~/opt/anaconda3/lib/python3.9/site-packages/pandas/core/tools/datetimes.py in _convert_listlike_datetimes(arg, format, name, tz, unit, errors, infer_datetime_format, dayfirst, yearfirst, exact)
391
392 if format is not None:
--> 393 res = _to_datetime_with_format(
394 arg, orig_arg, name, tz, format, exact, errors, infer_datetime_format
395 )
~/opt/anaconda3/lib/python3.9/site-packages/pandas/core/tools/datetimes.py in _to_datetime_with_format(arg, orig_arg, name, tz, fmt, exact, errors, infer_datetime_format)
511 return DatetimeIndex._simple_new(dta, name=name)
512 except (ValueError, TypeError):
--> 513 raise err
514
515
~/opt/anaconda3/lib/python3.9/site-packages/pandas/core/tools/datetimes.py in _to_datetime_with_format(arg, orig_arg, name, tz, fmt, exact, errors, infer_datetime_format)
498
499 # fallback
--> 500 res = _array_strptime_with_fallback(
501 arg, name, tz, fmt, exact, errors, infer_datetime_format
502 )
~/opt/anaconda3/lib/python3.9/site-packages/pandas/core/tools/datetimes.py in _array_strptime_with_fallback(arg, name, tz, fmt, exact, errors, infer_datetime_format)
434
435 try:
--> 436 result, timezones = array_strptime(arg, fmt, exact=exact, errors=errors)
437 if "%Z" in fmt or "%z" in fmt:
438 return _return_parsed_timezone_results(result, timezones, tz, name)
~/opt/anaconda3/lib/python3.9/site-packages/pandas/_libs/tslibs/strptime.pyx in pandas._libs.tslibs.strptime.array_strptime()
ValueError: time data '01/07/2013' does not match format '%d-%m-%y' (match)
问题：
怎么修改使得date数据类型从object到datetime