title: Pandas - convert column to int and coerce NaN
body: <p>Given a dataframe like below</p>
  
  <pre><code>colVals = [['05:17:55.703', '', '', '', '', '', '21', '', '3', '89', '891', '11', ''], ['05:17:55.703', '', '', '', '', '', '21', '', '3', '217', '891', '12', ''], ['05:17:55.703', '', '', '', '', '', '21', '', '3', '217', '891', '13', ''], ['05:17:55.703', '', '', '', '', '', '21', '', '3', '217', '891', '15', ''], ['05:17:55.703', '', '', '', '', '', '21', '', '3', '217', '891', '16', ''], ['05:17:55.703', '', '', '', '', '', '21', '', '3', '217', '891', '17', ''], ['05:17:55.703', '', '', '', '', '', '21', '', '3', '217', '891', '18', ''], ['05:17:55.707', '', '', '', '', '', '18', '', '3', '185', '892', '0', ''], ['05:17:55.707', '', '', '', '', '', '21', '', '3', '185', '892', '1', ''], ['05:17:55.707', '', '', '', '', '', '17', '', '3', '73', '892', '5', ''], ['05:17:55.707', '', '', '', '', '', '17', '', '3', '185', '892', '6', ''], ['05:17:55.707', '', '', '', '', '', '21', '', '3', '73', '892', '7', ''], ['05:17:55.708', '268', '4', '28', '-67.60', '13', '', '2', '', '', '', '', '2'], ['05:17:55.711', '', '', '', '', '', '18', '', '3', '57', '892', '10', ''], ['05:17:55.711', '', '', '', '', '', '21', '', '3', '201', '892', '11', ''], ['05:17:55.711', '', '', '', '', '', '21', '', '3', '25', '892', '12', ''], ['05:17:55.723', '', '', '', '', '', '21', '', '3', '217', '893', '11', ''], ['05:17:55.723', '', '', '', '', '', '21', '', '3', '217', '893', '15', ''], ['05:17:55.723', '', '', '', '', '', '21', '', '3', '217', '893', '16', ''], ['05:17:55.726', '268', '4', '', '-67.80', '', '', '', '', '', '', '', ''], ['05:17:55.728', '', '', '28', '', '12', '31', '2', '3', '185', '894', '0', '1'], ['05:17:55.728', '', '', '', '', '', '31', '', '3', '185', '894', '1', ''], ['05:17:55.731', '', '', '', '', '', '31', '', '3', '217', '894', '10', ''], ['05:17:55.731', '', '', '', '', '', '20', '', '3', '217', '894', '11', ''], ['05:17:55.731', '', '', '', '', '', '20', '', '3', '217', '894', '12', ''], ['05:17:55.731', '', '', '', '', '', '20', '', '3', '217', '894', '13', ''], ['05:17:55.743', '', '', '', '', '', '20', '', '3', '217', '895', '11', ''], ['05:17:55.743', '', '', '', '', '', '20', '', '3', '217', '895', '15', ''], ['05:17:55.743', '', '', '', '', '', '20', '', '3', '217', '895', '16', ''], ['05:17:55.746', '268', '4', '', '-67.82', '', '', '', '', '', '', '', ''], ['05:17:55.747', '', '', '28', '', '13', '20', '2', '3', '185', '896', '1', '2'], ['05:17:55.747', '', '', '', '', '', '20', '', '3', '185', '896', '2', ''], ['05:17:55.747', '', '', '', '', '', '30', '', '3', '217', '896', '5', ''], ['05:17:55.751', '', '', '', '', '', '18', '', '3', '217', '896', '10', ''], ['05:17:55.751', '', '', '', '', '', '21', '', '3', '217', '896', '11', ''], ['05:17:55.751', '', '', '', '', '', '21', '', '3', '217', '896', '12', ''], ['05:17:55.751', '', '', '', '', '', '21', '', '3', '217', '896', '13', ''], ['05:17:55.763', '', '', '', '', '', '31', '', '3', '217', '897', '11', ''], ['05:17:55.763', '', '', '', '', '', '30', '', '3', '217', '897', '15', ''], ['05:17:55.763', '', '', '', '', '', '20', '', '3', '217', '897', '16', ''], ['05:17:55.763', '', '', '', '', '', '20', '', '3', '217', '897', '17', ''], ['05:17:55.766', '268', '4', '', '-67.13', '', '', '', '', '', '', '', ''], ['05:17:55.768', '', '', '28', '', '12', '20', '2', '3', '185', '898', '3', '2'], ['05:17:55.768', '', '', '', '', '', '16', '', '3', '217', '898', '6', ''], ['05:17:55.771', '', '', '', '', '', '18', '', '3', '217', '898', '10', ''], ['05:17:55.771', '', '', '', '', '', '20', '', '3', '217', '898', '11', ''], ['05:17:55.771', '', '', '', '', '', '20', '', '3', '217', '898', '12', ''], ['05:17:55.784', '', '', '', '', '', '20', '', '3', '217', '899', '11', ''], ['05:17:55.784', '', '', '', '', '', '20', '', '3', '41', '899', '12', ''], ['05:17:55.784', '', '', '', '', '', '20', '', '3', '25', '899', '13', ''], ['05:17:55.784', '', '', '', '', '', '20', '', '3', '217', '899', '15', ''], ['05:17:55.784', '', '', '', '', '', '20', '', '3', '217', '899', '16', ''], ['05:17:55.784', '', '', '', '', '', '20', '', '3', '217', '899', '17', ''], ['05:17:55.784', '', '', '', '', '', '20', '', '3', '217', '899', '18', ''], ['05:17:55.786', '268', '4', '', '-67.66', '', '', '', '', '', '', '', ''], ['05:17:55.788', '', '', '28', '', '13', '18', '2', '3', '185', '900', '0', '2'], ['05:17:55.788', '', '', '', '', '', '20', '', '3', '185', '900', '1', ''], ['05:17:55.788', '', '', '', '', '', '20', '', '3', '185', '900', '2', ''], ['05:17:55.788', '', '', '', '', '', '16', '', '3', '41', '900', '5', ''], ['05:17:55.788', '', '', '', '', '', '17', '', '3', '185', '900', '6', ''], ['05:17:55.791', '', '', '', '', '', '20', '', '3', '105', '900', '7', ''], ['05:17:55.791', '', '', '', '', '', '20', '', '3', '89', '900', '8', ''], ['05:17:55.791', '', '', '', '', '', '18', '', '3', '217', '900', '10', ''], ['05:17:55.791', '', '', '', '', '', '20', '', '3', '217', '900', '11', ''], ['05:17:55.791', '', '', '', '', '', '20', '', '3', '25', '900', '12', ''], ['05:17:55.806', '268', '4', '', '-67.50', '', '', '', '', '', '', '', ''], ['05:17:55.808', '', '', '28', '', '12', '31', '2', '3', '185', '902', '0', '1'], ['05:17:55.808', '', '', '', '', '', '31', '', '3', '185', '902', '1', ''], ['05:17:55.808', '', '', '', '', '', '20', '', '3', '25', '902', '2', ''], ['05:17:55.808', '', '', '', '', '', '20', '', '3', '25', '902', '3', ''], ['05:17:55.808', '', '', '', '', '', '16', '', '3', '217', '902', '5', ''], ['05:17:55.808', '', '', '', '', '', '16', '', '3', '217', '902', '6', ''], ['05:17:55.811', '', '', '', '', '', '20', '', '3', '89', '902', '7', ''], ['05:17:55.811', '', '', '', '', '', '20', '', '3', '121', '902', '8', ''], ['05:17:55.811', '', '', '', '', '', '18', '', '3', '217', '902', '10', ''], ['05:17:55.811', '', '', '', '', '', '20', '', '3', '217', '902', '11', ''], ['05:17:55.811', '', '', '', '', '', '20', '', '3', '73', '902', '12', ''], ['05:17:55.811', '', '', '', '', '', '20', '', '3', '9', '902', '15', ''], ['05:17:55.815', '', '', '', '', '', '20', '', '3', '217', '902', '16', ''], ['05:17:55.815', '', '', '', '', '', '20', '', '3', '25', '902', '17', ''], ['05:17:55.815', '', '', '', '', '', '20', '', '3', '217', '902', '18', ''], ['05:17:55.815', '', '', '', '', '', '18', '', '3', '217', '903', '0', ''], ['05:17:55.815', '', '', '', '', '', '21', '', '3', '217', '903', '1', ''], ['05:17:55.815', '', '', '', '', '', '19', '', '3', '105', '903', '2', ''], ['05:17:55.815', '', '', '', '', '', '21', '', '3', '41', '903', '3', ''], ['05:17:55.823', '', '', '', '', '', '21', '', '3', '217', '903', '11', ''], ['05:17:55.823', '', '', '', '', '', '21', '', '3', '9', '903', '12', ''], ['05:17:55.823', '', '', '', '', '', '21', '', '3', '105', '903', '13', ''], ['05:17:55.823', '', '', '', '', '', '21', '', '3', '217', '903', '15', ''], ['05:17:55.823', '', '', '', '', '', '21', '', '3', '217', '903', '16', ''], ['05:17:55.823', '', '', '', '', '', '21', '', '3', '121', '903', '17', ''], ['05:17:55.823', '', '', '', '', '', '21', '', '3', '89', '903', '18', ''], ['05:17:55.826', '268', '4', '', '-67.51', '', '', '', '', '', '', '', ''], ['05:17:55.828', '', '', '28', '', '12', '18', '2', '3', '185', '904', '0', '1'], ['05:17:55.828', '', '', '', '', '', '21', '', '3', '185', '904', '1', ''], ['05:17:55.828', '', '', '', '', '', '21', '', '3', '185', '904', '2', ''], ['05:17:55.828', '', '', '', '', '', '21', '', '3', '185', '904', '3', ''], ['05:17:55.828', '', '', '', '', '', '17', '', '3', '217', '904', '5', ''], ['05:17:55.828', '', '', '', '', '', '17', '', '3', '217', '904', '6', ''], ['05:17:55.831', '', '', '', '', '', '21', '', '3', '217', '904', '7', ''], ['05:17:55.831', '', '', '', '', '', '20', '', '3', '169', '904', '11', ''], ['05:17:55.831', '', '', '', '', '', '20', '', '3', '217', '904', '12', ''], ['05:17:55.831', '', '', '', '', '', '20', '', '3', '217', '904', '13', ''], ['05:17:55.846', '268', '4', '', '-67.01', '', '', '', '', '', '', '', ''], ['05:17:55.848', '', '', '28', '', '13', '19', '2', '3', '57', '906', '1', '2'], ['05:17:55.848', '', '', '', '', '', '19', '', '3', '41', '906', '2', ''], ['05:17:55.848', '', '', '', '', '', '19', '', '3', '73', '906', '3', ''], ['05:17:55.848', '', '', '', '', '', '16', '', '3', '217', '906', '5', ''], ['05:17:55.848', '', '', '', '', '', '16', '', '3', '217', '906', '6', ''], ['05:17:55.848', '', '', '', '', '', '19', '', '3', '9', '906', '7', ''], ['05:17:55.851', '', '', '', '', '', '20', '', '3', '121', '906', '11', ''], ['05:17:55.851', '', '', '', '', '', '20', '', '3', '57', '906', '12', ''], ['05:17:55.851', '', '', '', '', '', '20', '', '3', '105', '906', '13', ''], ['05:17:55.855', '', '', '', '', '', '20', '', '3', '217', '906', '15', ''], ['05:17:55.855', '', '', '', '', '', '20', '', '3', '217', '906', '16', ''], ['05:17:55.855', '', '', '', '', '', '20', '', '3', '105', '906', '17', ''], ['05:17:55.855', '', '', '', '', '', '17', '', '3', '185', '907', '0', ''], ['05:17:55.855', '', '', '', '', '', '20', '', '3', '217', '907', '1', ''], ['05:17:55.855', '', '', '', '', '', '20', '', '3', '9', '907', '2', ''], ['05:17:55.864', '', '', '', '', '', '20', '', '3', '217', '907', '11', ''], ['05:17:55.864', '', '', '', '', '', '20', '', '3', '57', '907', '12', ''], ['05:17:55.864', '', '', '', '', '', '20', '', '3', '153', '907', '13', ''], ['05:17:55.864', '', '', '', '', '', '20', '', '3', '217', '907', '15', ''], ['05:17:55.864', '', '', '', '', '', '20', '', '3', '217', '907', '16', ''], ['05:17:55.864', '', '', '', '', '', '20', '', '3', '57', '907', '17', ''], ['05:17:55.864', '', '', '', '', '', '20', '', '3', '105', '907', '18', ''], ['05:17:55.867', '', '', '', '', '', '17', '', '3', '185', '908', '0', ''], ['05:17:55.867', '', '', '', '', '', '20', '', '3', '185', '908', '1', ''], ['05:17:55.867', '', '', '', '', '', '20', '', '3', '9', '908', '2', ''], ['05:17:55.867', '', '', '', '', '', '16', '', '3', '73', '908', '6', ''], ['05:17:55.868', '268', '4', '28', '-66.79', '13', '', '2', '', '', '', '', '2'], ['05:17:55.871', '', '', '', '', '', '20', '', '3', '105', '908', '7', ''], ['05:17:55.871', '', '', '', '', '', '20', '', '3', '25', '908', '8', ''], ['05:17:55.871', '', '', '', '', '', '17', '', '3', '217', '908', '10', ''], ['05:17:55.871', '', '', '', '', '', '21', '', '3', '217', '908', '11', ''], ['05:17:55.871', '', '', '', '', '', '21', '', '3', '9', '908', '12', ''], ['05:17:55.871', '', '', '', '', '', '21', '', '3', '121', '908', '13', ''], ['05:17:55.875', '', '', '', '', '', '21', '', '3', '217', '908', '15', ''], ['05:17:55.875', '', '', '', '', '', '21', '', '3', '217', '908', '16', ''], ['05:17:55.875', '', '', '', '', '', '21', '', '3', '57', '908', '17', ''], ['05:17:55.875', '', '', '', '', '', '18', '', '3', '73', '909', '0', ''], ['05:17:55.875', '', '', '', '', '', '21', '', '3', '217', '909', '1', ''], ['05:17:55.875', '', '', '', '', '', '21', '', '3', '89', '909', '2', ''], ['05:17:55.875', '', '', '', '', '', '21', '', '3', '89', '909', '3', ''], ['05:17:55.886', '268', '4', '', '-67.48', '', '', '', '', '', '', '', ''], ['05:17:55.888', '', '', '28', '', '12', '31', '2', '3', '185', '910', '0', '1'], ['05:17:55.888', '', '', '', '', '', '21', '', '3', '89', '910', '1', ''], ['05:17:55.888', '', '', '', '', '', '21', '', '3', '9', '910', '2', ''], ['05:17:55.888', '', '', '', '', '', '21', '', '3', '185', '910', '3', ''], ['05:17:55.888', '', '', '', '', '', '17', '', '3', '217', '910', '5', ''], ['05:17:55.888', '', '', '', '', '', '17', '', '3', '217', '910', '6', ''], ['05:17:55.891', '', '', '', '', '', '21', '', '3', '89', '910', '7', ''], ['05:17:55.891', '', '', '', '', '', '21', '', '3', '73', '910', '8', ''], ['05:17:55.891', '', '', '', '', '', '18', '', '3', '217', '910', '10', ''], ['05:17:55.891', '', '', '', '', '', '21', '', '3', '217', '910', '11', ''], ['05:17:55.891', '', '', '', '', '', '21', '', '3', '57', '910', '12', ''], ['05:17:55.900', '', '', '', '', '', '21', '', '3', '217', '911', '3', ''], ['05:17:55.900', '', '', '', '', '', '17', '', '3', '217', '911', '5', ''], ['05:17:55.900', '', '', '', '', '', '17', '', '3', '217', '911', '6', ''], ['05:17:55.900', '', '', '', '', '', '21', '', '3', '105', '911', '7', ''], ['05:17:55.900', '', '', '', '', '', '21', '', '3', '25', '911', '8', ''], ['05:17:55.900', '', '', '', '', '', '18', '', '3', '217', '911', '10', ''], ['05:17:55.903', '', '', '', '', '', '21', '', '3', '217', '911', '11', ''], ['05:17:55.903', '', '', '', '', '', '21', '', '3', '57', '911', '12', ''], ['05:17:55.903', '', '', '', '', '', '21', '', '3', '153', '911', '13', ''], ['05:17:55.903', '', '', '', '', '', '21', '', '3', '217', '911', '15', ''], ['05:17:55.903', '', '', '', '', '', '21', '', '3', '217', '911', '16', ''], ['05:17:55.903', '', '', '', '', '', '21', '', '3', '137', '911', '17', ''], ['05:17:55.906', '268', '4', '', '-67.79', '', '', '', '', '', '', '', ''], ['05:17:55.908', '', '', '28', '', '13', '18', '2', '3', '57', '912', '0', '2'], ['05:17:55.908', '', '', '', '', '', '21', '', '3', '185', '912', '1', ''], ['05:17:55.908', '', '', '', '', '', '21', '', '3', '57', '912', '2', ''], ['05:17:55.908', '', '', '', '', '', '17', '', '3', '137', '912', '5', ''], ['05:17:55.908', '', '', '', '', '', '17', '', '3', '169', '912', '6', ''], ['05:17:55.923', '', '', '', '', '', '21', '', '3', '217', '913', '11', ''], ['05:17:55.923', '', '', '', '', '', '21', '', '3', '89', '913', '12', ''], ['05:17:55.926', '268', '4', '', '-68.13', '', '', '', '', '', '', '', ''], ['05:17:55.928', '', '', '28', '', '13', '31', '2', '3', '185', '914', '0', '2'], ['05:17:55.928', '', '', '', '', '', '21', '', '3', '105', '914', '2', ''], ['05:17:55.928', '', '', '', '', '', '17', '', '3', '25', '914', '5', ''], ['05:17:55.928', '', '', '', '', '', '17', '', '3', '121', '914', '6', ''], ['05:17:55.928', '', '', '', '', '', '21', '', '3', '25', '914', '7', ''], ['05:17:55.931', '', '', '', '', '', '18', '', '3', '89', '914', '10', ''], ['05:17:55.931', '', '', '', '', '', '21', '', '3', '217', '914', '11', ''], ['05:17:55.931', '', '', '', '', '', '21', '', '3', '73', '914', '12', ''], ['05:17:55.939', '', '', '', '', '', '17', '', '3', '137', '915', '5', ''], ['05:17:55.939', '', '', '', '', '', '17', '', '3', '153', '915', '6', ''], ['05:17:55.939', '', '', '', '', '', '21', '', '3', '73', '915', '7', ''], ['05:17:55.939', '', '', '', '', '', '18', '', '3', '153', '915', '10', ''], ['05:17:55.943', '', '', '', '', '', '21', '', '3', '217', '915', '11', ''], ['05:17:55.943', '', '', '', '', '', '21', '', '3', '137', '915', '12', ''], ['05:17:55.943', '', '', '', '', '', '21', '', '3', '137', '915', '15', ''], ['05:17:55.943', '', '', '', '', '', '21', '', '3', '217', '915', '16', ''], ['05:17:55.943', '', '', '', '', '', '21', '', '3', '105', '915', '17', ''], ['05:17:55.946', '268', '4', '', '-67.45', '', '', '', '', '', '', '', ''], ['05:17:55.948', '', '', '28', '', '9', '30', '3', '3', '160', '916', '0', '3'], ['05:17:55.948', '', '', '', '', '', '21', '', '3', '121', '916', '1', ''], ['05:17:55.948', '', '', '', '', '', '21', '', '3', '105', '916', '2', ''], ['05:17:55.948', '', '', '', '', '', '17', '', '3', '73', '916', '5', ''], ['05:17:55.948', '', '', '', '', '', '17', '', '3', '137', '916', '6', ''], ['05:17:55.959', '', '', '', '', '', '13', '', '4', '217', '917', '3', ''], ['05:17:55.959', '', '', '', '', '', '11', '', '4', '217', '917', '5', ''], ['05:17:55.959', '', '', '', '', '', '11', '', '4', '217', '917', '6', ''], ['05:17:55.959', '', '', '', '', '', '13', '', '4', '217', '917', '7', ''], ['05:17:55.959', '', '', '', '', '', '13', '', '4', '217', '917', '8', ''], ['05:17:55.959', '', '', '', '', '', '11', '', '4', '153', '917', '10', ''], ['05:17:55.963', '', '', '', '', '', '13', '', '4', '217', '917', '11', ''], ['05:17:55.963', '', '', '', '', '', '13', '', '4', '121', '917', '12', ''], 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  colNames = ["Time","Col2","Col3","Col4","Col5","Col6","Col7","Col8","Col9","Col10","Col11","Col12","Col13"]
  df = pd.DataFrame(colVals, columns=colNames)
  df = df.set_index('Time')
  df = df.apply(pd.to_numeric, errors='coerce')
  
  
      print (df.dtypes)
      Col2     float64
      Col3     float64
      Col4     float64
      Col5     float64
      Col6     float64
      Col7     float64
      Col8     float64
      Col9     float64
      Col10    float64
      Col11    float64
      Col12    float64
      Col13    float64
      dtype: object
  </code></pre>
  
  <p>As you may notice here all the columns have been converted to <code>float</code> type. Is there a way to convert some columns as <code>int</code> ? </p>
  
  <p>Tried the following</p>
  
  <pre><code>type_dict = {'Col2': int}
  df.astype(dtype_dict)
  </code></pre>
  
  <p>This throws the error <code>ValueError: Cannot convert non-finite values (NA or inf) to integer</code></p>
  
  <p>Read about <a href="https://pandas.pydata.org/pandas-docs/stable/user_guide/integer_na.html#nullable-integer-data-type" rel="nofollow noreferrer">Nullable integer data type</a> and tried</p>
  
  <pre><code>dtype_dict = {'Col2': 'Int64'}
  df.astype(dtype_dict)
  </code></pre>
  
  <p>This throws error <code>ValueError: Cannot convert non-finite values (NA or inf) to integer</code></p>