작업형2 모의문제 1

코랩으로 입력중인데

from sklearn.preprocessing import LabelEncoder cols = ['Gender','Education_Level','Marital_Status','Income_Category','Card_Category'] for col in cols: le=LabelEncoder() train[col] = le.fit_transform(train[col]) test[col] = le.transform(test[col]) target = train.pop('Attrition_Flag')

에러가 나와요 왜그런거죠

KeyError Traceback (most recent call last)

/usr/local/lib/python3.10/dist-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance)

3801 try:

-> 3802 return self._engine.get_loc(casted_key)

3803 except KeyError as err:

6 frames

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: 'Attrition_Flag'

The above exception was the direct cause of the following exception:

KeyError Traceback (most recent call last)

/usr/local/lib/python3.10/dist-packages/pandas/core/indexes/base.py in get_loc(self, key, method, tolerance)

3802 return self._engine.get_loc(casted_key)

3803 except KeyError as err:

-> 3804 raise KeyError(key) from err

3805 except TypeError:

3806 # If we have a listlike key, checkindexing_error will raise

KeyError: 'Attrition_Flag'