Package: vim-bridge
What is it?vim_bridgeis a Python-to-Vim bridge decorator that allows transparent calls
to Python functions in native Vim scripts.InstallationSimply install thevim_bridgePython package, using setuptools,easy_install, orpip.UsageIn a Vim script, decorate your Python functions as follows to expose them as
native Vim callables.  Both arguments and return values are casted so it should
be transparent:python << endpython
from vim_bridge import bridged

@bridged
def SayHello(first, last):
    return "Hello, %s %s!" % (first, last)

endpython

" Now call directly into the Python function!
echo SayHello("John", "Doe")
           " prints "Hello, John Doe!"SupportedThe following data types have proven to work:StringsIntegersListsExceptionsMore examplesPassing in a list:python << endpython
from vim_bridge import bridged

@bridged
def GetLongest(list):
    return max(map(lambda s: len(s), list))

endpython

echo GetLongest(['one', 'two', 'three', 'four'])
            " returns 5 (because "three" is 5 chars long)Catching exceptions:python << endpython
from vim_bridge import bridged

@bridged
def WillCauseException():
    raise Exception("Oops")

endpython

" This will throw an error to the user...
echo WillCauseException()

" But here's how you can catch that in Vim
try
    echo WillCauseException()
catch
    echo "Something went wrong. Aborting."
finally
    echo "Cleaning up."
endtryUsing Python stdlib functions to do work that would be more difficult using
pure Vim scripting:python << END
import os.path
from vim_bridge import bridged

@bridged
def NormalizePath(path):
    return os.path.realpath(path)
END

echo NormalizePath("/this/../or/./.././that/is/./a/.//very/../obscure/..//././long/./../path/name")
echo NormalizePath("..")You can use the bridged function definitions within a Python block itself, or
from inside Vim, it does not matter.  In this example, NormalizePath is called
from both Python and Vim:python << END
import os.path
from vim_bridge import bridged

@bridged
def NormalizePath(path):
    return os.path.realpath(path)

@bridged
def RealPath(path):
    # It does not matter if you call NormalizePath from here...
    return NormalizePath(path)
END

" ...or from here
echo NormalizePath("/this/../or/./.././that/is/./a/.//very/../obscure/..//././long/./../path/name")
echo RealPath("..")Since vim_bridge 0.4, the function name casing convention is automatically
converted to match Vim’s conventions (andrequirementeven, since function
namesmuststart with a capital letter).  Besides casing, prefixing the
Python function with an underscore will lead to the function being defined in
the Vim context as a<SID>-prefixed function (i.e. a “private” function
that cannot be called from outside the script):python << eop
import os
import vim
from vim_bridge import bridged

@bridged
def public():
    return "I am public."

@bridged
def _private():
    return "I am private (available in the current script only)."

@bridged
def my_name_is_auto_converted():
    return "In Python, I'm called my_name_is_auto_converted, " + \
           "but in Vim, I'm called MyNameIsAutoConverted :)"

@bridged
def _long_private_name():
    return "I'm private, and my case is converted automatically."
eop

echo Public()
echo s:Private()
echo MyNameIsAutoConverted()
echo s:LongPrivateName()