Make our fixed-up getargspec a top-level function.

There was no need for this to be a method, and this way it can be used by
external code.

IPython/OInspect.py

@@ -24,13 +24,14 b" __all__ = ['Inspector','InspectColors']"
 
 # stdlib modules
 import __builtin__
+import StringIO
 import inspect
 import linecache
-import string
-import StringIO
-import types
 import os
+import string
 import sys
+import types
+
 # IPython's own
 from IPython import PyColorize
 from IPython.genutils import page,indent,Term
@@ -136,6 +137,7 b' def getdoc(obj):'
             ds = '%s\n%s' % (ds,ds2)
     return ds
 
+
 def getsource(obj,is_binary=False):
     """Wrapper around inspect.getsource.
 
@@ -162,26 +164,7 b' def getsource(obj,is_binary=False):'
                 src = inspect.getsource(obj.__class__)
         return src
 
-#****************************************************************************
-# Class definitions
-
-class myStringIO(StringIO.StringIO):
-    """Adds a writeln method to normal StringIO."""
-    def writeln(self,*arg,**kw):
-        """Does a write() and then a write('\n')"""
-        self.write(*arg,**kw)
-        self.write('\n')
-
-class Inspector:
-    def __init__(self,color_table,code_color_table,scheme,
-                 str_detail_level=0):
-        self.color_table = color_table
-        self.parser = PyColorize.Parser(code_color_table,out='str')
-        self.format = self.parser.format
-        self.str_detail_level = str_detail_level
-        self.set_active_scheme(scheme)
-
-    def __getargspec(self,obj):
+def getargspec(obj):
         """Get the names and default values of a function's arguments.
 
         A tuple of four things is returned: (args, varargs, varkw, defaults).
@@ -201,6 +184,26 b' class Inspector:'
         args, varargs, varkw = inspect.getargs(func_obj.func_code)
         return args, varargs, varkw, func_obj.func_defaults
 
+#****************************************************************************
+# Class definitions
+
+class myStringIO(StringIO.StringIO):
+    """Adds a writeln method to normal StringIO."""
+    def writeln(self,*arg,**kw):
+        """Does a write() and then a write('\n')"""
+        self.write(*arg,**kw)
+        self.write('\n')
+
+
+class Inspector:
+    def __init__(self,color_table,code_color_table,scheme,
+                 str_detail_level=0):
+        self.color_table = color_table
+        self.parser = PyColorize.Parser(code_color_table,out='str')
+        self.format = self.parser.format
+        self.str_detail_level = str_detail_level
+        self.set_active_scheme(scheme)
+
     def __getdef(self,obj,oname=''):
         """Return the definition header for any callable object.
 
@@ -208,7 +211,7 b' class Inspector:'
         exception is suppressed."""
         
         try:
-            return oname + inspect.formatargspec(*self.__getargspec(obj))
+            return oname + inspect.formatargspec(*getargspec(obj))
         except:
             return None