42 lines
819 B
Python
42 lines
819 B
Python
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def my_generator():
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print("开始")
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yield 1
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print("继续")
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yield 2
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print("结束")
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yield 3
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# g = my_generator() # 注意：此时函数体不会执行！
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# print(g,type(g)) # <class 'generator'>
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# # print(print,type(print))
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# print(next(g)) # 输出：开始 \n 1
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# print(next(g)) # 输出：继续 \n 2
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# print(next(g)) # 输出：结束 \n 3
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# # print(next(g)) # 榨干了
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# g2=my_generator()
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# for i in g2:
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# print(i)
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# print(len(g2)) # 生成器没有len方法
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# import time
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# def slow_generator():
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# for i in range(5):
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# yield f"第 {i+1} 条数据\n"
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# time.sleep(1) # 故意慢一点，方便观察
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#
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# g3=slow_generator()
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# for i in g3:
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# print(i)
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import json
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d=json.dumps('\n\n')
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print(d)
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# print('1\n\n2')
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