如何迭代和循环遍历python中的每个数组值

Question

    while True:
        for i in range(len(listing_ids)):
            response = requests.get(f'apiurl/{listing_ids[i]}/pr', cookies=cookies, headers=headers) 
            response = response.json()
            print(response['jsonValue'])
            break

I have an array currently as listing_ids and within this array has an undetermined count of values that I want to use within a request URL then price the response then loop back through until the the last value within the array was used. How can I format this? Currently it just infinitely loops with the 1st value ONLY

Answer 1

The break statement in your code breaks the for loop after it's first iteration, then because the while loop is still running the for loop starts all over again. Step-by-step what's happening is:

1. The while loop starts its first iteration
2. The for loop starts its first iteration
3. First request is made for the first id
4. First JSON value is printed
5. break is executed - start from step 2 again

If I understood your intent correctly you can just remove the while loop and the break statement. Your code will then iterate over the list and make a request for each id.