Python in a Nutshell

Name

isbuiltin,isclass,iscode, isframe, isfunction, ismethod, ismodule, isroutine

Synopsis

isbuiltin(obj)

Each of these functions accepts a single argument obj and returns True if obj belongs to the type indicated in the function name. Accepted objects are, respectively: built-in (C-coded) functions, class objects, code objects, frame objects, Python-coded functions (including lambda expressions), methods, modules, and, for isroutine, all methods or functions, either C-coded or Python-coded. These functions are often used as the filter argument to getmembers.