phonebook program in python using dictionary

Phonebook program in python using dictionary how to#
Phonebook program in python using dictionary code#

Phonebook program in python using dictionary how to#

How to Filter and Select elements from Dictionary using Ansible select_attr.How to handle Data processing Errors with Ansible, Dict Object.A JSON data processing with Dictionary techniques and Json_query ansible.A real-time example of a complex Nested List and Dictionaries of Ansible.How to process (or) iterate through the ansible dictionary.Working with Ansible Dictionaries - Examples.

How to create List of Dictionaries in Ansible.How to Append or Add items into Ansible Dictionary.Creating a Dictionary in Ansible using the default function.Creating a Dictionary under vars section in Ansible.

Phonebook program in python using dictionary code#

If you have access to code for things like that, you can learn a lot by looking at 'real world' code (It is how I started to learn programming). Related to save: Is there a 'load' option? Can you load a different phone book if you want, or only the default?Įdit: I see there is something called 'shelve' that will handle my last two points.You need to think about how to do that: Is it automatic or is there a 'save' or 'save as' option? In the real world you would want some way to save the data for later use.In the real world you would need an 'edit' option too, though 'remove' followed by 'enter' is enough for a toy program.You will want a default branch that handles unexpected input.Instead, use a dictionary of keys and (callback) functions. if/elif/else is not the most pythonic way to handle a 'big switch statement' such as this.I would refactor the 'inner' raw_input to be inside the function to which you dispatch: The main/dispatch loop doesn't need to know what the functions do.That looks (at least approximately) correct.I am waiting for the reply as soon as possible.

At the end of the program, close the “shelve” object again. At the start of the program, open the “shelve” object – if no corresponding file is present, module shelve creates an empty “shelve”. The only differences are in the main program. So we may replace the dictionary by a “shelve”, and the functions that alter the phonebook should still work. Objects created by opening a “shelve” behave largely like dictionaries. “Persistence” means thatĭata is retained also when the program stops executing. an empty dictionary).Īdd persistence to the phonebook program by using module shelve. Initialized to “” (a pair of curly braces, i.e. Also, each function (except for help) will need a parameter for the phonebook, so supply it here already – for now, use a variable in the program that is To prepare for the next version of the program, supply the secondary input to these functions now. The actual functions of the final program will be filled in during the next block ofĪssignments. Quit: no secondary input the program ends Remove: secondary input is a name the (final) program removes the name (if any) and Lookup: secondary input is a name the (final) program looks up the number for that nameĮnter: secondary input consists of a name and a phone number the (final) program Help: no secondary input the program just prints information about available For some primary inputs, the program asks secondary input: “help”, “lookup”, “enter”, “remove”, and “quit”. The program should repeatedly ask the user for input. I am a new programmer and i have a task to make a phonebook with python.