ref: d54c7c9f6328bd1da9fef69ba4b2dcde741fc872
dir: /sys/src/cmd/python/Tools/compiler/demo.py/
#! /usr/bin/env python
"""Print names of all methods defined in module
This script demonstrates use of the visitor interface of the compiler
package.
"""
import compiler
class MethodFinder:
    """Print the names of all the methods
    Each visit method takes two arguments, the node and its current
    scope.  The scope is the name of the current class or None.
    """
    def visitClass(self, node, scope=None):
        self.visit(node.code, node.name)
    def visitFunction(self, node, scope=None):
        if scope is not None:
            print "%s.%s" % (scope, node.name)
        self.visit(node.code, None)
def main(files):
    mf = MethodFinder()
    for file in files:
        f = open(file)
        buf = f.read()
        f.close()
        ast = compiler.parse(buf)
        compiler.walk(ast, mf)
if __name__ == "__main__":
    import sys
    main(sys.argv[1:])