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https://github.com/ccozad/python-playground

A collection of random Python solutions
https://github.com/ccozad/python-playground

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A collection of random Python solutions

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# Overview

 A collection of random Python solutions. If anything helps you here please give this repo a star.



 See commentary and other material on the [Think Create Repeat YouTube Channel](https://www.youtube.com/channel/UC1g9I6VprOjOn48jWC0mzmA)



# General Setup

It's recommended that you use a virtual environment to run each group of scripts. Each folder has its own requirements.txt file. the process for setting up your environment look like



 - Move to the topic folder

   - `cd `

 - Create a virtual environment

   - On Mac: `python3 -m venv .venv`

   - On Windows: `python -m venv .venv`

 - Activate the virtual environment

   - On Mac: `source .venv/bin/activate`

   - On Windows: `.venv\Scripts\activate`

 - Install dependencies

   - On Mac: `pip3 install -r requirements.txt`

   - On Windows: `pip install -r requirements.txt`

 - Call a specific script

   - On Mac: `python3 .py`

   - On Windows: `python .py`

 - Deactivate virtual environment

   - `deactivate`



See this video for additional commentary on [Python Dev Environment Setup](https://www.youtube.com/watch?v=tk5WHjVuC4Q)



# Testing



 - *Create a virtual environment*

   - On Mac: `python3 -m venv .venv`

   - On Windows: `python -m venv .venv`

 - *Activate the virtual environment

   - On Mac: `source .venv/bin/activate`

   - On Windows: `.venv\Scripts\activate`

 - *Install dependencies*

   - On Mac: `pip install -r requirements.txt`

   - On Windoes: `pip install -r requirements.txt`

 - *Run tests*

   - `pytest -rA`



# Topics

Here's what you can find here:



## [Algorithms](/algorithms/)

- [Binary search](/algorithms/binary_search_client.py) an efficent search within sorted lists

- [Binary search tree](/algorithms/binary_tree.py) a specially organized binary tree that allows divide and conquer searches

- [Hamming distance](/algorithms/hamming_distance.py) Number of positions in which symbols differ for two equal length strings

- [Inorder tree traversal](/algorithms/binary_search_tree_walker.py) Traverse a binary search tree inorder to list nodes in sorted ascending order

- [Merge sort](/algorithms/merge_sort_client.py) an efficient way to sort a list

- [Reverse inorder tree traversal](/algorithms/binary_search_tree_walker.py) Traverse a binary search tree in reverse inorder to list nodes in sorted descending order



## [AWS](/aws/)

 - [DynamoDB](/aws/dynamodb/) fully managed NoSQL database service

   - [Create tables](/aws/dynamodb/create_tables.py) 

   - [List tables](/aws/dynamodb/list_tables.py) 

   - [Put items](/aws/dynamodb/put_items.py)

   - [Scan items](/aws/dynamodb/scan_items.py)



## [Azure](/azure/)

 - [Blob storage](/azure/blob_storage/) ubiqutous file storage on Azure

   - [Create container](/azure/blob_storage/create_container.py) 

   - [List containers](/azure/blob_storage/list_containers.py) 

   - [Upload blob](/azure/blob_storage/upload_blob.py) 

   - [List blobs](/azure/blob_storage/list_blobs.py) 

   - [Download blob](/azure/blob_storage/download_blob.py)

 - [Key vault](/azure/key_vault/) secret storage and crypto operations on Azure

   - [Set secret](/azure/key_vault/set_secret.py)

   - [Get secret](/azure/key_vault/get_secret.py)



## [Data Science](/data_science/)

 - [Load CSV into a pandas dataframe](/data_science/load_csv.py) 

 - [Group data and then find statistics for each group](/data_science/stats_by_group.py)



## [Games](/games/)

 - Boards

   - [2D grid](/games/boards/grid_2d.py) A simple representation of a 2D grid board that can be used for games like tic-tac-toe or checkers

   - [Tic-tac-toe board](/games/boards/tic_tac_toe_board.py) A board based on a 2D Grid that is specialized for the rules of tic-tac-toe

 - Cards

   - [Card deck](/games/cards/card_deck.py) A collection of cards that can be shuffled and dealt

   - [Card deck factory](/games/cards/card_deck_factory.py) A simplified way to construct various types of card decks

   - [Playing card](/games/cards/playing_card.py) A representation of a standard playing card

 - Clients

   - [Tic-tac-toe client](/games/game_clients/tic_tac_toe_client.py) Play tic-tac-toe using a simple command line client

 - Other

   - [Rubiks Cube Simulator](/games/rubiks_cube/rubiks-cube-2x2.py) Simulate moves on a 2x2 Rubik's cube



## [Interview Questions](/interview_questions/)

 - [Fizz buzz](/interview_questions/fizz_buzz.py) A test that makes sure you can apply simple rules and cover all cases

    - [Fizz buzz video tutorial](https://www.youtube.com/watch?v=8Kc7iAyuIkU)

 - [Largest common prefix](/interview_questions/largest_common_prefix.py) Consider what it means to have a common prefix and carfully enumerate the collection and individual characters of each word

 - [Reverse linked list](/interview_questions/reverse_linked_list.py) Reason about interactions with a data structure and carefully manipulate how the data is organized

 - [Reverse string](/interview_questions/reverse_string.py) Understand how to split and join on delimiters 

 - [Swap numbers](/interview_questions/swap_numbers.py) Write a few cryptic calculations to placate an interviewer trying to trick you

 - [Two sum](/interview_questions/two_sum.py) Simplify the problem space to find two numbers in a list that add up to a given number

 - [Valid parens](/interview_questions/valid_parens.py) Check for valid brackets sequences by tracking nesting using a stack



## [Math](/math/)

 - [Break even graph](/math/break_even_chart.py) Visualize where sales break even with costs

 - [Multiply matrices](/math/multiply_matrices.py) Solve a system of linear equations using matrices

 - [Pie chart](/math/pie_chart.py) Use a math plotting library to create a pie chart and save it to a file

 - [Plot Vectors](/math/plot_vectors.py) Use a math plotting library to plot and annotate vectors



## [PDF](/pdf/)

 - [Extract images from a pdf](/pdf/extract_images.py) Use pyMuPDF to extract imges from all pages

 - [Extract metadata from a pdf](/pdf/extract_metadata.py) Use pyMuPDF to extract metadata from all pages

 - [Extract pages from a pdf](/pdf/extract_pages.py) Use pyMuPDF to extract all pages and render the contents as an image

 - [Extract text from a pdf](/pdf/extract_text.py) Use pyMuPDF to extract text from all pages



## [Standard Library](/standard_library/)

 - [Base64 encode and decode](/standard_library/base64_example.py) A way to represent binary information using plain text

 - [JSON encode and decode](/standard_library/json_example.py) A way to share data structures across languages and systems

 - [Process command line arguments](/standard_library/argparse_example.py) Parse command line arguments using argparse

 - [Universally Unique ID](/standard_library/uuid_example.py) A standards based mechanism for generating unique ids

 - [Working with dates](/standard_library/datetime_example.py) Different ways to work with dates



## [Video](/video/)

 - [Extract frames from a video](/video/extract_video_frames.py) Use OpenCV to extract frames from a video

 - [Combine images into a video](/video/video_from_images.py) Use OpenCV to combine images into a video file

 - [List video properties](/video/video_properties.py) Use OpenCV to list properties such as frame rate, width, height and total frames



## [Web](/web/)

 - [Flask](/web/flask/)

   - [File uploads](/web/flask/file_uploads/app.py) A reference for uploading a file and saving it to a random name

   - [HTTP methods](/web/flask/http_methods/app.py) A compact reference for using common HTTP methods such as GET, POST, PATCH and DELETE

      - [HTTP methods video tutorial](https://www.youtube.com/watch?v=8pZwHItj0tg)

   - [SQL database](/web/flask/sql_database/) CRUD operations with a database over a REST API

 - Django

   - Coming soon!



# Support

 - How do I request a change?

   - Please submit an issue or a pull request

 - How fast will my request be added?

   - Probably not very fast for requests outside of a support package because this repo is maintained by a working professional

   - If you require fast, predictable responses, please purchase a support package

 - Can support packages be purchased?

   - Yes, various support packages can be purchased and customized for your needs. Support areas available include:

   - On demand support videos

   - 1:1 and team coaching

   - New features and other modifications



## License



Licensed under



 - MIT license

   ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT)