从导入TextBlob时出错

Question

在Laravel项目中运行Python脚本时，我遇到了问题。在使用虚拟和非虚拟运行python脚本时，我不会遇到这个问题。我用的是Win 10 64位。

当使用Symfony/Process在Laravel中运行python脚本时，我得到了以下错误：

"""
The command "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\env\Scripts\activate && py C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\main.py" failed.\n ◀
\n
Exit Code: 1(General error)\n
\n
Working directory: C:\xampp\htdocs\projects\laravel-project\public\n
\n
Output:\n
================\n
\n
\n
Error Output:\n
================\n
Traceback (most recent call last):\r\n
  File "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\main.py", line 10, in <module>\r\n
    from textblob import TextBlob\r\n
  File "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\env\lib\site-packages\textblob\__init__.py", line 2, in <module>\r\n ◀
    from .blob import TextBlob, Word, Sentence, Blobber, WordList\r\n
  File "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\env\lib\site-packages\textblob\blob.py", line 28, in <module>\r\n
    import nltk\r\n
  File "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\env\lib\site-packages\nltk\__init__.py", line 160, in <module>\r\n
    from nltk.downloader import download, download_shell\r\n
  File "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\env\lib\site-packages\nltk\downloader.py", line 2237, in <module>\r\n ◀
    _downloader = Downloader()\r\n
  File "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\env\lib\site-packages\nltk\downloader.py", line 443, in __init__\r\n ◀
    self._download_dir = self.default_download_dir()\r\n
  File "C:\xampp\htdocs\projects\laravel-project\scripts\sentiment\env\lib\site-packages\nltk\downloader.py", line 954, in default_download_dir\r\n ◀
    raise ValueError("Could not find a default download directory")\r\n
ValueError: Could not find a default download directory\r\n
"""

根据我的理解，nltk是textblob依赖项，但是nltk/loadloader.py在default_download_dir上返回false (但是在python中测试if条件时应该是正确的)：

    # On Windows, use %APPDATA%
    if sys.platform == 'win32' and 'APPDATA' in os.environ:
        homedir = os.environ['APPDATA']

    # Otherwise, install in the user's home directory.
    else:
        homedir = os.path.expanduser('~/')
        if homedir == '~/':
            raise ValueError("Could not find a default download directory")

这就是在我的main.py上声明textblob的方式

from textblob import TextBlob

我的其他进口产品除了这个特定的包外没有任何问题。我现在在一个路障上，所以所有的帮助都会受到感谢。

Answer 1

我从这篇文章中得到了答案：ValueError: Could not find a default download directory of nltk

我所做的是在py脚本中初始化一个NLTK_DATA环境变量。这解决了问题。

import os

os.environ['NLTK_DATA'] = os.path.abspath('../scripts/nltk_data')