Question

我正在尝试将自由格式日期字符串解析为有意义的日期。到目前为止，我已经提出了这个功能：

"""Parse raw date string into YYYY-MM-DD"""
def __parseDate(self, rawDate):
    if len(rawDate) == 0:
        return u""
    if "{{Birth year and age|" in rawDate:
        rawDate = rawDate.replace("{{","").replace("}}","")
        year = rawDate.split("|")[1].strip()
        return year + "-01-01"
    elif "{{Birth date and age|" in rawDate:
        rawDate = rawDate.replace("{{","").replace("}}","")
        year = rawDate.split("|")[1].strip()
        month = rawDate.split("|")[2].strip()
        day = rawDate.split("|")[3].strip()
        if len(month) == 1:
            month = "0" + month
        if len(day) == 1:
            day = "0" + day
        return year + "-" + month + "-" + day
    elif "{{" in rawDate:
        self.__log(u"XXX Date parse error (unknown template): " + rawDate)
        return u"1770-01-01"
    elif re.match("([a-zA-Z]* [0-9][0-9]?, [0-9][0-9][0-9][0-9])", rawDate):
        match = re.findall("([a-zA-Z]* [0-9][0-9]?, [0-9][0-9][0-9][0-9])", rawDate)[0]
        parts = match.replace(",","").split(" ")
        year = parts[2].strip()
        month = parts[0].replace(".","").strip()
        day = parts[1].strip()
        tryAgain = False
        try:
            month = str(strptime(month,'%B').tm_mon)
        except:
            tryAgain = True
            pass
        try:
            if tryAgain:
                month = str(strptime(month,'%b').tm_mon)
        except:
            self.__log(u"XXX Date parse error: " + rawDate)
            return u"1770-01-01"
            pass

        if len(month) == 1:
            month = "0" + month
        if len(day) == 1:
            day = "0" + day
        return year + "-" + month + "-" + day
    elif re.match("[0-9][0-9][0-9][0-9]-[0-9][0-9]?-[0-9][0-9]?", rawDate):
        parts = rawDate.split("-")
        year = parts[0].strip()
        month = parts[1].strip()
        day = parts[2].strip()
        if len(month) == 1:
            month = "0" + month
        if len(day) == 1:
            day = "0" + day
        return year + "-" + month + "-" + day
    else:
        self.__log(u"XXX Date parse error: " + rawDate)
        return u"1770-01-01"

我是在正确的轨道上还是有更好的方法？

更新通过自由格式字符串，我的意思是来自维基页面，特别是人员数据模板。此模板中的日期字段是自由格式，因为人类已在其中键入内容。通常，这是任意数量格式的日期，或者它本身是描述日期的另一个wiki模板。以下是该领域可能存在的一些例子：

{{Birth year and age|1933}}
August 23, 1967
1990-01-29
23 August 1967
1999
a;lsdfhals;djkfh

Answer 1

可能最终的是parsedatetime。

另一个选择是dateutil。

有没有更好的方法在python中进行日期解析呢？

1 个答案: