python 日期输出附带毫秒

def get_time_stamp(ct):
    local_time = time.localtime(ct)
    data_head = time.strftime("%Y-%m-%d %H:%M:%S", local_time)
　　 data_secs = (ct - int(ct)) *
    time_stamp = "%s:%03d" % (data_head, data_secs)
    return time_stamp

print(get_time_stamp(1546244983.3656037))

输出

-- :::

或者

import datetime

print(datetime.datetime.now())
print(datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S:%f'))
print(datetime.datetime.now().strftime('%Y%m%d%H%M%S%f'))