Difference between old and new formatting options Python

Asked Oct 05 '17 at 18:56

Active Oct 05 '17 at 19:05

Viewed 162 times

What is the difference between this "Old" type of formatting and the "New" type of formatting?

New: '%s %s' % ('one', 'two')

Old: '{} {}'.format('one', 'two')

Can someone explain this to me? Every example I've tried has given me the same result regardless of either formatting option. Is this just for personal preference? If so that seems kind of wasteful?

EDIT: also what is this? f'{one} {two}' as mentioned in the comments....

edited Oct 05 '17 at 19:01

asked Oct 05 '17 at 18:56

Max Bethke

2

and what about the [newnew](https://docs.python.org/3/whatsnew/3.6.html#pep-498-formatted-string-literals) `f'{one} {two}'` ? – PRMoureu Oct 05 '17 at 18:57
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the % one is now deprecated. format is way more powerful. – Jean-François Fabre Oct 05 '17 at 18:58
_Whaaa!_ There's more?! – Max Bethke Oct 05 '17 at 18:58
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python 3.6 only IIRC – Jean-François Fabre Oct 05 '17 at 18:58
@Jean-FrançoisFabre Can you please elaborate? – Max Bethke Oct 05 '17 at 18:58
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the `f` prefix is new in the language. You need python 3.6 – Jean-François Fabre Oct 05 '17 at 18:59
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python comes back to its roots ... -> C – ralf htp Oct 05 '17 at 19:02
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This might help you https://mkaz.tech/code/python-string-format-cookbook/ – Dharmesh Fumakiya Oct 05 '17 at 19:03
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@Dharmesh bookmarked thanks! – Max Bethke Oct 05 '17 at 19:05
:( my question has been downvoted, Sorry I didn't realize there was a question like it.. the way I searched for it didn't make it show – Max Bethke Oct 05 '17 at 19:06
If this question is duplicate of two other questions does that mean that the two other questions are duplicates of the other? Which ever was made first? – Max Bethke Oct 05 '17 at 19:12

Difference between old and new formatting options Python

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