Working directly in site-packages/pyflakes is turning out to be an
excellent (if eccentric) strategy. It's liberating to use live code
without cloning or forking a repo.
Yesterday I found the last piece of the puzzle. Aha! *g.funcToMethod* (a
thin wrapper for setattr) can be applied to *classes*, not just class
*instances!*
This Aha changes everything! There is no need to create a plugin framework
for pyflakes! Checker.__init__ doesn't need to change! Here's my latest
experimental (Leonine!) script:
import ast
from pyflakes.api import check
from pyflakes.checker import Checker
<< define test >>
# Define an ATTRIBUTE *function*,
# to be converted to a Checker *method*.
@others
g.funcToMethod(ATTRIBUTE, Checker)
check(test, filename='pyflakes_test.py')
Any changes to the ATTRIBUTE function take effect immediately, without
calling importlib.reload. That's big. I live for these Ahas.
Edward
P.S. Here is the latest version of the ATTRIBUTE function.
def ATTRIBUTE(self, node) -> None:
if isinstance(node.value, ast.Name):
g.trace(
f"{node.ctx.__class__.__name__}"
f"{node.value.id}.{node.attr}")
self.handleChildren(node)
It replaces (part of) this assignment in checker.py:
# "expr" type nodes
BOOLOP = UNARYOP = SET = ATTRIBUTE = STARRED = NAMECONSTANT = \
NAMEDEXPR = handleChildren
EKR
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