[John J Lee]
> But it's a very readable way to write a common operation. Perhaps one
> reason the discrepancy you point out doesn't bother me is that
> division is the least-used of the +-*/ arithmetic operations.
[Tony Meyer]
>
> Do you have evidence to back that up?
No. :)
[Ian Bicking]
> of mine, and in 12k lines there were 34 uses of join, and 1 use of
> division. In smaller scripts os.path.join tends to show up a lot more
[Tony]
> The problem with these sorts of guesses is that there's no evidence.
> (Maybe the suggestion that Brett's PhD should collect a corpus of
> Python scripts was a good one <wink>). Are mathematicians that under
> represented? Is file processing that highly represented? I have no
> idea.
A second data point: I looked at ~10k lines of physical data analysis code
I have lying around -- presumably a relatively rare and extreme example as
the Python-world in general goes. Result:
140 occurences of os.path.join
170 physical lines (as opposed to syntactical lines) containing / as a
division operator (very few lines contained > 1 use of '/', so you
can multiply 170 by 1.25 to get an upper bound of 213 uses in total)
(To get the second number, I used find and grep heavily but very
cautiously, and final manual count of stubborn lines of grep output with
no use of '/' as division operator)
The fact that even in this extreme case os.path.join is close on the tail
of '/' strongly backs up Ian's guess that, in most Python code, / as
division is rare compared to path joining.
Should we deprecate use of '/' and '//' for division in Python 3.0?
is-he-joking?-ly y'rs
John
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