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[英]TypeError: fit_transform() missing 1 required positional argument: 'X' - Running identical code & getting a unique error
[英]TypeError: fit_transform() missing 1 required positional argument: 'X'
我正在嘗試在數據集中進行特征縮放,但出現錯誤並且不知道如何繼續:
> Traceback (most recent call last):
>
> File "<ipython-input-10-71bea414b4d0>", line 22, in <module>
> x_train = sc_X.fit_transform(x_train)
>
> TypeError: fit_transform() missing 1 required positional argument: 'X'
這是我的代碼:
import pandas as pd
# Importing the dataset
dataset = pd.read_csv('Data.csv')
X = dataset.iloc[:, :-1].values
y = dataset.iloc[:, 3].values
# Taking care of missing data
from sklearn.preprocessing import Imputer
imputer = Imputer(missing_values="NaN", strategy="mean", axis=0)
imputer = Imputer.fit(imputer,X[:,1:3])
X[:, 1:3] = Imputer.transform(imputer,X[:, 1:3])
#Spliting the dataset into Training set and Test Set
from sklearn.cross_validation import train_test_split
x_train, x_test, y_train, y_test = train_test_split(X, y, test_size= 0.2, random_state= 0)
#Feature Scalling
from sklearn.preprocessing import StandardScaler
sc_X = StandardScaler
x_train = sc_X.fit_transform(x_train)
x_test = sc_X.transform(x_test)
您正在為sc_X
分配對StandardScaler
類的引用。 但fit_transform()
不是類方法,而是實例方法。 這意味着您必須創建該類的一個實例。
所以,
sc_X = StandardScaler
應該:
sc_X = StandardScaler()
imputer
是一個方法, Imputer
是一個類
因此,更改如下代碼,以及此代碼中的其他此類事件:
imputer = imputer.fit(imputer,X[:,1:3])
您需要創建類實例:
sc_X = StandardScaler()
因為fit_transform()
是實例方法而不是類方法
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