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One hot encoding後 使用head 顯示錯誤 - Cupoy

錯誤代碼KeyError                                  Trac...

ml100-2,head,one hot encoding,ml100-2-d04

One hot encoding後 使用head 顯示錯誤

2019/04/25 08:28 AM
機器學習新手論壇
林庭延
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ml100-2
head
one hot encoding
ml100-2-d04

錯誤代碼

KeyError                                  Traceback (most recent call last)
~\Anaconda3\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
   2656             try:
-> 2657                 return self._engine.get_loc(key)
   2658             except KeyError:

pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

KeyError: 'OCCUPATION_TYPE'

During handling of the above exception, another exception occurred:

KeyError                                  Traceback (most recent call last)
<ipython-input-108-7f1da93d18f8> in <module>
      1 app_train = pd.get_dummies(app_train)
      2 print(app_train['CODE_GENDER_M'].head())
----> 3 print(app_train['OCCUPATION_TYPE'].head())

~\Anaconda3\lib\site-packages\pandas\core\frame.py in __getitem__(self, key)
   2925             if self.columns.nlevels > 1:
   2926                 return self._getitem_multilevel(key)
-> 2927             indexer = self.columns.get_loc(key)
   2928             if is_integer(indexer):
   2929                 indexer = [indexer]

~\Anaconda3\lib\site-packages\pandas\core\indexes\base.py in get_loc(self, key, method, tolerance)
   2657                 return self._engine.get_loc(key)
   2658             except KeyError:
-> 2659                 return self._engine.get_loc(self._maybe_cast_indexer(key))
   2660         indexer = self.get_indexer([key], method=method, tolerance=tolerance)
   2661         if indexer.ndim > 1 or indexer.size > 1:

pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas/_libs/index.pyx in pandas._libs.index.IndexEngine.get_loc()

pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

pandas/_libs/hashtable_class_helper.pxi in pandas._libs.hashtable.PyObjectHashTable.get_item()

KeyError: 'OCCUPATION_TYPE'

import os

import numpy as np

import pandas as pd

# 設定 data_path, 並讀取 app_train dir_data = './data/' f_app_train = os.path.join(dir_data, 'application_train.csv') app_train = pd.read_csv(f_app_train)

app_train = pd.get_dummies(app_train)

print(app_train['CODE_GENDER_M'].head())

print(app_train['OCCUPATION_TYPE'].head())


CODE_GENDER_M 能正常顯示 


為什麼OCCUPATION_TYPE 不能呢?