 
are an obvious exception, but we shouldn't sacrifice the accuracy of 
common decimal math just for their sake.

> 
>>>>import math
>>>>print math.pi
> 
> 3.14159265359
> 
>>>>print 22.0/7.0
> 
> 3.14285714286
> 
> What do you get on your $20 calculator ?

The same thing actually.