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Python 3: UnboundLocalError: local variable referenced before assignment [duplicate]
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@user7344209 Indeed. Answers should ideally explain what's happening in the actual example shown, and how to fix that, rather than suggesting a whole different approach.
– Stephen Holt
Sep 19 '18 at 20:58
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Lisp in the real world
...re almost every time following distinctive and not-so-average technologies/ideas.
– Luka Ramishvili
Feb 20 '12 at 8:08
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How to call an external command?
...executable, "longtask.py"]) # Call subprocess
# Some more code here
The idea here is that you do not want to wait in the line 'call subprocess' until the longtask.py is finished. But it is not clear what happens after the line 'some more code here' from the example.
My target platform was FreeBS...
Sockets: Discover port availability using Java
...g nginx on TCP 8000 whilst the above routine reports 8000 as available. No idea why -- I suspect nginx does some sneaky stuff (this is on OS X). Workaround for me is to do the above and also to open a new Socket("localhost", port) then return false if we don't get an exception. Thoughts?
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What is the Windows equivalent of the diff command?
...windows works if I have something like "abd" and "abc". Not otherwise. Any ideas what I can use for this?
13 Answers
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How are Anonymous inner classes used in Java?
...unction, e.g., as a listener, as a runnable (to spawn a thread), etc.
The idea is that you call them from inside the code of a function so you never refer to them elsewhere, so you don't need to name them. The compiler just enumerates them.
They are essentially syntactic sugar, and should generall...
Please explain the exec() function and its family
...grams. A process is an environment in which a program executes.
The simple idea behind the UNIX "execution model" is that there are two operations you can do.
The first is to fork(), which creates a brand new process containing a duplicate (mostly) of the current program, including its state. There ...
TSQL Pivot without aggregate function
...ten this without an editor & have not run the SQL. I hope, you get the idea.
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Force DOM redraw/refresh on Chrome/Mac
...great thanks! It worked. It's 2020, and this hack is from January '15. Any idea why this issue has not been fixed?
– Kai
yesterday
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Is there auto type inferring in Java?
... or computing hashCodes, or collecting class names, or... you got the idea ;) The list is short, though. See Object class' docs (comment meant for beginners, I'm sure you knew it SimonC)
– Alexander Malakhov
Jul 12 '13 at 4:18
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