On Jun 7, 12:47 am, Lenin <[email protected]> wrote:
> Alec: It seems :py vim.command('return 1') will throw an error that says
> "return not inside a function".
>
> Marcin: Yes, I am using vim variables to transfer values from python
> functions currently, but I think this method is ugly, I'd like to know a
> better solution.
It may be ugly but it's perfectly serviceable. It can also be tricky
because the exact syntax depends on the type of value being
transfered.
For strings
:py vim.command("let g:vim_var='%s'" %python_var.replace("'", "''"))
For integers, simple dictionaries and lists:
:py vim.command("let g:vim_var=%s" %python_var)
:py vim.command("let g:vim_var=%s" %({'a':1,'b':2}))
With strings, backslashes and quotes need to be taken care of. The
easiest is to use single quotes in Vim assignment and double all
single quotes in strings. Example:
python << EOF
import vim
def py_func(): return """a'b"c\nd\t\\e"""
EOF
py print repr(py_func())
py vim.command("let g:py_var='%s'" %py_func().replace("'", "''"))
echo g:py_var
Script-local or function-local variable can be used to avoid polluting
Vim's global namespace. Python function can create Vim function-local
var when it is called from Vim function. That is, inside a Python
function:
vim.command("let l:result='%s'" %result.replace("'", "''"))
I don't think there is better solution.
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