Gary Herron said unto the world upon 30/12/05 08:03 PM: > newbie wrote: > > >>Hello, >> >>I have questions about global variables in OOP (in general) and Python >>(in specific). I understand (I think) that global variables are >>generally not a good idea. However, if there are variables that need to >>be accessed by a number of classes that exists in separate namespaces >>(files), what would be the best way to do this? >> >>So far, I have approached the problem by making the variables >>attributes of one class and passing instances of the class as variables >>to the other class' methods. >> >>The other way I thought of is to create a separate class that consists >>of the variables and to use the >> > >>from <file name> import * > >> >> > > That form is deprecated. Better (and certainly clearer to any reader of > the code) is to leave them in the module. > > Define a module, say Parameters, that defines any number of variables > containing useful values. Then > import Parameters > wherever you want and refer to > Parameters.a > and > Parameters.b
<snip> An other variant seems rarely to come up. import Parameters as P provides almost all the brevity of the * variant and none of the dangers. Best to all, Brian vdB -- http://mail.python.org/mailman/listinfo/python-list
