[小白系列]安装sentence-transformers

python环境为3.13.1执行 pip install sentence-transformers 总是报以下问题

ERROR: Cannot install sentence-transformers==0.1.0, sentence-transformers==0.2.0, sentence-transformers==0.2.1, sentence-transformers==0.2.2, sentence-transformers==0.2.3, sentence-transformers==0.2.4, s
entence-transformers==0.2.4.1, sentence-transformers==0.2.5, sentence-transformers==0.2.5.1, sentence-transformers==0.2.6.1, sentence-transformers==0.2.6.2, sentence-transformers==0.3.0, sentence-transfo
rmers==0.3.1, sentence-transformers==0.3.2, sentence-transformers==0.3.3, sentence-transformers==0.3.4, sentence-transformers==0.3.5, sentence-transformers==0.3.5.1, sentence-transformers==0.3.6, sentenc
e-transformers==0.3.7, sentence-transformers==0.3.7.1, sentence-transformers==0.3.7.2, sentence-transformers==0.3.8, sentence-transformers==0.3.9, sentence-transformers==0.4.0, sentence-transformers==0.4
.1, sentence-transformers==0.4.1.1, sentence-transformers==0.4.1.2, sentence-transformers==1.0.0, sentence-transformers==1.0.1, sentence-transformers==1.0.2, sentence-transformers==1.0.3, sentence-transf
ormers==1.0.4, sentence-transformers==1.1.0, sentence-transformers==1.1.1, sentence-transformers==1.2.0, sentence-transformers==1.2.1, sentence-transformers==2.0.0, sentence-transformers==2.1.0, sentence
-transformers==2.2.0, sentence-transformers==2.2.1, sentence-transformers==2.2.2, sentence-transformers==2.3.0, sentence-transformers==2.3.1, sentence-transformers==2.4.0, sentence-transformers==2.5.0, s
entence-transformers==2.5.1, sentence-transformers==2.6.0, sentence-transformers==2.6.1, sentence-transformers==2.7.0, sentence-transformers==3.0.0, sentence-transformers==3.0.1, sentence-transformers==3
.1.0, sentence-transformers==3.1.1, sentence-transformers==3.2.0, sentence-transformers==3.2.1, sentence-transformers==3.3.0 and sentence-transformers==3.3.1 because these package versions have conflicti
ng dependencies.To fix this you could try to:
1. loosen the range of package versions you've specified
2. remove package versions to allow pip to attempt to solve the dependency conflictERROR: ResolutionImpossible: for help visit https://pip.pypa.io/en/latest/topics/dependency-resolution/#dealing-with-dependency-conflicts

指定版本后还是报这个问题。命令如下：pip install sentence-transformers==3.1.1。

运行 conda install -c conda-forge sentence-transformers 也无法成功。

调整Python版本。创建python 3.11版本的环境后，再使用conda install -c conda-forge sentence-transformers即可。

conda创建python 3.11版本的环境命令：conda create --name python311 python=3.11

代码

# coding:utf-8
from sentence_transformers  import SentenceTransformer# 使用GPU（如果可用）
model_name = 'all-MiniLM-L6-v2'
model = SentenceTransformer(model_name, device='cpu')
# 示例句子
sentences = ['This is an example sentence.', 'Each sentence is converted.']
# 计算嵌入
embeddings = model.encode(sentences)similarities = model.similarity(embeddings, embeddings)
print(similarities)

model.similarity()方法为sentence-transformers 新加的方法，版本太低可能会该方法不存在，我使用的版本是3.3.1。

查看版本方法：

 pip show sentence-transformers

Name: sentence-transformers
Version: 3.3.1
Summary: State-of-the-Art Text Embeddings
Home-page: https://www.SBERT.net
Author:
Author-email: Nils Reimers <info@nils-reimers.de>, Tom Aarsen <tom.aarsen@huggingface.co>
License: Apache 2.0
Location: D:\ProgramData\anaconda3\envs\python311\Lib\site-packages
Requires: huggingface-hub, Pillow, scikit-learn, scipy, torch, tqdm, transformers
Required-by: