TypeError                                 Traceback (most recent call last)
<ipython-input-104-de1e6503efe6> in <module>
      9 df1['дебит нефти, м3/сут'] = df1.apply(result_c_col, axis = 1)
     10 df1['дебит воды, м3/сут'] = df1.apply(result_d_col, axis = 1)
---> 11 df1['коэффициент эксплуатации'] = df1.apply(result_e_col, axis = 1)
     12 df1['дата'] = df1['дата'].dt.strftime('%d.%m.%Y')
     13 mask = (df1['дата'] >= date_question) & (df1['дата'] <= end_date)

B:\Games\Anaconda3\lib\site-packages\pandas\core\frame.py in apply(self, func, axis, raw, result_type, args, **kwds)
   6876             kwds=kwds,
   6877         )
-> 6878         return op.get_result()
   6879
   6880     def applymap(self, func) -> "DataFrame":

B:\Games\Anaconda3\lib\site-packages\pandas\core\apply.py in get_result(self)
    184             return self.apply_raw()
    185
--> 186         return self.apply_standard()
    187
    188     def apply_empty_result(self):

B:\Games\Anaconda3\lib\site-packages\pandas\core\apply.py in apply_standard(self)
    293
    294             try:
--> 295                 result = libreduction.compute_reduction(
    296                     values, self.f, axis=self.axis, dummy=dummy, labels=labels
    297                 )

pandas\_libs\reduction.pyx in pandas._libs.reduction.compute_reduction()

pandas\_libs\reduction.pyx in pandas._libs.reduction.Reducer.get_result()

<ipython-input-102-4c31caa1af20> in result_e_col(row)
     28     m = row['Месяц']
     29     try:
---> 30         e_col = q_col / calendar.monthrange(y, m)[1]
     31         return round(e_col, 2)
     32     except ZeroDivisionError:

B:\Games\Anaconda3\lib\calendar.py in monthrange(year, month)
    123     if not 1 <= month <= 12:
    124         raise IllegalMonthError(month)
--> 125     day1 = weekday(year, month, 1)
    126     ndays = mdays[month] + (month == February and isleap(year))
    127     return day1, ndays

B:\Games\Anaconda3\lib\calendar.py in weekday(year, month, day)
    115     if not datetime.MINYEAR <= year <= datetime.MAXYEAR:
    116         year = 2000 + year % 400
--> 117     return datetime.date(year, month, day).weekday()
    118
    119

TypeError: integer argument expected, got float