How to install Python modules in Dynamo Core Runtime 2.8.0?

hello,

  • EDIT 02/07/2023 : updated code
  • EDIT 11/05/2024 : update pth file edition, create dict at output

image

# More info here
# https://github-wiki-see.page/m/DynamoDS/Dynamo/wiki/Customizing-Dynamo%27s-Python-3-installation
import sys
import clr
import System
import re
print('\n'.join(sys.path))
pyEngineName = sys.implementation.name 

clr.AddReference("System.Windows.Forms")
import System.Windows.Forms
from System.Windows.Forms import MessageBox, MessageBoxButtons, MessageBoxIcon

from System.Reflection import Assembly
dynamo = Assembly.Load('DynamoCore')
dynamo_version = str(dynamo.GetName().Version)
dynamo_version = tuple(int(x) for x in dynamo_version.split("."))
print('dynamo_version', dynamo_version)
init_setup = False
if pyEngineName != "ironpython" and dynamo_version > (2,8,0,0):
    clr.AddReference('Python.Included')
    import Python.Included as pyInc
    path_py3_lib = pyInc.Installer.EmbeddedPythonHome
    import platform, os, subprocess, importlib.util
    from System import Environment
    from System.Net import WebClient
    #
    # get paths
    assert os.path.isdir(path_py3_lib)
    pipDirPath = os.path.join(path_py3_lib, 'Scripts')
    pipfilePath = pipDirPath + "\\pip"
    get_pip_path = os.path.join(path_py3_lib, 'get-pip.py')
    site_packagepath = os.path.join(path_py3_lib, 'Lib\site-packages')
    lib_path = os.path.join(path_py3_lib, 'Lib')
    #
    if not os.path.isfile(get_pip_path):
        client = WebClient()
        client.DownloadFile('https://bootstrap.pypa.io/get-pip.py', get_pip_path)
    filepy_pth = f'python{sys.version_info.major}{sys.version_info.minor}._pth'
    pthFilePath = os.path.join(path_py3_lib, filepy_pth)
    assert os.path.isfile(pthFilePath), "Error file {} not found".format(pthFilePath)
    # start update pthFilePath
    with open(pthFilePath, 'r+') as f:
        lines = f.readlines()
        for idx, line in enumerate(lines):
            if re.match(r'#import site', line) is not None:
                lines[idx] = re.sub(r'#', '', line)
                f.writelines(lines)
                break
        # add site-packages
        if re.search(r'./Lib/site-packages', lines[-1]) is None:
            f.write("\n./Lib/site-packages")
        
    # end update pthFilePath
    # install pip
    if not os.path.isdir(pipDirPath):
        #print(f'installing pip in local Python environment: {path_py3_lib}')
        print('installing pip in local Python environment: {}'.format(path_py3_lib))
        subprocess.Popen(["python", get_pip_path])
        # try to update pip
        try:
            subprocess.Popen(["python", '-m', pipfilePath, 'install', '--upgrade pip'],  cwd = path_py3_lib)
        except Exception as ex:
            print(str(ex))
        init_setup = True
        MessageBox.Show("Initialization in Progress...\nWhen installation finished, close Dynamo and relaunch this script to install packages", "Initialization In Progress...", MessageBoxButtons.OK, MessageBoxIcon.Warning)
        raise Exception("close Dynamo and relaunch this script to install packages")
    else: 
        print('pip was already installed for this local Python environment')
        init_setup = False
    # install packages
    installPackages = IN[0]
    dict_result = {"out":[], "error_warning" : []}
    if installPackages and not init_setup:
        sys.path.append(site_packagepath)
        sys.path.append(lib_path)
        for packageName in installPackages:
            spec = importlib.util.find_spec( packageName )
            if spec is None: 
                try:
                    result = subprocess.run([pipfilePath, "install", '--target='+ site_packagepath, packageName], capture_output=True, cwd = path_py3_lib)
                    #print('{} succesfully installed'.format(packageName))
                    dict_result["out"].append(result.stdout.decode('utf-8'))
                    dict_result["error_warning"].append(result.stderr.decode('utf-8'))
                except Exception as ex:
                    #print(f'error while installing {packageName}')
                    dict_result["error_warning"].append('error while installing {} , {}'.format(packageName, ex))
            else:
                #print(f"package {packageName} is already installed")
                dict_result["out"].append("package {} is already installed".format(packageName))
                
        # check result
        if False:
            import numpy as np
            import pandas as pd
        MessageBox.Show("Installation et Configuration Python terminé avec succès!", "Installation Python", MessageBoxButtons.OK, MessageBoxIcon.Information)
        OUT = dict_result, None
    
elif pyEngineName == "ironpython" and dynamo_version > (2,8,0,0):
    MessageBox.Show("Basculer ce noeud sur le moteur CPython3 puis relancer le script!", "Installation Python", MessageBoxButtons.OK, MessageBoxIcon.Warning)
    
else:
    MessageBox.Show("Installation et Configuration Python terminé avec succès!", "Installation Python", MessageBoxButtons.OK, MessageBoxIcon.Information)

13 Likes