On Sun, Nov 13, 2022 at 4:45 PM DFS <nos...@dfs.com> wrote:
> In code, list.clear is just ignored.
> At the terminal, list.clear shows
> <built-in method clear of list object at 0x000001C9CFEC4240>
>
>
> in code:
> x = [1,2,3]
> x.clear
> print(len(x))
> 3
>
> at terminal:
> x = [1,2,3]
> x.clear
> <built-in method clear of list object at 0x000001C9CFEC4240>
> print(len(x))
> 3
>
>
> Caused me an hour of frustration before I noticed list.clear() was what
> I needed.
>
> x = [1,2,3]
> x.clear()
> print(len(x))
> 0
>
> --
> https://mail.python.org/mailman/listinfo/python-list
I'm not 100% sanguine about properties, but the fact is they are part of
the language:
$ cat p
below cmd output started 2022 Fri Nov 25 07:54:42 AM PST
#!/usr/bin/env python3
class P:
def __init__(self):
self.count = 0
@property
def increment(self):
self.count += 1
def result(self):
return self.count
p = P()
p.increment
p.increment
print(p.result())
above cmd output done 2022 Fri Nov 25 07:54:42 AM PST
dstromberg@tp-mini-c:~/src/experiments/property x86_64-pc-linux-gnu 2670
$ ./p
below cmd output started 2022 Fri Nov 25 07:54:44 AM PST
2
As you can see, if the interpreter refused to do something with p.increment
because it has no parens, the meaning of this code would change
significantly.
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