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Formatting floating point

On 9/4/19 1:38 PM, Rhodri James wrote:
> On 04/09/2019 18:12, Dave via Python-list wrote:
>> My question is why, and where do I find a reliable source of 
>> information on formatting numbers?? Not interested in replacement 
>> values like '{} {}'.format(1, 2).
> Here: 
> I suspect the thing you were overlooking was that format() expects to be 
> given a format specification, and you gave it a format string.? Instead 
> of format(num, "{0:.1f}"), you wanted format(num, ".1f").? If you had 
> tried "{0:.1f}".format(num) instead, you would have found that worked too.
Thanks Rhodri