附加到带有字符串索引的 Python 字典时出现 KeyError

Question

I am getting the following error:

KeyError: 'sat'

in my Python script as below:

balls = {}
balls_count = 0

for entry_content in latest_results_soup.find_all('img',vspace='12'):

    if balls_count < 5:
        draw_day = 'sat'
    else:
        draw_day = 'wed'

    balls[draw_day].append(int(entry_content['src'].rsplit('/', 1)[-1].split('.')[0]))

    balls_count += 1

What i'm looking for is either a dict or list to parse further down which has a structure something like:

balls['sat'] = [5, 7, 20, 28, 30]
balls['wed'] = [1, 6, 9, 19, 20]

I feel like I am close (Python n00b, BTW) but clearly not close enough.

Answer 1

我认为您应该在设置值或附加值之前提供sat和wed键。

balls = {'sat': [], 'wed': []}