- group()
获取到的是匹配到的整体内容 - groups()
获取到分组后的内容，以元组形式输出
示例：
text = 'id=1711349'
match_object = re.match("(id|key)=(w+)", text.strip())
v1 = match_object.group() # "id=1711349"
name,value = match_object.groups() # ("id","1711349")
text = 'id=1711349'
match_object = re.match("(id|key)=(w+)", text.strip())
v1 = match_object.group() # "id=1711349"
name,value = match_object.groups() # ("id","1711349")
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