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小能豆

I got KeyError: 'text' when executing a function in Google Colab

python

This is for a movie reviews sentiment analysis project.

I imported Pandas, NLTK and Matplotlib in the beginning.

I tried to execute the below code in Google Colab:

data['text'] = data['text'].apply(clean_review)

but I got this error ..>

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)

This is the function I tried to apply for the above code ....>

def clean_review(review):
  str = ''.join(word for word in review.split() if word.lower() not in stopwords.words('english'))
  return str

I tried checking spelling mistakes in the code.


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2023-12-22

共1个答案

小能豆

The error you’re encountering is related to the KeyError, and it suggests that the column ‘text’ does not exist in your DataFrame (data). Before applying the clean_review function, you need to ensure that the ‘text’ column exists in your DataFrame.

Here are a few steps you can take to troubleshoot and fix the issue:

  1. Check DataFrame Columns: Print the columns of your DataFrame (data) to verify that the ‘text’ column exists. You can do this using:

print(data.columns)

Ensure that ‘text’ is present in the list of columns.

  1. Inspect DataFrame Head: Print the first few rows of your DataFrame using head() to visually inspect the structure of the DataFrame:

print(data.head())

Check if the ‘text’ column is present in the displayed rows.

  1. Verify DataFrame Structure: Check the structure of your DataFrame using info():

print(data.info())

This will provide information about the columns and their data types.

  1. Ensure DataFrame is Loaded: Make sure that your DataFrame (data) is correctly loaded with the data. If you are loading data from a file, ensure that the file path is correct.

  2. Case Sensitivity: Python is case-sensitive. Ensure that the column name is exactly ‘text’ and not ‘Text’ or ‘TEXT’.

Here is an example of how you can check and apply the function:

import pandas as pd
from nltk.corpus import stopwords

# Assuming data is a DataFrame with a 'text' column
data['text'] = data['text'].apply(clean_review)

After checking and verifying the DataFrame structure, if the issue persists, please provide more details about how your DataFrame (data) is created or loaded, and I’ll be happy to assist you further.

2023-12-22