On 01/02/2013 08:39 AM, Steven D'Aprano wrote:
On Wed, 02 Jan 2013 00:49:36 +0100, someone wrote:
What does this mean? Why does it say 'format" cannot be deleted after I
did the wildcard import ?
It means that there is no "format" in the current scope, which implies
that pygame no longer has a "format" which can be imported.
You don't need an import to shadow built-ins. See for example:
py> format
<built-in function format>
py> format = "NOBODY expects the Spanish Inquisition!"
py> format # this shadows the built-in "format"
'NOBODY expects the Spanish Inquisition!'
py> del format # get rid of the Spanish Inquisition
py> format
<built-in function format>
py> del format
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'format' is not defined
Ok, thank you very much - that was/is very illustrative...
When a name is not discovered in the current scope, the builtin scope is
checked before Python gives up and reports a NameError. But del only
works on the current scope, to stop you from accidentally deleting the
wrong object.
Ok, I'll remember that in the future, thank you.
> pylint may still complain, but you can ignore it. By deleting the
> name "format", that will unshadow the builtin format.
Are you sure?
Since it turns out that pylint was actually wrong to complain, no format
was actually imported, then yes you can safely ignore it :-)
Ok, I can see from your example that you're right. Nice to know the real
explanation, thank you very much. :-)
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