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Hi Yi,

The CLI depends on Docker's Python SDK, which in turn depends on pywin32 for Windows users. pywin32 installation requires running a post-install script, which the CLI attempts to do automatically. However, if the CLI cannot find and/or run pywin32's post-install script automatically, it prints the given warning and asks you to run it manually.

As shown in the warning message, you can do so by opening an elevated terminal (Win + X > Windows PowerShell (Admin)), navigating to the directory containing pywin32's post-install script and running `python pywin32_postinstall.py -install`.

Usually you can find pywin32_postinstall.py in the “Scripts” subdirectory of your Python environment. Assuming you use conda as environment manager, that path looks like `<conda install path>/envs/<environment name>/Scripts` (or `<conda install path>/Scripts` for conda's base environment).

I have run the python pywin32_postinstall.py -install， but still have this error

Hi Yi,

That's weird. If you just ran the post-install script, can you try restarting your computer? If that doesn't fix it, please share the path to the pywin32_postinstall.py file you ran and the output of running the command again.

When i reinstall lean cli i got this error.

distributed 1.21.8 requires msgpack, which is not installed.

conda 4.10.3 requires ruamel_yaml_conda>=0.11.14, which is not installed.

cryptography 3.3.2 has requirement cffi>=1.12, but you'll have cffi 1.11.5 which is incompatible.

docker 4.4.4 has requirement pywin32==227; sys_platform == "win32", but you'll have pywin32 223 which is incompatible.

Installing collected packages: packaging, tomli, setuptools-scm, wrapt, python-certifi-win32, dependency-injector, joblib, lxml, json5, python-dateutil, numpy, pillow, matplotlib, pandas, quantconnect-stubs, pyshortcuts, requests, click, dataclasses, pydantic, pynput, maskpass, websocket-client, docker, typing-extensions, commonmark, pygments, colorama, rich, lean

  Found existing installation: packaging 17.1

    Uninstalling packaging-17.1:

      Successfully uninstalled packaging-17.1

  Found existing installation: wrapt 1.10.11

Cannot uninstall 'wrapt'. It is a distutils installed project and thus we cannot accurately determine which files belong to it which would lead to only a partial uninstall.

You are using pip version 10.0.1, however version 21.2.4 is available.

You should consider upgrading via the 'python -m pip install --upgrade pip' command.

Then got this

python -m pip install --upgrade pip

Collecting pip

  Using cached https://files.pythonhosted.org/packages/ca/31/b88ef447d595963c01060998cb329251648acf4a067721b0452c45527eb8/pip-21.2.4-py3-none-any.whl

distributed 1.21.8 requires msgpack, which is not installed.

conda 4.10.3 requires ruamel_yaml_conda>=0.11.14, which is not installed.

cryptography 3.3.2 has requirement cffi>=1.12, but you'll have cffi 1.11.5 which is incompatible.

Installing collected packages: pip

  Found existing installation: pip 10.0.1

    Uninstalling pip-10.0.1:

      Successfully uninstalled pip-10.0.1

Successfully installed pip-21.2.4

And finally run this command

C:\Users\63036\Anaconda3\Scripts>python pywin32_postinstall.py -install

got this

c:\Users\63036\Anaconda3\Scripts>python pywin32_postinstall.py -install

Parsed arguments are: Namespace(destination='C:\\Users\\63036\\Anaconda3\\Lib\\site-packages', install=True, quiet=False, remove=False, silent=False, wait=None)

Copied pythoncom36.dll to C:\Windows\system32\pythoncom36.dll

Copied pywintypes36.dll to C:\Windows\system32\pywintypes36.dll

Registered: Python.Interpreter

Registered: Python.Dictionary

Registered: Python

-> Software\Python\PythonCore\3.6\Help[None]=None

-> Software\Python\PythonCore\3.6\Help\Pythonwin Reference[None]='C:\\Users\\63036\\Anaconda3\\Lib\\site-packages\\PyWin32.chm'

Pythonwin has been registered in context menu

Can't install shortcuts - 'C:\\Users\\63036\\AppData\\Roaming\\Microsoft\\Windows\\Start Menu\\Programs\\Python 3.6' is not a folder

The pywin32 extensions were successfully installed.

But I still got this problem

C:\Users\63036>lean

Running pywin32's post-install script at c:\users\63036\anaconda3\Scripts\pywin32_postinstall.py

pywin32 has not been installed completely, which may lead to errors

You can fix this issue by running pywin32's post-install script

Run the following command in an elevated terminal from your Python environment's Scripts directory:

python pywin32_postinstall.py -install

Usage: lean [OPTIONS] COMMAND [ARGS]...

This is my env path

Hi Yi,

Can you please try running a backtest with `lean backtest <project name> --verbose` (note the verbose flag) to see if that works correctly (and if not, what the full error is)? If that works correctly then the CLI's “is pywin32 installed”-check is broken, if it doesn't work then the pywin32 installation is probably still broken in some way.

I am encountering the same error as originally stated above. I tried to follow the instructions: Run the following command in an elevated terminal from your Python environment's Scripts directory:
python pywin32_postinstall.py -install. 

I received the following error: ImportError: DLL load failed while importing win32api: The specified procedure could not be found.

Got it working by running the post-install script in Admin mode.