Oct 4, 2019 · 5 String starting with f are formatted string literals. Suppose you have a variable: pi = 3.14 To concatenate it to a string you'd do: s = "pi = " + str(pi) Formatted strings come in handy here. …

python performance string-formatting f-string edited Aug 17, 2022 at 7:09 Karl Knechtel 61.5k 14 134 194

Unlike f -strings, the {...} placeholders are not expressions and you can't use arbitrary Python expressions in the template. This is a good thing, you wouldn't want end-users to be able to execute …

There's no way to programmatically create an f-string: In Python source code, an f-string is a literal string, prefixed with 'f', which contains expressions inside braces.

Jun 27, 2017 · The other answers give ideas for how to put the newline character into a f-string field. However, I would argue that for the example the OP gave (which may or may not be indicative of …

Aug 16, 2018 · How can I use f-string with logic to format an int as a float? I would like if ppl is True to format num to 2 decimal places, and if ppl is False to rformat it as whatever it is. Something like st...

I don't think formatted string literals allowing nesting (by nesting, I take it to mean f'{f".."}') is a result of careful consideration of possible use cases; I'm more convinced it's just allowed in order for them to …

Mar 2, 2016 · This little f before the " (double-quote) and the {} characters tell python 3, "hey, this string needs to be formatted. So put these variable in there and format it.".

I have a string in which I would like curly-brackets, but also take advantage of the f-strings feature. Is there some syntax that works for this? Here are two ways it does not work. I would like to

Jun 26, 2017 · An f-string is syntax, not an object type. You can't convert an arbitrary string to that syntax, the syntax creates a string object, not the other way around. I'm assuming you want to use …