On 8/28/2013 4:57 AM, Piotr Dobrogost wrote: > Having repr(None) == 'None' is sure the right thing but why does str(None) == > 'None'? Wouldn't it be more correct if it was an empty string?
the point of str(obj) is to return a string containing the obj (a sequence of characters if it is unbound or not built-in, etc.)... If you set the rule str(None)=="", then you will cause plenty of problems. For instance, if you want to build a string like request="SELECT X"+"IN Y"+"WHERE B="+String(B) to prepare a sequel request, and the field B happens to be sometimes "None", you would automatically end up with """SELECT X IN Y WHERE B=''""" instead of """SELECT X IN Y WHERE B='None'""", and your sql request will fall into limbos... -- http://mail.python.org/mailman/listinfo/python-list
