python-yield详解
In : def simple_generator_function():...: yield 1
...: yield 2
...: yield 3
...:
这里有两个简单的方法来使用它：
In : for value in simple_generator_function():
...: print(value)
...:
1
2
3
In : our_generator = simple_generator_function()
In : next(our_generator)
Out: 1
In : next(our_generator)
Out: 2
In : next(our_generator)
Out: 3
In : def is_prime(number):
...: if number > 1:
...: if number == 2:
...: return True
...: if number % 2 == 0:
...: return False
...: for current in range(3, int(math.sqrt(number) + 1), 2):
...: if number % current == 0:
...: return False
...: return True
...: return False
...:
In : def get_primes(number):
...: while True:
...: if is_prime(number):
...: yield number
...: number += 1
...:
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