Formatted numerical output

[Mark]

How do I output formatted numerical data to an external (text) file. At
a minimum I want to specify the number of decimal places to print.
Ideally I'd like the type of control the fortran FORMAT statement
offers. I'm sure this is easy, but I can't seem to find the answer!

I want an output file to look like this:

0.1 0.8575
0.2 12.0900
0.4 345.0000
0.5 9.0002

etc.

Thanks,

Mark

[Kent Johnson]

Re: Formatted numerical output

Mark wrote:[color=blue]
> How do I output formatted numerical data to an external (text) file. At
> a minimum I want to specify the number of decimal places to print.
> Ideally I'd like the type of control the fortran FORMAT statement
> offers. I'm sure this is easy, but I can't seem to find the answer![/color]

Use string formatting operations

http://docs.python.org/lib/typesseq-strings.html

[color=blue]
>
> I want an output file to look like this:
>
> 0.1 0.8575
> 0.2 12.0900
> 0.4 345.0000
> 0.5 9.0002[/color]

Something like

s = "%3.1f %8.4f\n" % (x, y)
out.write(s)


Kent

[Mark]

Re: Formatted numerical output

Kent Johnson wrote:[color=blue]
> Mark wrote:
>[color=green]
>> How do I output formatted numerical data to an external (text) file.[/color]
>
> Use string formatting operations
> http://docs.python.org/lib/typesseq-strings.html[/color]

Great stuff. Thanks.