timeout before removing scanned symbols

[petaflot]

I would like a user-defined timeout before scanned QR-codes is removed from the "symbols" list : when writing sth like [{"text": value.data.decode("utf8"), "popup": root} for value in zbarcam.symbols] in a .kv file, each symbol is displayed (just after recognition) in a button, but for a fraction of a second. users should be allowed to define a timeout before the item is removed from the list.

[tshirtman]

that can be done on the app side, adding new elements to a list immediately, but delaying their removal with a clock event (that can be cancelled if they are found again)

[petaflot]

I thought the whole point of having libs was not having to code the same snippets over and over again