Hello all,
I have written a simple whiteboard application. In my application, I
want to be able to set draw attributes. This part works. I have a
dictionary object which contains stuff like:
self.attr['Pen.Color'] = ...
self.attr['Pen.Thickness'] = ...
Now, the problem is that I want to be able to store attributes in a
list so they'll be easily accessed using the function keys. I.e. I have
the "current attributes" which I want to be able to store or retrieve
in/from a list,
The problem is that I have initialized the list like this:
self.drawAttr = { blah, blah, blah.. }
self.storedAttr = [ ]
for i in range(0, 10):
self.storedAttr.append(self.drawAttr)
I know what the problem is; they are all referencing the *same*
dictionary object. So, my question is: How do I initialize a list of
dictionary objects, where each list entry is its own object (which is a
copy from the self.drawAttr object).
Also, how do I store/restore entries to the list?
I have found the "copy" module, and it's copy method. I assume this
would work:
for i in range(0, 10):
self.storedAttr.append(copy.copy(self.drawAttr))
However, the concept of "deep copy" confuses me. Do I want it, or
don't I want it? I repeat: the attributes object is a simple dictionary.
Thankful for any advice.
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