import sys
import types

def call_with_sig_error(callable, *args, **kw):
    try:
        return callable(*args, **kw)
    except:
        exc_info = sys.exc_info()
        exc_info = annotate_signature_error(exc_info, callable, args, kw)
        raise exc_info[0], exc_info[1], exc_info[2]

def annotate_signature_error(exc_info, callable, args, kwargs):
    if (exc_info[0] != TypeError
        or str(exc_info[1]).find('argument') == -1):
        return exc_info
    import inspect
    argspec = inspect.formatargspec(*inspect.getargspec(callable))
    args = ', '.join(map(repr, args))
    if kwargs and args:
        args += ', '
    args += ', '.join(['%s=%r' % (n, v) for n, v in kwargs.items()])
    gotspec = '(%s)' % args
    msg = '%s; got %s, wanted %s' % (exc_info[1], gotspec, argspec)
    exc_info[1].args = (msg,)
    return exc_info