flake8-digit-separator 0.1.0

Correct placement of separators

flake8-digit-separator

A set of rules on top of the capabilities provided by PEP515.

correct_int = 10_000
correct_float = 10_000.1_234
correct_binary = 0b_1101_1001
correct_octal = 0o_134_155
correct_hex = 0x_CAFE_F00D

Installation

pip install flake8-digit-separator

Dependencies

• python (>=3.10, <4.0)
• flake8 (>=7.1, <8.0)

Usage

flake8 . --select FDS

Rules

PEP515 allows separators, but does not impose any restrictions on their position in a number (except that a number should not start/end with a separator and there should not be two separators in a row). To introduce more rigor and beauty into the code, we have written a few simple rules that we suggest following.

Rule	Number	Description	Correct	Wrong
FDS100	integer	Group by 3s from right	10_000	10_0
FDS200	float	Group by 3s from right	10_000.1_234	1_0_0.123_4
FDS300	binary	Group by 4s from right after prefix 0b	0b_1101_1001	0b110_11
FDS400	octal	Group by 3s from right after prefix 0o	0o_12_134_155	0o1_23_45
FDS500	hex	Group by 4s from right after prefix 0x	0x_CAFE_F00D	0xCAFEF0_0D

License

FDS is released under the MIT License. See the bundled LICENSE file for details.

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