zoukankan      html  css  js  c++  java
  • 杂记(python)

    class Pizza(object):
      def __init__(self, radius, height):
        self.radius = radius
        self.height = height
      @staticmethod
      def compute_area(radius):
        return math.pi * (radius**2)
      @classmethod
      def compute_volume(cls, height, radius):
        return height * cls.compute_area(radius)
      def get_volume(self):
        return self.compute_volume(self.height, self.radius)

    yield (生产者&消费者模型)

    def consumer():
        r = ''
        while True:
            n = yield r
            if not n:
                return
            print ('[CONSUME] Consuming %s...' %n)
    def produce(c):
        c.send(None)
        n = 0
        while n<5:
            n = n + 1
            print ('[PRODUCER] Producting %s...' %n)
            r = c.send(n)
            print ('[PRODUCER] Consumer return: %s' %r)
        c.close
    c = consumer()
    produce(c)

    __getattr__ 链式调用

    class Chain(object):
        def __init__(self, path = ''):
            self._path = path
        def __getattr__(self, path):
            return Chain('%s%s' %(self._path, path))
        def __str__(self):
            return self._path
        __repr__ = __str__
  • 相关阅读:
    c++ ::和:
    c++ extern
    c++ cpp和hpp
    c++ include
    caffe调试
    caffe blob理解
    poj3126
    FFmpeg滤镜使用指南
    Android之Activity之间传递对象
    Server Tomcat v8.0 Server at localhost failed to start.
  • 原文地址:https://www.cnblogs.com/stevenzeng/p/5241796.html
Copyright © 2011-2022 走看看