pydoc an run python snippets integration problems

Hello.
I am using a set of scripts to integrate Python in VIM done by Kirill
Klenov know as Python mode Klen:
http://www.vim.org/scripts/script.php?script_id=3770

I am having trouble with pydoc and run python code.
For pydoc it uses the next funtion to open a scratch buffer with the
output of the help() pythom command:
fun! pymode#doc#Show(word) "{{{
if a:word == ''
echoerr "No name/symbol under cursor!"
else
py import StringIO
py sys.stdout, _ = StringIO.StringIO(), sys.stdout
py help(vim.eval('a:word'))
py sys.stdout, out = _, sys.stdout.getvalue()
call pymode#TempBuffer()
py vim.current.buffer.append(out.split('\n'), 0)
wincmd p
endif
endfunction "}}}

When running it I got these errors:
Error detected while processing function pymode#doc#Show:
line 9:
Traceback (most recent call last):
File "<string>", line 1, in <module>
TypeError: bad argument type for built-in operation
Error detected while processing function pymode#doc#Show:
line 9:
Traceback (most recent call last):
File "<string>", line 1, in <module>
TypeError: bad argument type for built-in operation

I have been looking the docs in vim about buffer methods in python,
and the code using the append() method looks correct.
I think the out variable is causing the error, but I dont know why.

The other issue is related to the function that runs a snippet of code
and returns a scratch buffer with the output.
I have this simple python file:
import os

def main():
print 'Test run'

if __name__ == '__main__':
main()

The function to run a buffer is the next:
fun! pymode#run#Run(line1, line2) "{{{
if &modifiable && &modified | write | endif
py import StringIO
py sys.stdout, _ = StringIO.StringIO(), sys.stdout
py execfile(vim.eval('expand("%s:p")'), {}, {})
py sys.stdout, out = _, sys.stdout.getvalue()
call pymode#TempBuffer()
py vim.current.buffer.append(out.split('\n'), 0)
wincmd p
endfunction "}}}

Then there is a command mapped to this function:
command! -buffer -nargs=0 -range=% Pyrun call
pymode#run#Run(<f-line1>, <f-line2>)

Well, if I execute this function it opens a scratch buffer but the
output is empty, which is wrong it should be showing the 'Tst run'
string.
I wonder if it is the same problem as in the previous case, because
both of them use the append() method, and how the out variable get
it's output is pretty much the same.

I am using vim 7.3 wirh Python 2.6.

Thanks!



--
Un saludo
Best Regards
Pablo Giménez

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