[Python-bugs-list] [ python-Bugs-672578 ] pydoc does not cope well with lambda

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Bugs item #672578, was opened at 2003-01-22 12:29
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=672578&group_id=5470

Category: Demos and Tools
Group: Python 2.2.1
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Jim Meyer (purp)
Assigned to: Nobody/Anonymous (nobody)
Summary: pydoc does not cope well with lambda

Initial Comment:
pydoc doesn't deal well with lambda expressions. Here's
some sample code:
================================================================
#!/usr/bin/env python2
"""a bogus program

Demonstrate that pydoc doesn't handle lambdas well
"""

#
--------------------------------------------------------------------
# A comment heading
#
--------------------------------------------------------------------
def foo (optional = 1) :
	''' A bogus function '''
	return optional

bar = lambda opt : foo(opt)
================================================================

...and here's what pydoc says:

================================================================
> pydoc /tmp/foo.py
Python Library Documentation: module foo

NAME
    foo - a bogus program

FILE
    /tmp/foo.py

DESCRIPTION
    Demonstrate that pydoc doesn't handle lambdas well

FUNCTIONS
    lambdaopt
        #
--------------------------------------------------------------------
        # A comment heading
        #
--------------------------------------------------------------------
    
    foo(optional=1)
         A bogus function

DATA
    __file__ = '/tmp/foo.pyc'
    __name__ = 'foo'

================================================================

I'm looking for the cause now and hope to contribute a
patch shortly.

--j

----------------------------------------------------------------------

>Comment By: Raymond Hettinger (rhettinger)
Date: 2003-01-22 20:55

Message:
Logged In: YES 
user_id=80475

The underlying cause is that the inspect module was not 
trained to handle lambdas or single line function defintions 
like:

def oneliner(x): return x**2

The problem was fixed in Py2.3 and backported for 
Py2.2.3.

Marking as fixed and closing.

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=105470&aid=672578&group_id=5470