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  • Python-生成器_36

    #生成器函数

    def generator():
        print(1)
        return 'a'
    
    ret = generator()
    print(ret)
    
    #只要含有yield关键字的函数都是生成器函数
    # yield不能和return共用且需要写在函数内
    def generator():
        print(1)
        yield 'a'
    # #生成器函数 : 执行之后会得到一个生成器作为返回值
    ret = generator()
    print(ret)
    print(ret.__next__())
    
    
    #<generator object generator at 0x0000021E4A067570>
    #1
    #a

    def generator():
        print(1)
        yield 'a'
        print(2)
        yield 'b'
        yield 'c'
    g = generator()
    
    
    
    # for i in g:
    #     print(i)
    ret = g.__next__()
    print(ret)
    ret = g.__next__()
    print(ret)
    ret = g.__next__()
    print(ret)
    #娃哈哈%i
    def wahaha():
        for i in range(200):
            yield '娃哈哈%s'%i
    g = wahaha()
    for i in g:
        print(i)
    g1 = wahaha()
    print('*******',g.__next__())
    def wahaha():
        for i in range(200):
            yield '娃哈哈%s'%i
    
    g = wahaha()
    g1 = wahaha()
    
    print(g.__next__())
    print(g1.__next__())


    #娃哈哈0
    #娃哈哈0
    l = [1,2,3,4,5]
    for i in l:
        print(i)
        if i == 2:
            break
    
    for i in l:
        print(i)
    def wahaha():
        for i in range(200):
            yield '娃哈哈%s'%i
    
    g = wahaha()
    count = 0
    
    for i in g:
        count +=1
        print(i)
        if count > 50:
             break
    
    print('*******',g.__next__())
    
    for i in g:
        count +=1
        print(i)
        if count > 100:
            break
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  • 原文地址:https://www.cnblogs.com/LXL616/p/10674622.html
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