ref: cdb9de94c4e4d40a84c77f1042d60e27103cf1b7
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:])