On 11/26/19 9:24 AM, Erik Skultety wrote:
On Mon, Nov 25, 2019 at 05:17:54PM +0100, Michal Privoznik wrote:
On 11/25/19 4:58 PM, Erik Skultety wrote:
On Mon, Nov 25, 2019 at 04:37:36PM +0100, Peter Krempa wrote:
Commit d30a1ad0443 translated the symbol file checker from perl to
python by doing a literal translation in most cases. Unfortunately one
string formatting operation was not really translated into python
leaving users with non-helpful error:
'Symbol $1 is listed twice'
Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
scripts/check-symfile.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/check-symfile.py b/scripts/check-symfile.py
index 0c02591991..34396b8623 100755
--- a/scripts/check-symfile.py
+++ b/scripts/check-symfile.py
@@ -52,7 +52,7 @@ with open(symfile, "r") as fh:
line = line.strip(";")
if line in wantsyms:
- print("Symbol $1 is listed twice", file=sys.stderr)
+ print("Symbol %s is listed twice" % line ,file=sys.stderr)
Not a deal breaker, but IMO should at least the "new" syntax for string
formatting using the .format() method (works both with python 2 and 3).
Ideally, we'd move to python 3.6+ (since 2 will die in about 2 months) and
started using string interpolation (or f-strings if you want).
Well, looks like we are not using that anywhere. And frankly, f-strings are
horrible. This is the most readable style for us, C developers IMO.
Can you be more specific on what exactly is horrible about f-strings? IMO it's
actually very intuitive way of formatting strings unlike using the '%'
formatting sign where depending on whether you have 1 or multiple arguments you
may or may not need to use a tuple. F-strings are also a bit faster than the
other formatting methods and because they're evaluated during runtime, you can
evaluate arbitrary expressions, even call functions.
That's exactly what I find horrible. Just consider the following example:
print(f'a={f(x,n):d}, b={g(x,n):d}')
IMO the following is more readable:
print("a=%d, b=%d" % (f(x,n), g(x,n)))
Once again, I'm talking about C developers (me specifically). I don't
doubt that an experienced python developer finds f-strings a step forward.
Michal
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