如何使用python检查电子邮件id列表并删除那些乱码/大写的

Question

我有一个json文件，我提取了一个电子邮件ID列表-特别是两个列表（垃圾邮件和合法电子邮件），但在这些列表中，我想消除电子邮件ID是大写，数字等，我怎么能把这些从列表中？你知道吗

with open(filename, 'r') as fp:
    json_decode = json.loads(fp.read())
    line = str(json_decode)

    # find all emails
    match = re.findall(r'[\w\.-]+@[\w.-]+', line)

    legit = []
    spam = []

    for email in match:
        email_status = email.endswith("gmail.com")
        if email_status == False:
            spam.append(email)
        else:

输出：

     The legit list is {'taylor.l@gmail.com', '6ca63336ba8b483ca5f543cbad585fbb@gmail.com', 'Taylor.L@gmail.gov', 'abuse@gmail.com'} I want only one element - {'taylor.l@gmail.com'} and it's not always the first element in the list.

      The spam list is {'n@TENT...', 'arealjcl@countable.us', 'image001.png@01D36CD8.2A2219D0', 'e8a1fdc83d13a56f4dbffdeb5942eba0@pisicano.cf'} and I want to remove everything except {'arealjcl@countable.us'}

如何使用regex来提出一个条件来消除我不需要的电子邮件id？你知道吗