Random Resource Selection with PyVISA and IDN Retrieval

The code defines a function named random_resource_selector that uses the PyVISA library to randomly select a resource from a specified resource type and attempts to connect to the resource to retrieve its IDN (Identification Number) information.

Technology Stack : PyVISA

Code Type : The type of code

Code Difficulty : Intermediate

                
                    
import random
from pyvisa import resources

def random_resource_selector(resource_type):
    """
    Selects a random resource from the specified resource type using PyVISA.
    """
    # Define the resource manager
    rm = resources.ResourceManager()
    
    # Filter resources based on the resource type
    resources_list = rm.list_resources(resource_type=resource_type)
    
    # Check if there are any resources available
    if not resources_list:
        print("No resources found of the specified type.")
        return None
    
    # Select a random resource from the list
    selected_resource = random.choice(resources_list)
    
    # Open the selected resource
    resource = rm.open(selected_resource)
    
    # Perform a simple query to test the connection
    result = resource.query("*IDN?")
    
    # Close the resource
    resource.close()
    
    return result