#!/usr/bin/python
# -*- coding: utf-8 -*-
#
# progressbar  - Text progress bar library for Python.
# Copyright (c) 2005 Nilton Volpato
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

"""Compatibility methods and classes for the progressbar module."""


# Python 3.x (and backports) use a modified iterator syntax
# This will allow 2.x to behave with 3.x iterators
try:
  next
except NameError:
    def next(iter):
        try:
            # Try new style iterators
            return iter.__next__()
        except AttributeError:
            # Fallback in case of a "native" iterator
            return iter.next()


# Python < 2.5 does not have "any"
try:
  any
except NameError:
   def any(iterator):
      for item in iterator:
         if item: return True
      return False