<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def pprint(obj, file_=None):
 """Prints debug information for various public objects like methods, functions, constructors etc. """


    if file_ is None:
        file_ = sys.stdout

    # functions, methods
    if callable(obj) and hasattr(obj, "_code"):
        obj._code.pprint(file_)
        return

    # classes
    if isinstance(obj, type) and hasattr(obj, "_constructors"):
        constructors = obj._constructors
        for names, func in sorted(constructors.items()):
            func._code.pprint(file_)
        return

    raise TypeError("unkown type")