仍在 R Studio 中安装 ML-Flow

Question

请，在我在 R Studio 中加载 mlflow 库并在我的 Windows 10 机器上运行 install_mlflow(python_version = "3.6") 后，我的控制台中打印出以下消息，这似乎表明所有要求都已得到满足：

Requirement already satisfied: mlflow==1.19.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (1.19.0)
Requirement already satisfied: pandas in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (1.1.5)
Requirement already satisfied: pytz in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (2021.1)
Requirement already satisfied: packaging in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (21.0)
Requirement already satisfied: requests>=2.17.3 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (2.26.0)
Requirement already satisfied: alembic<=1.4.1 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (1.4.1)
Requirement already satisfied: entrypoints in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (0.3)
Requirement already satisfied: Flask in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (2.0.1)
Requirement already satisfied: docker>=4.0.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (5.0.0)
Requirement already satisfied: pyyaml>=5.1 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (5.4.1)
Requirement already satisfied: numpy in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (1.19.5)
Requirement already satisfied: click>=7.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (8.0.1)
Requirement already satisfied: querystring-parser in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (1.2.4)
Requirement already satisfied: prometheus-flask-exporter in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (0.18.2)
Requirement already satisfied: protobuf>=3.7.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (3.17.3)
Requirement already satisfied: sqlparse>=0.3.1 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (0.4.1)
Requirement already satisfied: sqlalchemy in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (1.4.23)
Requirement already satisfied: gitpython>=2.1.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (3.1.18)
Requirement already satisfied: waitress in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (2.0.0)
Requirement already satisfied: databricks-cli>=0.8.7 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (0.15.0)
Requirement already satisfied: cloudpickle in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from mlflow==1.19.0) (1.6.0)
Requirement already satisfied: python-editor>=0.3 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from alembic<=1.4.1->mlflow==1.19.0) (1.0.4)
Requirement already satisfied: Mako in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from alembic<=1.4.1->mlflow==1.19.0) (1.1.5)
Requirement already satisfied: python-dateutil in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from alembic<=1.4.1->mlflow==1.19.0) (2.8.2)
Requirement already satisfied: importlib-metadata in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from click>=7.0->mlflow==1.19.0) (4.8.1)
Requirement already satisfied: colorama in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from click>=7.0->mlflow==1.19.0) (0.4.4)
Requirement already satisfied: tabulate>=0.7.7 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from databricks-cli>=0.8.7->mlflow==1.19.0) (0.8.9)
Requirement already satisfied: six>=1.10.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from databricks-cli>=0.8.7->mlflow==1.19.0) (1.16.0)
Requirement already satisfied: websocket-client>=0.32.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from docker>=4.0.0->mlflow==1.19.0) (1.2.1)
Requirement already satisfied: pywin32==227 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from docker>=4.0.0->mlflow==1.19.0) (227)
Requirement already satisfied: gitdb<5,>=4.0.1 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from gitpython>=2.1.0->mlflow==1.19.0) (4.0.7)
Requirement already satisfied: typing-extensions>=3.7.4.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from gitpython>=2.1.0->mlflow==1.19.0) (3.10.0.1)
Requirement already satisfied: smmap<5,>=3.0.1 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from gitdb<5,>=4.0.1->gitpython>=2.1.0->mlflow==1.19.0) (4.0.0)
Requirement already satisfied: urllib3<1.27,>=1.21.1 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from requests>=2.17.3->mlflow==1.19.0) (1.26.6)
Requirement already satisfied: idna<4,>=2.5 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from requests>=2.17.3->mlflow==1.19.0) (3.2)
Requirement already satisfied: certifi>=2017.4.17 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from requests>=2.17.3->mlflow==1.19.0) (2021.5.30)
Requirement already satisfied: charset-normalizer~=2.0.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from requests>=2.17.3->mlflow==1.19.0) (2.0.4)
Requirement already satisfied: greenlet!=0.4.17 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from sqlalchemy->mlflow==1.19.0) (1.1.1)
Requirement already satisfied: Werkzeug>=2.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from Flask->mlflow==1.19.0) (2.0.1)
Requirement already satisfied: itsdangerous>=2.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from Flask->mlflow==1.19.0) (2.0.1)
Requirement already satisfied: Jinja2>=3.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from Flask->mlflow==1.19.0) (3.0.1)
Requirement already satisfied: MarkupSafe>=2.0 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from Jinja2>=3.0->Flask->mlflow==1.19.0) (2.0.1)
Requirement already satisfied: dataclasses in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from Werkzeug>=2.0->Flask->mlflow==1.19.0) (0.8)
Requirement already satisfied: zipp>=0.5 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from importlib-metadata->click>=7.0->mlflow==1.19.0) (3.5.0)
Requirement already satisfied: pyparsing>=2.0.2 in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from packaging->mlflow==1.19.0) (2.4.7)
Requirement already satisfied: prometheus-client in c:\users\ifeanyi\appdata\local\r-mini~1\envs\r-mlfl~1.0\lib\site-packages (from prometheus-flask-exporter->mlflow==1.19.0) (0.11.0)
[1] "mlflow==1.19.0"

尽管如此，当我运行 API 调用（例如 mlflow_ui()）时，我仍然会在控制台中打印出错误消息：

Error in rethrow_call(c_processx_exec, command, c(command, args), pty,  : 
  Command 'C:/Users/IFEANYI/AppData/Local/r-miniconda/envs/r-mlflow-1.19.0/mlflow' not found @win/processx.c:982 (processx_exec)

此外，在加载库并运行 install_mlflow() 后，代码会一直运行，直到它在我的控制台中返回错误消息：

Error: Error installing package(s): "mlflow==1.20.3"

我的机器上安装了 anaconda，我认为它应该负责 conda 的安装。请我不知道从这里去哪里。

Answer 1

mlflow 安装在 C:/Users/IFEANYI/AppData/Local/r-miniconda/envs/r-mlflow-1.19.0/Scripts 中。这就是它找不到的原因。

解决这个问题的两种方法。

1. 使用 Sys.setenv() 将 mlflow_bin 设置为 'C:/Users/IFEANYI/AppData/Local/r-miniconda/envs/r-mlflow-1.19.0/Scripts'

Sys.setenv(MLFLOW_BIN=system("which mlflow"))
Sys.setenv(MLFLOW_PYTHON_BIN=system("which python"))

1. 手动将 mlflow.exe 从 C:/Users/IFEANYI/AppData/Local/r-miniconda/envs/r-mlflow-1.19.0/Scripts 移动到 C:/Users/IFEANYI/AppData/Local/r-miniconda /envs/r-mlflow-1.19.0