I tried:
import locale
print(locale.locale_alias)
locale.setlocale(locale.LC_ALL, '')
locale.setlocale(locale.LC_NUMERIC, "french")
print(f"{3.14:.2f}")
but the output is 3.14 whereas I would like 3,14.
How to do this with f”…” string formatting?
Note: I don’t want to use .replace(".", ",")
Note: I’m looking for a Windows solution, and solutions from How to format a float with a comma as decimal separator in an f-string? don’t work (thus it’s not a duplicate on Windows):
locale.setlocale(locale.LC_ALL, 'nl_NL')
# or
locale.setlocale(locale.LC_ALL, 'fr_FR')
locale.Error: unsupported locale setting
7
I looked up the answers on the duplicate flagged page and found an answer that worked:
Change print(f"{3.14:.2f}") to print(f"{3.14:.3n}") and you will get the result: 3,14
See https://docs.python.org/3/library/string.html#format-specification-mini-language:
'n'Number. This is the same as ‘g’, except that it uses the current locale setting to insert the appropriate number separator characters.
Whereas 'g' is described at:
gGeneral format. For a given precision p >= 1, this rounds the number to p significant digits and then formats the result in either fixed-point format or in scientific notation, depending on its magnitude. A precision of 0 is treated as equivalent to a precision of 1.
…Truncated…
The 'f' description is:
'f'Fixed-point notation. For a given precision p, formats the number as a decimal number with exactly p digits following the decimal point.
2
You can use “locale.format_string” instead of “f string”
Try this instead :
import locale
# Set the locale to "french"
locale.setlocale(locale.LC_ALL, 'fr_FR.UTF-8')
# Format the number 3.14 with 2 decimal places, using the french locale
print(locale.format_string("%.2f", 3.14, grouping=True))
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