(obj, path)
return val
Get value from walking key path with start object obj.
Get value from walking key path with start object obj.
Get value from walking key path with start object obj .
def value_for_keypath(obj, path):
    """Get value from walking key path with start object obj.
    """
    val = obj
    for part in path.split('.'):
        match = re.match(list_index_re, part)
        if match is not None:
            val = _extract(val, match.group(1))
            if not isinstance(val, list) and not isinstance(val, tuple):
                raise TypeError('expected list/tuple')
            index = int(match.group(2))
            val = val[index]
        else:
            val = _extract(val, part)
        if val is None:
            return None
    return val
def value_for_keypath ( obj , path ) : val = obj for part in path . split ( '.' ) : match = re . match ( list_index_re , part ) if match is not None : val = _extract ( val , match . group ( 1 ) ) if not isinstance ( val , list ) and not isinstance ( val , tuple ) : raise TypeError ( 'expected list/tuple' ) index = int ( match . group ( 2 ) ) val = val [ index ] else : val = _extract ( val , part ) if val is None : return None return val