repr

Published: Wednesday, Dec 26, 2007 Last modified: Saturday, Mar 23, 2024

Watch out when printing floats:

13:07 < hendry> print (0.0424, 0.0343) # prints (0.0424, 0.034299999999999997), why not: (0.0424, 0.0343) ?

13:07 < Erwin> hendry: because there is no such floating point number as 0.0343

13:07 < Erwin> python used to round when printing at random times but does not do that anymore.

13:07 < hendry> print (0.0343) is ok though??

13:08 < hendry> bit inconsistent seemingly

13:08 < Erwin> when you print a single value,with print, it uses str which rounds

13:08 < Erwin> when you print a tuple or a list with str, each item is repr'ed

13:09 < Erwin> >>> print (0.0343,)

13:09 < Erwin> (0.034299999999999997,)

13:09 < Erwin> this makes a tuple

13:09 < hendry> Thanks Erwin

13:09 < hendry> You made that clear.