New submission from James Hutchison jamesghutchi...@gmail.com:
In python is currently there a way to elegantly throw an error if a variable is
already in the current scope?
For example:
def longfunc(self, filename):
FILE = open(filename);
header = FILE.readline();
... bunch of
Eric Snow ericsnowcurren...@gmail.com added the comment:
Interesting thought, the syntax seems unnecessary. Adding new syntax to the
language is something that happens rarely and only with a _lot_ of
consideration.
As a slightly more verbose alternative, currently you can do this:
def
Benjamin Peterson benja...@python.org added the comment:
I think this more the domain of pylint/pyflakes.
--
nosy: +benjamin.peterson
resolution: - rejected
status: open - closed
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Python tracker rep...@bugs.python.org
James Hutchison jamesghutchi...@gmail.com added the comment:
For starters, this would be most efficient implementation:
def unique(varname, value, scope):
assert(not varname in scope);
scope[varname] = value;
Usage:
unique('b', 1, locals());
print(b);
But you can't put that in a loop
Benjamin Peterson benja...@python.org added the comment:
I suggest you mail python-ideas.
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Python tracker rep...@bugs.python.org
http://bugs.python.org/issue13678
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