On Feb 18, 2019, at 8:37 PM, Simon <[email protected]> wrote:
>
> I'd like to propose an update to PEP8. Indeed, the 80 characters per line
> guideline is, I feel, outdated.
I concur. We now put expressions in f-strings and have assignment expressions
that easily spill over 80 characters if one uses all but the most compact
variable names. Comprehensions tend to make expressions longer. Queries and
filters in Pandas also easily spill over. The 80 character limit pre-dates
these evolutions of the language.
In particular, the case where I most want to let people run with long lines is
in forming messages to be displayed to a user. Templates can get fat even if
the displayed message is not long. The code is more readable if people don't
mangle their templates with line wrapping.
class Frabawidget:
...
@wozzle.setter
def (self, woozle):
if not (self.min_woozle < woozle < self.max_woozle):
raise ValueError(f"Expected woozle to be between {self.min_woozle}
and {self.max_woozle}")
self._wozzle = normalize(woozle)
In doing code reviews, I see many fewer atrocities from long lines than I do
from weird line-wraps and from variable names that have been over-shortened to
make the line fit in 80 characters. To avoid these issues, my clients
typically set their line limits at 90 or 100 (though I have one customer that
keeps 80 characters but uses two-space indents, yuck).
PEP 8 is mostly about readability. However, the line length limit often seems
to cause less readable code.
Raymond
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