[Tutor] Meaning of %g ?
alan.gauld at freenet.co.uk
Thu Apr 13 14:28:54 CEST 2006
> What is the exact meaning of %g in Python ?
Same as in C.
Its the shorter of the Scientific notation (%e) or Floating
In 20 years of using C I've never needed it, I wouldn't worry
too much! :-)
>From Python ducumentation:
> %g: Same as "e" if exponent is greater than -4 or less than
> precision, "f" otherwise.
Yeah, thats not very clear.
> Why "%.15g", "%.16g", "%.17g", "%.f", "%.16f" are different ?
Why? Because Kernighan & Ritchie made them different in C.
Why? Because they did a lot of sacientific calculations and wanted
the subtle variations I suspect.
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