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FUNCTIONS Functions are the already defined part of the program which can be recalled from other parts of the program as many times as needed. Functions plays an important role in helping to reduce the program code. Function has basic three parts: 1. Function Definition 2. Function Call 3. THE FUNCTION DEFINITION The FUNCTION DEFINATION: The function definition deals with purpose/task of the function. It tells the python what the function does. Syntax: Def function_name(arguments): Function body. Example: Def Add(a,b): Print(a+b) Arguments are the variables used in function. You cannot skip variable name in function definition. THE FUNCTION CALL Function call passes the variable values to function definition, the number of values must match the number of parameters. Syntax: Function_name(values) Example: Add (5,6) Gives output 11 RETURN STATEMENT : Return statement can be used to return function result to function call: Def add(a,b): Return (a+b) Now return sends the value of sum back ...

Loop STATEMENTS The Loop statements allow a set of instructions to be performed repeatedly until a certain condition is fulfilled. The iteration statements are also called loops or looping statements. THE FOR LOOP The for loop is the easiest to understand of the python loops. Syntax: For I in range(lowerlimit,upperlimit): Loop Body The program will run until I value becomes equal to upperlimit – 1. Example: For I in range(1,5): Print(“Hello”) This program will print Hello 4 times, ie from 1 to 4 (upper limit-1)  I value will start as 1 then loop body will get executed and I value will be incremented. This keeps on taking place until I ==upper limit-1 . After that the program comes out of loop body. THE WHILE LOOP The second loop available in python is the while loop. The while loop is an entry controlled loop. The syntax of a while loop is while (expression): Loop-body Where loop body keep on getting executed until the expression becomes false. When the expression becomes false, th...

Conditional STATEMENTS Normally, the statements are executed sequentially as written in the program (i.e. Top to bottom). This is known as the normal flow of control. But sometimes the operational flow of control has to be altered depending upon a condition. The statements that allow to do so, are known as selection statements. Most important selection statement that python offers is the If statement. Selection statements are also known as conditional statements or decision statements. THE IF STATEMENT An if statement tests a particular condition; if the condition evaluates to true, a course of action is followed i.e. a statement of a set of statements is executed. If the condition is false the course of action is ignored. The syntax of if statement is as shown below: if (expression) : Statement THE ELIF STATEMENT In some cases the program requires you to write multiple if statements. This results in many condition evaluations thus slowing up the program. So to avoid th...

                           Python Basics What is VARIABLES in Python? As the name implies the meaning, a variable is something which can be change. A variable is a way of referring to a memory location used by a computer program. A variable is a symbolic name for this physical location. This memory location contains values, like numbers,text or more complicated types. Variables can be treated as a container which can store some value in it. In any other languages for example C++, This is how you write a variable int a = 20 Where int is data type of the variable. Int stands for integer. String refers to text or collection of characters. It is represented in single quotes or double quotes. Float refers to decimal point numbers. In Programming languages like C++ you have to specify the data type of a variable. But in python you don’t have to worry about data type. Whatever value  you give the variable, py...

Welcome to our first lesson, First of all we have to install python, so you have to install Pycharm on your computer and python if it is not already installed. Here are the download links, you can install these from these links. Download Link: Python: https://www.python.org/downloads/ Pycharm: https://www.jetbrains.com/pycharm/download/ Here are the steps to download for the windows: 1. Double-click pycharmEDU.exe file to launch the installer. Your computer will verify the installer: Now the first page of installation wizard will open: Click the Next Button. 2. On the Choose Install Location screen, specify the destination directory where the product will be installed. The installation wizard will suggest a default location. To choose a custom location, click Browse and select the desired location in your file system. When ready, click next. 3. On the Installation Options screen, specify the following options: o Create Desktop shortcut: if you select t...