[Python-Dev] Re: [Python-checkins] python/dist/src/Lib types.py,1.26,1.27 (original) (raw)

Thomas Heller thomas.heller@ion-tof.com
Fri, 24 May 2002 20:04:43 +0200

Testing for inclusion in a set of types is a little less straightforward if you are concerned about possible subclassing. Currently, to see if an object is a number you would write

if type(o) in (IntType, FloatType, ComplexType): ... That would be converted to if type(o) in (int, float, complex): ... or if (isinstance(o, int) or isinstance(o, float) or isinstance(o, complex)): ... The last case is decidedly cumbersome. or if isinstance(o, (int, float, complex)):

Thomas