old_contents: #!/usr/bin/env python
  #
  # Copyright 2007 Neal Norwitz
  # Portions Copyright 2007 Google Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """Find and print the functions in a source file."""
  
  import sys
  
  from cpp import ast
  
  
  def main(argv):
      # TODO(nnorwitz): need to ignore friend method declarations.
      condition = lambda node: isinstance(node, ast.Function)
      ast.PrintAllIndentifiers(argv[1:], condition)
  
  
  if __name__ == '__main__':
      main(sys.argv)
  
new_contents: #!/usr/bin/env python
  #
  # Copyright 2007 Neal Norwitz
  # Portions Copyright 2007 Google Inc.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """Find and print the functions in a source file."""
  
  import sys
  
  from cpp import ast
  
  
  def main(argv):
      # TODO(nnorwitz): need to ignore friend method declarations.
      IsFunction = lambda node: isinstance(node, ast.Function)
      ast.PrintAllIndentifiers(argv[1:], IsFunction)
  
  
  if __name__ == '__main__':
      main(sys.argv)
  
subject: Use a better function (lambda) name