目标匹配后如何停止发电机？

如何解决目标匹配后如何停止发电机？

尝试创建一个生成器，该生成器生成指定范围内的一组随机数字，然后在生成指定的目标编号后停止。尝试达到该次数的次数将被打印。如果未在指定的尝试次数内生成该数字，则用户将获得单独的提示。这是我到目前为止的内容：

try:
    min_value = int(input("Enter the minimum value for your random generator: "))
    max_value = int(input("Enter the maximum value for your random generator: "))
    target = int(input("Enter the target value you are trying to find: "))
    max_attempts = int(input("Enter the maximum number of attempts to find the target before stopping generation: "))
except ValueError:
    print("Please enter an integer value for your input!")

def find_target(target: int,min_value: int,max_value: int,max_attempts: int) -> Optional[int]:
    # Start counter for number of attempts
    j = 0
    while j in range(max_attempts):
        #Increment the attempts counter
        j += 1
        for k in range(min_value,max_value):
            if not target:
                yield k

gen = find_target(target,min_value,max_value,max_attempts)

while True:
    print(next(gen))

一旦找到目标，理想情况下将发生以下情况：

# Stop the generator
print("Target acquired! It only took ",j,"tries to find the target!")
gen.close()

if find_target(target,max_attempts) is None:
    print("Could not find target within the max number of attempts. Maybe better luck next time?")

现在，生成器立即停止（我猜测它与如何指定if not target有关）。我怎样才能使它起作用呢？

解决方法

如果要返回目标，只需在if语句后放置yield。

import random

def gen(low,high,attempts,target):
    for j in range(1,attempts+1):
        guess = random.randint(low,high)
        yield guess
        if guess == target:
            print()
            print("Target acquired! It only took ",j,"tries to find the target!")
            break
    else:
        print()
        print("Could not find target within the max number of attempts. Maybe better luck next time?")

low,high = 0,10
attempts = 10
target = 5

for el in gen(low,target):
    print(el,end=' ')

输出：

7 0 0 3 3 5 
Target acquired! It only took  6 tries to find the target!

#or

4 2 0 6 1 4 3 6 1 6 
Could not find target within the max number of attempts. Maybe better luck next time?