python代码出现错误

Question

self.startTime.setText("开始时间:"+str(data[0][5]))
就是我想不显示“开始时间+str((str(data[0][5]))”,我把这个删掉后就会报最下面那个的错误，按照提示就是这下面的代码出错，我该怎么修改以下代码？（望得到代码）

def _strptime(data_string, format="%a %b %d %H:%M:%S %Y"):
    """Return a 2-tuple consisting of a time struct and an int containing
    the number of microseconds based on the input string and the
    format string."""

    for index, arg in enumerate([data_string, format]):
        if not isinstance(arg, str):
            msg = "strptime() argument {} must be str, not {}"
            raise TypeError(msg.format(index, type(arg)))

    global _TimeRE_cache, _regex_cache
    with _cache_lock:
        locale_time = _TimeRE_cache.locale_time
        if (_getlang() != locale_time.lang or
            time.tzname != locale_time.tzname or
            time.daylight != locale_time.daylight):
            _TimeRE_cache = TimeRE()
            _regex_cache.clear()
            locale_time = _TimeRE_cache.locale_time
        if len(_regex_cache) > _CACHE_MAX_SIZE:
            _regex_cache.clear()
        format_regex = _regex_cache.get(format)
        if not format_regex:
            try:
                format_regex = _TimeRE_cache.compile(format)
            # KeyError raised when a bad format is found; can be specified as
            # \\, in which case it was a stray % but with a space after it
            except KeyError as err:
                bad_directive = err.args[0]
                if bad_directive == "\\":
                    bad_directive = "%"
                del err
                raise ValueError("'%s' is a bad directive in format '%s'" %
                                    (bad_directive, format)) from None
            # IndexError only occurs when the format string is "%"
            except IndexError:
                raise ValueError("stray %% in format '%s'" % format) from None
            _regex_cache[format] = format_regex
    found = format_regex.match(data_string)
    if not found:
        raise ValueError("time data %r does not match format %r" %
                         (data_string, format))
    if len(data_string) != found.end():
        raise ValueError("unconverted data remains: %s" %
                          data_string[found.end():])

File "D:\新建文件夹\test1\app\widgets\widgets.py", line 76, in refresh_time
    temp3 = datetime.datetime.strptime(temp2, "%Y-%m-%d %H:%M:%S")
  File "C:\li\python\lib\_strptime.py", line 568, in _strptime_datetime
    tt, fraction, gmtoff_fraction = _strptime(data_string, format)
  File "C:\li\python\lib\_strptime.py", line 349, in _strptime
    raise ValueError("time data %r does not match format %r" %
ValueError: time data '' does not match format '%Y-%m-%d %H:%M:%S'

Answer 1

time data '' does not match format '%Y-%m-%d %H:%M:%S'

data_string 是一个空字符串，导致转换异常了。