> # Handle a matched regex
> if (match := pattern.search(data)) is not None:
> ...
>
> # A more explicit alternative to the 2-arg form of iter() invocation
> while (value := read_next_item()) is not None:
> ...
>
> # Share a subexpression between a comprehension filter clause and its
> output
> filtered_data = [y for x in data if (y := f(x)) is not None]
What do you think of adding the variant without the new ":=" syntax?
It would help to see the benefit of the new ":=" syntax, and help to
compare the two syntaxes.
if:
if (match := pattern.search(data)) is not None: ...
vs
match = pattern.search(data)
if match is not None: ...
while:
while (value := read_next_item()) is not None: ...
vs
while True:
value = read_next_item()
if value is None: break
...
list-comprehension:
filtered_data = [y for x in data if (y := f(x)) is not None]
vs
filtered_data = [f(x) for x in data]
filtered_data = [x for x in filtered_data if x is not None]
Victor
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