Re: Coding style

PTY wrote:

It looks like there are two crowds, terse and verbose. I thought terse
is perl style and verbose is python style. BTW, lst = [] was not what
I was interested in :-) I was asking whether it was better style to
use len() or not.

It's not canonical Python to use len() in this case. From PEP 8:

- For sequences, (strings, lists, tuples), use the fact that empty
sequences are false.

Yes: if not seq:
if seq:

No: if len(seq)
if not len(seq)

The whole reason that a sequence supports testing is exactly for this
scenario. This is not an afterthought -- it's a fundamental design
decision of the language.

Regards,
Pat

.

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