On Feb 24, 2014, at 8:30 PM, Ronaldo <abhishek1...@gmail.com> wrote:
> How do I write a state machine in python? I have identified the states and > the conditions. Is it possible to do simple a if-then-else sort of an > algorithm? Below is some pseudo code: > > if state == "ABC": > do_something() > change state to DEF > > if state == "DEF" > perform_the_next_function() > ... > > I have a class to which certain values are passed from a GUI and the > functions above have to make use of those variables. How do I go about doing > this? I have the following algorithm: > > class TestClass(): > def __init__(self, var1, var2): #var1 and var2 are received from a GUI > self.var1 = var1 > ... > if state == "ABC" > doSomething(var1, var2) > .. > > Could someone point me in the right direction? Thank you! > > -- > https://mail.python.org/mailman/listinfo/python-list And, to extend Tim's suggestion of a dictionary just a bit, note that since Python functions are happy to pass function names as arguments, you can use a dictionary to make a really nice compact dispatch table. That is, function A does its thing, gets to a new state, and returns as one of its return arguments the key into the dictionary that points to the next function_name to be called based on that new state. Stackoverflow has a couple of compact examples here: http://stackoverflow.com/questions/715457/how-do-you-implement-a-dispatch-table-in-your-language-of-choice Bill -- https://mail.python.org/mailman/listinfo/python-list
