安装Stanza
(Debug记录）处理Stanza无法下载语言模型的错误:ConnectionError
根据官方文档进行stanza初始安装
pip install stantza
>>> import stanza
>>> stanza.download('en')
>>>nlp = stanza.pipeline('
在执行stanza.download(‘en’)报错：
ConnectionError: HTTPSConnectionPool(host='raw.githubusercontent.com', port=443): Max retries exceeded with url: /stanfordnlp/stanza-resources/main/resources_1.3.0.json (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 11004] getaddrinfo failed'))
产生此错误的原因是网络问题，有条件的直接科学上网应该就可以解决。
我这里边网络环境不允许，于是选择离线下载，并放到指定的文件夹下。
我们可以选择到github下载需要的 resource.json对应的github库为https://github.com/stanfordnlp/stanza-resources
我下载的文件为resource_1.3.0.json，下载后改名为resources.json并放置到~\stanza_resources\目录下。如果缺少该文件，你可能会遇到类似以下错误：
ResourcesFileNotFoundError: Resources file not found at: C:\Users\gz927\stanza_resources\resources.json Try to download the model again.
有了resource.json，还需要相应的 语言包，语言包相对较大，这里我们选择到huggingface去下载。对应的地址为https://huggingface.co/stanfordnlp/stanza-en。下载后解压并放置到~\stanza_resources\en\目录下
============================
如果安装了resource.json和语言包后，提示缺少某个特定的模型，产生类似下面的报错：
FileNotFoundError: Could not find model file C:\Users\gz927\stanza_resources\en\tokenize\combined.pt, although there are other models downloaded for language en. Perhaps you need to download a specific model. Try: stanza.download(lang="en",package=None,processors={"tokenize":"combined"})
则说明你下载的resouce.json和语言模型的版本不是对应的,关于版本匹配问题，一个比较粗暴的解决方案是都下载最新的版本（ 因为huggingface上的语言模型是最新的，所以我就是这样做的：把resource.json换成了最新的1.3.1版本）。下载完成后进行测试：
>>> nlp = stanza.Pipeline('en')
2021-12-11 08:06:27 INFO: Loading these models for language: en (English):
============================
| Processor | Package |
RuntimeError Traceback (most recent call last)
<ipython-input-3-543633ac586b> in <module>
| tokenize | combined |
| pos | combined |
| lemma | combined |
| depparse | combined |
| sentiment | sstplus |
| constituency | wsj |
| ner | ontonotes |
============================
2021-12-11 08:26:49 INFO: Use device: cpu
2021-12-11 08:26:49 INFO: Loading: tokenize
2021-12-11 08:26:49 INFO: Loading: pos
2021-12-11 08:26:49 INFO: Loading: lemma
2021-12-11 08:26:49 INFO: Loading: depparse
2021-12-11 08:26:49 INFO: Loading: sentiment
2021-12-11 08:26:49 INFO: Loading: constituency
2021-12-11 08:26:50 INFO: Loading: ner
2021-12-11 08:26:50 INFO: Done loading processors!
Original: https://blog.csdn.net/gz927cool/article/details/121868829
Author: gz927cool
Title: 安装Stanza(处理Stanza无法下载语言模型的错误：ConnectionError)
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