accessing to dict values

 Code that modifies a collection while iterating over that same collection can be tricky to get right. Instead, it is usually more straight-forward to loop over a copy of the collection or to create a new collection:

# Create a sample collection
users = {'Hans': 'active', 'Éléonore': 'inactive', '景太郎': 'active'}

# Strategy:  Iterate over a copy
for user, status in users.copy().items():
    if status == 'inactive':
        del users[user]

# Strategy:  Create a new collection
active_users = {}
for user, status in users.items():
    if status == 'active':
        active_users[user] = status

reading a file

import os

import sys

def search_key_value(file_path, search_key):

    # Open and read the file safely using a context manager

    with open(file_path, 'r') as file:

        lines = file.readlines()

    # Create a dictionary from the parsed list

    parsed_dict = {line.strip().split(',')[0]: line.strip().split(',')[1] for line in lines}

    # Return the value associated with the search key if it exists

    return parsed_dict.get(search_key)

# Example usage:

file_path = '/var/www/html/fwlist.conf'

sound_folder = '/var/lib/asterisk/sounds/en/custom/'

search_key = sys.argv[1]

file = search_key_value(file_path, search_key)

if file:

    print(f"The value for key '{search_key}' is: {file}")

    # Check if the corresponding file exists

    file_path = sound_folder + file

    print(1 if os.path.isfile(file_path) else 0)

else:

    print(f"Key '{search_key}' not found.")

    print(0)

#############

849,hello

829,goodbye

809,version_2

searching letters on key and values of a dict

 

>>> c

{'Ambiorix': 'Rodriguez', 'Katherine': 'Maria, 'Rosa: 'Perez'}

>>> [a for  a in  list(c.keys()) if 'k'.lower() in a.lower()]

['Katherine']

>>> [a for  a in  list(c.values()) if 'R'.lower() in a.lower()]

['Rodriguez']

python-realtime-twilio-transcription

 https://github.com/AssemblyAI-Community/python-realtime-twilio-transcription/blob/main/main.py

Regular try , exception finally and Custom Exception error.

try:

    n = 10

    if n < 20:

        raise ValueError("n must be at least 20")  # Raising a ValueError with a message

except ValueError as e:

    print("An error has occurred:", e)

finally:

    print("Code completed.")

--------

Custom  Exception error.

 class CustomError(Exception):

    pass

try:

    raise CustomError("This is a custom error message.")

except CustomError as e:

    print("An error has occurred:", e)

finally:

    print("Code completed.")