cpython/Lib/lib-old/newdir.py

# New dir() function


# This should be the new dir(), except that it should still list
# the current local name space by default

def listattrs(x):
    try:
        dictkeys = x.__dict__.keys()
    except (AttributeError, TypeError):
        dictkeys = []
    #
    try:
        methods = x.__methods__
    except (AttributeError, TypeError):
        methods = []
    #
    try:
        members = x.__members__
    except (AttributeError, TypeError):
        members = []
    #
    try:
        the_class = x.__class__
    except (AttributeError, TypeError):
        the_class = None
    #
    try:
        bases = x.__bases__
    except (AttributeError, TypeError):
        bases = ()
    #
    total = dictkeys + methods + members
    if the_class:
        # It's a class instace; add the class's attributes
        # that are functions (methods)...
        class_attrs = listattrs(the_class)
        class_methods = []
        for name in class_attrs:
            if is_function(getattr(the_class, name)):
                class_methods.append(name)
        total = total + class_methods
    elif bases:
        # It's a derived class; add the base class attributes
        for base in bases:
            base_attrs = listattrs(base)
            total = total + base_attrs
    total.sort()
    return total
    i = 0
    while i+1 < len(total):
        if total[i] == total[i+1]:
            del total[i+1]
        else:
            i = i+1
    return total


# Helper to recognize functions

def is_function(x):
    return type(x) == type(is_function)


# Approximation of builtin dir(); but note that this lists the user's
# variables by default, not the current local name space.

def dir(x = None):
    if x is not None:
        return listattrs(x)
    else:
        import __main__
        return listattrs(__main__)