missed file

tests/install_packages.py

@@ -0,0 +1,55 @@
+import subprocess
+import sys
+import importlib
+
+def check_and_install_packages(packages):
+    """
+    Checks if the specified packages are installed, and if not, prompts the user
+    to install them.
+
+    Parameters:
+    - packages: A list of dictionaries, each containing:
+        - 'module_name': The module or package name to import.
+        - 'attribute': (Optional) The attribute or class to check within the module.
+        - 'install_name': The name used in the pip install command.
+        - 'version': (Optional) Version constraint for the package.
+    """
+    for package in packages:
+        module_name = package['module_name']
+        attribute = package.get('attribute')
+        install_name = package.get('install_name', module_name)
+        version = package.get('version', '')
+
+        try:
+            # Attempt to import the module
+            module = importlib.import_module(module_name)
+            # If an attribute is specified, check if it exists
+            if attribute:
+                getattr(module, attribute)
+        except (ImportError, AttributeError):
+            user_input = input(
+                f"This program requires '{module_name}'"
+                f"{'' if not attribute else ' with attribute ' + attribute}, which is not installed or missing.\n"
+                f"Do you want to install '{install_name}' now? (y/n): "
+            )
+            if user_input.strip().lower() == 'y':
+                try:
+                    # Build the pip install command
+                    install_command = [sys.executable, "-m", "pip", "install"]
+                    if version:
+                        install_command.append(f"{install_name}{version}")
+                    else:
+                        install_command.append(install_name)
+
+                    subprocess.check_call(install_command)
+                    # Try to import again after installation
+                    module = importlib.import_module(module_name)
+                    if attribute:
+                        getattr(module, attribute)
+                    print(f"Successfully installed '{install_name}'.")
+                except Exception as e:
+                    print(f"An error occurred while installing '{install_name}': {e}")
+                    sys.exit(1)
+            else:
+                print(f"The program requires '{install_name}' to run. Exiting...")
+                sys.exit(1)