python 把2018年8月9号转换成 2018-08-09

def date_of_conversion(CH_time): if '年' and '月' and '日' in CH_time: if len(CH_time) == 9: CH_time = CH_time[:-4] + '0' + CH_time[-4:-2] + '0' + CH_time[-2:] return CH_t

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