Here's how I implement intellisense in Python. This is very easy for an
interactive command line, and a bit trickier for an editor. The code was
gleaned from an Idle implementation, and I haven't changed it in years. It
works fine with both CPython and IronPython, returning both the stdlib and
.NET methods in IronPython.
(This is greatly simplified, but it's the general approach)
1. Load the functions _find_constructor() and get_arg_text() into Python -
see code below or refer to Idle source code.
2. When the user presses the period key, look to see if there's a valid
Python object directly preceding the period.
a. If a valid object is found, e.g. myobject, temporarily
redirect Python output to a string and call dir(myobject) on the object to
get a list of methods/properties.
b. Remove double underscore methods from the string, and
populate a list box with the methods.
c. Pop up the listbox in front of the period and let the user
select one via mouse or keystroke.
3. When the user presses the left-bracket, temporarily redirect Python
output to a string and call get_arg_text(object) on the object immediately
preceding the bracket.
a. If text is returned, display it in a tooltip window.
HTH
-------------- Python code below ----------------------
def _find_constructor(class_ob):
# Given a class object, return a function object used for the
# constructor (ie, __init__() ) or None if we can't find one.
try:
return class_ob.__init__.im_func
except AttributeError:
for base in class_ob.__bases__:
rc = _find_constructor(base)
if rc is not None:
return rc
return None
def get_arg_text(ob):
import types
argText = ''
if ob is not None:
argOffset = 0
if type(ob)==types.ClassType:
fob = _find_constructor(ob)
if fob is None:
fob = lambda: None
else:
argOffset = 1
elif type(ob)==types.MethodType:
fob = ob.im_func
argOffset = 1
else:
fob = ob
# Try and build one for Python defined functions
if type(fob) in [types.FunctionType, types.LambdaType]:
try:
realArgs =
fob.func_code.co_varnames[argOffset:fob.func_code.co_argcount]
defaults = fob.func_defaults or []
defaults = list(map(lambda name: '=%s' % name, defaults))
defaults = [''] * (len(realArgs)-len(defaults)) + defaults
items = map(lambda arg, dflt: arg+dflt, realArgs, defaults)
if fob.func_code.co_flags & 0x4:
items.append('...')
if fob.func_code.co_flags & 0x8:
items.append('***')
argText = string.join(items , ', ')
argText = '(%s)' % argText
except:
pass
# See if we can use the docstring
doc = getattr(ob, '__doc__', '')
if doc:
while doc[:1] in ' \t\n':
doc = doc[1:]
pos = doc.find('\n')
if pos < 0 or pos > 70:
pos = 70
if argText:
argText += '\n'
argText += doc[:pos]
return argText
_____
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Blesson Varghese
Sent: Tuesday, November 28, 2006 1:58 AM
To: users@lists.ironpython.com
Subject: [IronPython] Do we have any option for Intellisense??
I want to write code to provide Intellisense to an IDE for Iron Python...Do
we have any options within the Python Engine to do that???
_____
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