import nltk nltk.set_proxy('http://proxy.example.com:3128', ('USERNAME', 'PASSWORD')) nltk.download() Use code with caution.
Run the Install Certificates.command file. This is the most frequent fix for macOS users. nltk.download() error connecting to server
If the automated downloader continues to fail, you can bypass the server entirely by manually placing the data files in the expected directories. 1. Download the Files Manually import nltk nltk
macOS often lacks the necessary certificates to verify SSL connections in certain Python environments. import nltk nltk.set_proxy('http://proxy.example.com:3128'