Lib/lib-old/newdir.py

   1 # New dir() function
   2
   3
   4 # This should be the new dir(), except that it should still list
   5 # the current local name space by default
   6
   7 def listattrs(x):
   8         try:
   9                 dictkeys = x.__dict__.keys()
  10         except (AttributeError, TypeError):
  11                 dictkeys = []
  12         #
  13         try:
  14                 methods = x.__methods__
  15         except (AttributeError, TypeError):
  16                 methods = []
  17         #
  18         try:
  19                 members = x.__members__
  20         except (AttributeError, TypeError):
  21                 members = []
  22         #
  23         try:
  24                 the_class = x.__class__
  25         except (AttributeError, TypeError):
  26                 the_class = None
  27         #
  28         try:
  29                 bases = x.__bases__
  30         except (AttributeError, TypeError):
  31                 bases = ()
  32         #
  33         total = dictkeys + methods + members
  34         if the_class:
  35                 # It's a class instace; add the class's attributes
  36                 # that are functions (methods)...
  37                 class_attrs = listattrs(the_class)
  38                 class_methods = []
  39                 for name in class_attrs:
  40                         if is_function(getattr(the_class, name)):
  41                                 class_methods.append(name)
  42                 total = total + class_methods
  43         elif bases:
  44                 # It's a derived class; add the base class attributes
  45                 for base in bases:
  46                         base_attrs = listattrs(base)
  47                         total = total + base_attrs
  48         total.sort()
  49         return total
  50         i = 0
  51         while i+1 < len(total):
  52                 if total[i] == total[i+1]:
  53                         del total[i+1]
  54                 else:
  55                         i = i+1
  56         return total
  57
  58
  59 # Helper to recognize functions
  60
  61 def is_function(x):
  62         return type(x) == type(is_function)
  63
  64
  65 # Approximation of builtin dir(); but note that this lists the user's
  66 # variables by default, not the current local name space.
  67
  68 def dir(x = None):
  69         if x is not None:
  70                 return listattrs(x)
  71         else:
  72                 import __main__
  73                 return listattrs(__main__)