导入environment.yml时matlabengineforpython==R2020b安装失败求助

云原生阿岚

2026-8-9

问题：导入conda环境时matlabengineforpython==R2020b安装失败

执行conda env create -f environment.yml创建环境时，pip无法找到matlabengineforpython==R2020b包，报错：

ERROR: Could not find a version that satisfies the requirement matlabengineforpython==R2020b (from versions: none)
ERROR: No matching distribution found for matlabengineforpython==R2020b

完整执行日志如下：

C:\\Software\\srv569>conda env create -f environment.yml
Collecting package metadata (repodata.json): done
Solving environment: done


==> WARNING: A newer version of conda exists. <==
  current version: 22.9.0
  latest version: 22.11.0

Please update conda by running

    $ conda update -n base -c defaults conda


Preparing transaction: done
Verifying transaction: done
Executing transaction: done
Installing pip dependencies: \\ Ran pip subprocess with arguments:
['C:\\Software\\srv569\\Anaconda3\\envs\\research_projects\\python.exe', '-m', 'pip', 'install', '-U', '-r', 'C:\\Software\\srv569\\condaenv.0oaiyh7x.requirements.txt']
Pip subprocess output:
Collecting absl-py==1.0.0
  Using cached absl_py-1.0.0-py3-none-any.whl (126 kB)
...（省略中间包安装日志）
Collecting markupsafe==2.1.1
  Using cached MarkupSafe-2.1.1-cp38-cp38-win_amd64.whl (17 kB)

Pip subprocess error:
ERROR: Could not find a version that satisfies the requirement matlabengineforpython==R2020b (from versions: none)
ERROR: No matching distribution found for matlabengineforpython==R2020b

failed

CondaEnvException: Pip failed

解决方案

matlabengineforpython不会上传到公共PyPI源，必须依赖本地安装的对应版本MATLAB才能安装，按以下步骤处理：

步骤1：确认台式机已安装MATLAB R2020b
若未安装，需先安装MATLAB R2020b版本，确保安装时勾选了"MATLAB Engine for Python"组件（默认一般会勾选）。
步骤2：手动安装MATLAB Python引擎
1. 激活目标conda环境：
```
conda activate research_projects
```
2. 找到MATLAB安装目录下的Python引擎路径，默认路径类似：
```
C:\Program Files\MATLAB\R2020b\extern\engines\python
```
3. 进入该目录，执行安装命令：
```
python setup.py install
```
步骤3：跳过pip依赖先创建环境（可选）
如果不想中断环境创建流程，可以先跳过pip依赖创建基础环境，再手动安装引擎：
```
conda env create -f environment.yml --no-pip
```
激活环境后重复步骤2的手动安装流程。
步骤4：修改environment.yml（如果不需要对应版本引擎）
若不需要MATLAB R2020b的引擎，可直接编辑environment.yml，移除matlabengineforpython==R2020b的条目，再重新执行conda env create -f environment.yml，之后按需安装兼容的MATLAB引擎版本。

内容的提问来源于stack exchange，提问作者carsof