Knob to set blank lines near imports, classes, functions and methods

BLANK_LINE_BEFORE_NESTED_CLASS_OR_DEF allows adding a blank line before nested classes or methods.

Ideally, a knob would allow setting a specified amount of blank lines near:

• Top-level imports
• Top-level classes and functions
• Classes
• Methods
• Top-level comments

Alternatively, offer a knob can allow “maximum blank lines”, thus allowing blank lines after imports (for example). Right now they get formatted away.

[bwendling]

Adding the knobs shouldn’t be too hard. I’ll bump up the priority here.

[jamesbeith]

yapf and isort currently handle blank lines near Top-level imports and comments differently. isort is happy with this:

from foo import bar


# Public


def baz():
    pass

but yapf wants to remove a line between the import and the comment.

from foo import bar

# Public


def baz():
    pass

Irrespective of isort’s behaviour, it would be nice to control the number of spaces here so there’s 2 (ideally configurable) both above and below the comment. Should behave the same when there’s a constant too.

from foo import bar

QUX = 'quux'


# Public


def baz():
    pass