Use Python 3 string formatting. This is still available in earlier versions (from 2.6), but is the 'new' way of doing it in Py 3. Note you can either use positional (ordinal) arguments, or named arguments (for the …

For reference: Python 3 documentation for the newer format() formatting style and the older % -based formatting style.

Starting with Python 3.6, formatting in Python can be done using formatted string literals or f-strings:

Using custom placeholder tokens with python string.format() Context python 2.7 string.format() alternative approach that allows custom placeholder syntax Problem We want to use custom …

How do I print an integer with commas as thousands separators? 1234567 1,234,567 It does not need to be locale-specific to decide between periods and commas.

Use f-strings if you just need to format something on the spot to print or create a string for other reasons, str.format() to store the template string for re-use and then interpolate values.

Aug 3, 2010 · This method of string formatting is the new standard in Python 3.0, and should be preferred to the % formatting described in String Formatting Operations in new code.

Jul 2, 2012 · Is it possible to do partial string formatting with the advanced string formatting methods, similar to the string template safe_substitute() function? For example: s = '{foo} {bar}' s.format(foo=...

I construct a string s in Python 2.6.5 which will have a varying number of %s tokens, which match the number of entries in list x. I need to write out a formatted string. The following doesn't work...

91 As Python 3.0 and 3.1 are EOL'ed and no one uses them, you can and should use str.format_map(mapping) (Python 3.2+): Similar to str.format(**mapping), except that mapping is …