AUTHOR_PATTERN = [
            "责编[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：]",
            "责任编辑[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：]",
            "作者[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：]",
            "编辑[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：]",
            "文[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：]",
            "原创[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：]",
            "撰文[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：]",
            "来源[：|:| |丨|/]\s*([\u4E00-\u9FA5a-zA-Z]{2,20})[^\u4E00-\u9FA5|:|：|<]"]


DATETIME_PATTERN = [
    "(\d{4}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[0-1]?[0-9]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{4}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[2][0-3]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{4}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[0-1]?[0-9]:[0-5]?[0-9])",
    "(\d{4}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[2][0-3]:[0-5]?[0-9])",
    "(\d{4}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[1-24]\d时[0-60]\d分)([1-24]\d时)",
    "(\d{2}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[0-1]?[0-9]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{2}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[2][0-3]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{2}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[0-1]?[0-9]:[0-5]?[0-9])",
    "(\d{2}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[2][0-3]:[0-5]?[0-9])",
    "(\d{2}[-|/|.]\d{1,2}[-|/|.]\d{1,2}\s*?[1-24]\d时[0-60]\d分)([1-24]\d时)",
    "(\d{4}年\d{1,2}月\d{1,2}日\s*?[0-1]?[0-9]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{4}年\d{1,2}月\d{1,2}日\s*?[2][0-3]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{4}年\d{1,2}月\d{1,2}日\s*?[0-1]?[0-9]:[0-5]?[0-9])",
    "(\d{4}年\d{1,2}月\d{1,2}日\s*?[2][0-3]:[0-5]?[0-9])",
    "(\d{4}年\d{1,2}月\d{1,2}日\s*?[1-24]\d时[0-60]\d分)([1-24]\d时)",
    "(\d{2}年\d{1,2}月\d{1,2}日\s*?[0-1]?[0-9]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{2}年\d{1,2}月\d{1,2}日\s*?[2][0-3]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{2}年\d{1,2}月\d{1,2}日\s*?[0-1]?[0-9]:[0-5]?[0-9])",
    "(\d{2}年\d{1,2}月\d{1,2}日\s*?[2][0-3]:[0-5]?[0-9])",
    "(\d{2}年\d{1,2}月\d{1,2}日\s*?[1-24]\d时[0-60]\d分)([1-24]\d时)",
    "(\d{1,2}月\d{1,2}日\s*?[0-1]?[0-9]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{1,2}月\d{1,2}日\s*?[2][0-3]:[0-5]?[0-9]:[0-5]?[0-9])",
    "(\d{1,2}月\d{1,2}日\s*?[0-1]?[0-9]:[0-5]?[0-9])",
    "(\d{1,2}月\d{1,2}日\s*?[2][0-3]:[0-5]?[0-9])",
    "(\d{1,2}月\d{1,2}日\s*?[1-24]\d时[0-60]\d分)([1-24]\d时)",
    "(\d{4}[-|/|.]\d{1,2}[-|/|.]\d{1,2})",
    "(\d{2}[-|/|.]\d{1,2}[-|/|.]\d{1,2})",
    "(\d{4}年\d{1,2}月\d{1,2}日)",
    "(\d{2}年\d{1,2}月\d{1,2}日)",
    "(\d{1,2}月\d{1,2}日)"
]

TITLE_HTAG_XPATH = '//h1//text() | //h2//text() | //h3//text() | //h4//text()'

TITLE_SPLIT_CHAR_PATTERN = '[-_|]'

USELESS_TAG = ['style', 'script', 'link', 'video', 'iframe', 'source', 'picture', 'header', 'blockquote']

# if one tag in the follow list does not contain any child node nor content, it could be removed
TAGS_CAN_BE_REMOVE_IF_EMPTY = ['section', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'span']

USELESS_ATTR = ['share',
                'contribution',
                'copyright',
                'copy-right',
                'disclaimer',
                'recommend',
                'related',
                'footer',
                'comment',
                'social',
                'submeta',
                'report-infor'
                ]