I don't think this will fly - if not for any other reason, it is a very rare pattern 

to take place alongside such important flow-control statements as continue and break

But for your convenience, here is a small wrapper that, along with the 

walrus operator, could be used when you need that functionality:

```

class Repeatable:
    def __init__(self, it):
        self.it = it
        self.repeat_last = False
        self.last_item = None
    def repeat(self):
        self.repeat_last = True
    def __iter__(self):
        for item in self.it:
            while self.repeat_last:
                self.repeat_last = False
                yield self.last_item
            self.last_item = item
            yield item


test = 1
for x in (rx:=Repeatable(range(3))):
    print(x)
    if x == test:
        test = -1
        rx.repeat()

```

On Thu, Jan 26, 2023 at 4:41 PM Thomas Ratzke <thomasratzketr@outlook.de> wrote:

Hi all,

i would like to suggest the following Python feature. It naturally
happens that one want's to repeat the current iteration of a for loop
for example after an error happened. For this purpose, I usually set a
flag and put a while loop inside my for loop. A simple "repeat"
statement just like "continue" or "break" would make the code much more
readable.


This is my solution at the moment with A being checked:

for _ in range(n):
     flag = True
     while flag:
         ...
         if A:
             flag = False # go to next iteration


I would suggest the repeat statement in the following sense

for _ in range(n):
     ...
     if not A:
         repeat # repeat current iteration

Notice the "not" in the if clause. I am really looking forwars to hear
your opinions.

Best regards
Thomas

_______________________________________________
Python-Dev mailing list -- python-dev@python.org
To unsubscribe send an email to python-dev-leave@python.org
https://mail.python.org/mailman3/lists/python-dev.python.org/
Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/LNER4MH6IT6HBFKFVTUOJ225PTCZSRRC/
Code of Conduct: http://python.org/psf/codeofconduct/

_______________________________________________
Python-Dev mailing list -- python-dev@python.org
To unsubscribe send an email to python-dev-leave@python.org
https://mail.python.org/mailman3/lists/python-dev.python.org/
Message archived at https://mail.python.org/archives/list/python-dev@python.org/message/WWEJQD7IIPNC4FUSPHLXEH7SVN6EVK6H/
Code of Conduct: http://python.org/psf/codeofconduct/