获取 NameError：名称“countVectorizer”未在 Pycharm 中定义

Question

需要帮助解决错误 NameError: name 'countVectorizer' is not defined in PyCharm

我正在尝试从此源https://github.com/chdoig/pytexas2015-ml执行 FEATURE EXTRACTION 代码

文件名：1-Feature_extraction.ipynb

import numpy as np

import pandas as pd

train_data = pd.read_csv('labeledTrainData.tsv',sep='\t')

print(train_data)

print(train_data.iloc[1].review)

test_data = pd.read_csv('testData.tsv',sep = '\t')

print(test_data)

import matplotlib.pyplot as plt

import seaborn as sns

train_data['review_len'] = train_data.review.apply(len)

len_pl = plt.hist(train_data.review_len.values)

plt.show(len_pl)

#describe negative reviews

print(train_data[train_data.sentiment==0].describe())

print(train_data[train_data.sentiment==1].describe())

#inspecting outliers

print(train_data[train_data.review_len==52].review.all())

print(train_data[train_data.review_len==13708].review.all())

#word exrtaction

from sklearn.feature_extraction.text import CountVectorizer

vocab = ['awesome', 'terrible']

simple_vectorizer = countVectorizer(vocabulary=vocab)

bow = simple_vectorizer.fit_transform(train_data.review).todense()

print(bow)

错误/警告： C:\Users\hi\PycharmProjects\Practice2\venv\Scripts\python.exe C:/Users/hi/PycharmProjects/Practice2/P1.py C:\Users\hi\PycharmProjects\Practice2\venv\lib \site-packages\sklearn\externals\joblib\externals\cloudpickle\cloudpickle.py:47: DeprecationWarning: 不推荐使用 imp 模块以支持 importlib；请参阅模块文档以了解替代用途 import imp Traceback（最近一次调用最后一次）：文件“C:/Users/hi/PycharmProjects/Practice2/P1.py”，第 32 行，在 simple_vectorizer = countVectorizer(vocabulary=vocab) NameError: name 'countVectorizer' 未定义

进程以退出代码 1 结束

Answer 1

您正在导入CountVectorizer但引用的是countVectorizer。