printfmt("{:,}", 1234) doesn't print as 1,234

[lewisl]

It is shown clearly as an actual example in the Python formatting specification shown. It doesn't work.

[ScottPJones]

It looks like support for commas was never actually implemented for the Python formatting functions.
It does work in JuliaString/Format.jl, using the C format function, or the generic fmt function
(note the renaming in that package, fmt -> pyfmt, sprintf1 -> cfmt, and a new generic fmt function)

[jtrakk]

To give an example, this form works in Python but not Julia. I don't succeed with fmt either.

Python:

In [2]: "{:,}".format(123456)
Out[2]: '123,456'

Julia:

julia> printfmt("{:,}", 123456)
123456
julia> fmt(FormatSpec(","), 123456)
"123456"

[ScottPJones]

https://github.com/JuliaString/Format.jl does handle commas.
fmt(123456, :commas) will return 123,456