Adopt flake8

[simonw]

[simonw]

That shouldn't be failing: it's complaining about these:

sqlite-utils/tests/test_register_function.py

Lines 56 to 67 in 02898bf

	# This will fail to replace the function:
	@fresh_db.register_function()
	def one(): # noqa: F811
	return "two"
	assert "one" == fresh_db.execute("select one()").fetchone()[0]
	# This will replace it
	@fresh_db.register_function(replace=True)
	def one(): # noqa: F811
	return "two"

But I added # noqa: F811 to them.

[simonw]

This already helped me spot a bug in a test: 90e211e#diff-4e8715c7a425ee52e74b7df4d34efd32e8c92f3e60bd51bc2e1ad5943b82032eL1160-L1161