Hello Arnaud, > Imagine I have three functions a(x), b(x), c(x) that each return > something or raise an exception. Imagine I want to define a function > that returns a(x) if possible, otherwise b(x), otherwise c(x), > otherwise raise CantDoIt. Exceptions are for error handling, not flow control.
> Here are three ways I can think of doing it: > ... > # This one only works because a,b,c are functions > # Moreover it seems like an abuse of a loop construct to me > def rolled_first(x): > for f in a, b, c: > try: > return f(x) > except: > continue > raise CantDoIt My vote is for that one. > I don't feel happy with any of these. Is there a more satisfying way > of doing this in Python? What I would like is something like: > > ---------- > # This one isn't correct but looks the clearest to me > def wished_first(x): > try: > return a(x) > except: > return b(x) > except: > return c(x) > except: > raise CantDoIt Again, exception are for error handling, not for flow control. As a side note, try to avoid "catch:", always catch explicit exceptions. HTH, Miki <[EMAIL PROTECTED]> http://pythonwise.blogspot.com -- http://mail.python.org/mailman/listinfo/python-list
