old_contents: # Copyright (c) 2017, Arista Networks, Inc.
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are
  # met:
  #
  #   Redistributions of source code must retain the above copyright notice,
  #   this list of conditions and the following disclaimer.
  #
  #   Redistributions in binary form must reproduce the above copyright
  #   notice, this list of conditions and the following disclaimer in the
  #   documentation and/or other materials provided with the distribution.
  #
  #   Neither the name of Arista Networks nor the names of its
  #   contributors may be used to endorse or promote products derived from
  #   this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARISTA NETWORKS
  # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  # IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #
  
  __metaclass__ = type
  
  from netaddr import IPNetwork
  
  def network_address(net_addr):
      """ Converts a CIDR network address/mask string to a network address.
  
      Args:
          net_addr (str): a network address/mask string in
              the format A.B.C.D/E.
  
      Returns:
          str: The network address specified by the input net_addr.
      """
      ip = IPNetwork(net_addr)
      import XXX
      XXX.file("XXX")
      return(str(ip.network))
  
  class FilterModule(object):
  
      def filters(self):
          return {
              'network_address': network_address,
          }
  
new_contents: # Copyright (c) 2017, Arista Networks, Inc.
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  # modification, are permitted provided that the following conditions are
  # met:
  #
  #   Redistributions of source code must retain the above copyright notice,
  #   this list of conditions and the following disclaimer.
  #
  #   Redistributions in binary form must reproduce the above copyright
  #   notice, this list of conditions and the following disclaimer in the
  #   documentation and/or other materials provided with the distribution.
  #
  #   Neither the name of Arista Networks nor the names of its
  #   contributors may be used to endorse or promote products derived from
  #   this software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ARISTA NETWORKS
  # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
  # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  # IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #
  
  __metaclass__ = type
  
  from netaddr import IPNetwork
  
  def network_address(net_addr):
      """ Converts a CIDR network address/mask string to a network address.
  
      Args:
          net_addr (str): a network address/mask string in
              the format A.B.C.D/E.
  
      Returns:
          str: The network address specified by the input net_addr.
      """
      ip = IPNetwork(net_addr)
      return(str(ip.network))
  
  class FilterModule(object):
  
      def filters(self):
          return {
              'network_address': network_address,
          }
  
subject: Remove debugging code inadvertently left in place