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Solved: ModuleNotFoundError: No module named 'nltk'

1. Analyze the background of the problem

When using Python for natural language processing or text analysis, we often use various libraries to assist our work. Among them, nltk (Natural Language Processing Toolkit) is a popular library. However, sometimes when trying to import the nltk library, you may encounter the error "ModuleNotFoundError: No module named 'nltk'". This error usually occurs when trying to import a non-existent module.

2. Possible causes of error

1. Spelling error: The most common reason is a misspelling of the module name. In this case, it is likely that the module you want to import is a misspelling of nltk. The correct library name should be nltk.
2. Module not installed: If the module you really want to import is nltk (assuming it exists), then it may be because the module is not correctly installed in your Python environment.
3. Environment issues: Sometimes, even if the corresponding module is installed, it may not be imported correctly due to improper Python environment configuration.

3. Error code examples

The following is an example of code that may cause the "ModuleNotFoundError: No module named 'nltk'" error:

import nltk  # 错误的模块名，应该是nltk的拼写错误  
  
# 接下来的代码会因为无法导入模块而中断执行

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