OOPS with Python and packages

Chapter summary - Unit 3 File I/O: An introduction to file I/O, test files, CSV files, binary files; Exception Handling: handle a single exception, handle multiple exceptions, Two more skills; Work with a database: An introduction to relational databases, SQL statements for data manipulation, SQLite Manager to work with a database, use Python to work with a database File write modes “x” - Create - will create a file, returns an error if the file exist “a” - Append - will create a file if the specified file does not exist “w” - Write - will create a file if the specified file does not exist 1 f = open("myfile.txt", "x") This will create a file object, and operations can be made from the folllowing file object. ...

Chapter summary - Unit 2 Higher Data Constructs: Lists and tuples: Basic skills for working with lists, list of lists, more skills for working with lists, tuples; Dictionaries: get started with dictionaries, more skills for working with dictionaries; Strings: Basic skills for working with strings, split and join strings; Dates and times: get started with dates and times Text Book 1 – Chapters 6,12,10,11 Datatypes - complex Lists: A list is a mutable datatype in which all the elements are indexed from 0 to n 1 myList = [5,7,3,7] Tuples: A tuple is an immutable datatype in which all the elements are indexed from 0 to n 1 myTuple = (6,2,5,5) Dictionaries: A dictionary is a complex mutable datatype in which the elements are indexed upon the user’s needs, this is called the key value pairs. 1 myDict = {"key1":54, "key2":87} Sets: A set is a datatype of unordered, unindiexed and non-duplicated elements. 1 myset = {"apple", "banana", "cherry"} Lists in python Lists are a datatype that can hold multiple values of different datatypes and is mutable i.e. values can be changed without fundamentally changing the variable. ...

Chapter summary - Unit 4 Object Oriented Programming: Define and use your own classes: An introduction to classes and objects, define a class, object composition, encapsulation; Inheritance: Inheritance, override object methods; Design an object oriented program: Techniques for object-oriented design Text Book 1 – Chapters 14,15,16 Creating your own class A class can be created in python by using the class keyword 1 2 class MyClass: x = 5 This creates a blueprint for the objects to be defined. Methods and members can be defined in the class. ...

Chapter summary - Unit 5 Packages: How to build a GUI Program: Create a GUI that handles an event, more skills for working with components; Numpy Basics: Arrays and Vectorized Computation: Creating ndarrays, Data Types for ndarrays, Operations between Arrays and Scalars, Basic Indexing and Slicing, Indexing with slices, Boolean Indexing, Transposing Arrays and Swapping Axes; Getting started with Pandas: Introduction to Pandas Data Structures, Summarizing and Computing Descriptive Statistics, Handling missing data; Plotting and Visualization: A Brief matplotlib API Primer, Plotting Functions in panda ...

Python Chapter summary - Unit 1 Unit 1 Python Fundamentals: An Introduction to Python programming: Introduction to Python, IDLE to develop programs; How to write your first programs: Basic coding skills, data types and variables, numeric data, string data, five of the Python functions; Control statements: Boolean expressions, selection structure, iteration structure; Define and use Functions and Modules: define and use functions, more skills for defining and using functions and modules, create and use modules, standard modules Contents What is python? Python is a high level interpreted language that is preffered in rapid development of programs due to it’s easy and simple syntax. IDLE IDLE is the short form of integrated development learning environment. Data types in python int(5), string(’this is a string’ or this is a string), tuple( (5,3,5) ), float(5.3), bool(true/false) … Python interation structure Unlike other languages python uses indententation instead of using brackets. Comments Comments are a piece of code that is essentially “dead code” these are essential to show the programmer what the code does and not to do anything. Comments in python - ...