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To have different Python versions without virtual environments

Download .msi or .exe files for 2.7.18, 3.0.1, 3.1.4, 3.2.5, 3.3.5, 3.4.4, 3.5.4, 3.6.8, 3.7.9, 3.8.10, 3.9.13, 3.10.11, 3.11.6, and 3.12.0 versions of Python.

Install these versions in Python_2.7.18, …, Python_3.12.0 subfolders in folder.

Prepare an Excel file named PyPacks.xlsm.

Rename the xlsm file's first sheet as Note.

In the Note sheet's A1 cell, write names of useful Python packages.

pandas matplotlib scikit-learn tensorflow asgiref audioread Babel beautifulsoup4 bokeh Cirq cmake contourpy coremltools datasets Django easygui ffmpeg Flask folium glob2 gpt-index gradio gradio_client h5py httpcore json5 jupyter jupyter-client jupyter-console jupyter-core jupyter-server jupyterlab keras Keras-Preprocessing langchain langchainplus-sdk llama-index matplotlib matplotlib-inline mysql mysql-connector mysqlclient notebook numpy oauthlib openai openapi-schema-pydantic opencv-python opencv-python-headless openpyxl pandas path pathlib2 pathspec pdfreader Pillow plotly protobuf py Pygments qiskit qiskit-aer qiskit-ibmq-provider qiskit-terra qiskit-textbook QtPy regex requests requests-mock requests-ntlm requests-oauthlib responses scikit-image scikit-learn-intelex scikit-video scipy seaborn setuptools spyder spyder-kernels sqlparse tensorboard tensorboard-data-server tensorboard-plugin-wit tensorboardX tensorflow tensorflow-addons tensorflow-estimator tensorflow-hub tensorflow-io-gcs-filesystem tensorflowjs tensorspacejs tqdm transformers wxPython

In the xlsm file, add a VBA module with the following code.

Option Explicit
Sub MacInstallPythonPackages()
    Dim sPks As String, sDir As String
    Dim sVer As Variant, sPkg As Variant
    Dim oFso As New FileSystemObject
    Sheets("Note").Select
    sPks = Cells(1, 1)
    sDir = "E:/Jupyter/Versions"
    If oFso.FolderExists(sDir) Then oFso.DeleteFolder sDir
    oFso.CreateFolder sDir
    For Each sVer In Array("2.7.18", "3.0.1", "3.1.4", "3.10.11", "3.11.6", "3.12.0", "3.2.5", "3.3.5", "3.4.4", "3.5.4", "3.6.8", "3.7.9", "3.8.10", "3.9.13")
        Open sDir & "/V" & sVer & ".py" For Output As #1
        Print #1, "#!G:/Python_" & sVer & "/python.exe"
        Print #1, "print(""Stated version: " & sVer & """)"
        Print #1, "print(""Stated folder: G:\Python_" & sVer & """)"
        Print #1, "import os, sys, subprocess"
        Print #1, "sRes = str(sys.version_info)"
        Print #1, "print(""Inferred version: "" + sRes)"
        Print #1, "sRes = os.path.dirname(sys.executable)"
        Print #1, "print(""Inferred folder: "" +  sRes)"
        For Each sPkg In Split(sPks, " ")
            Print #1, "subprocess.check_call([sys.executable, ""-m"", ""pip"", ""install"", """ & sPkg & """])"
        Next
        Close #1
    Next
    Set oFso = Nothing
    MsgBox "Done"
End Sub

Run the MacInstallPythonPackages macro from this xlsm file.

The mcaro will prepare E:\Jupyter\Versions\V2.7.18.py, …, E:\Jupyter\Versions\V3.12.0.py files, with the following codes:

#!G:/Python_<version>/python.exe
print("Stated version: <version>")
print("Stated folder: G:\Python_<version>")
import os, sys, subprocess
sRes = str(sys.version_info)
print("Inferred version: " + sRes)
sRes = os.path.dirname(sys.executable)
print("Inferred folder: " + sRes)
subprocess.check_call([sys.executable, "-m", "pip", "install", "pandas"])
…
subprocess.check_call([sys.executable, "-m", "pip", "install", "wxPython”])

In Visual Studio Code (VSC), open E:\Jupyter\Versions folder.

In VSC, for each (one by one): Open V.py file. In the left bottom corner, click gear button, and then Command Palette. In the header pull-down menu, click “Terminal: Run Active File in Active Terminal”.

This will install pandas, …, wxPython packages in Python version, in the G:\Python_\Lib\site-packages folder.