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Variables in Python | Data Types | Rules For declaring variable |Storing and Printing the value of variable | Operation in variable

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What are variable As the name suggest a variable is entity whose value can be changed any time you want. In other programming language like C,C++,Java we have a special command to declare variable.In these language we also have to mention the type of value variable is storing whether its Integer,characters or decimal. But don't worry its python you don't need any command to declare a variable.Its declared when you first equate the value to a variable. X = 5              (X is treated as integer) Y = "Hello"    (Y is treated as string due to " ") Z = 5.6            (Z is treated as decimal) Datatype Data type refer to the type of value a variable is storing There are basically three type of datatype Integer --- These contains integral Data 5,4,47,100.We can     apply mathematical operation to these String  ---- These datatype contains words characters any...
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Casting in Python | Conversion of datatypes

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Casting in python Casting is conversion of value of a variable from one data type to other example -- Converting   X = 3  ( is a integer) to X = 3.0 (is a float) There are basically three types of data type Casting into integer. Casting into string. Casting into float. Casting into integer Casting float into integer or casting string into integer provided the content of string is a whole number We use int() for this type of casting. X = int(3.5)            #value of x will be 3 Y= int ("3")            #value of y will be treated as integer and we can perform arithmetic operation Z = int("hello")  #this will throw error the value is not whole number Casting into string Casting float into string or casting integer into string We use str() constructor for casting.  X = str(3)  # 3 will be considered as string and arithmetic operation ca...
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Hello world | Comments in Python | Escape character | Example | Practical Question

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Hello coders, Today we will learn to print Hello world,How to use comments in python ,Escape character,How to live a line,\n,\t,\r,Finally we will go through some practical question. Printing in Python print("hello world") Run an Online python compiler Here  and test it. Not only hello world but you can print any text in python console use print keyword. print("any text here") Printing Hello World In Python Comments in Python | why we need comments   Suppose you are writing  a Python program which is very vast.You can't remember why you have used that piece of code.Here comes the use of comment. Or suppose you have to present this code to a non technical person then you can use comments to specify why you have written that piece of code. Comments are not executed by compiler. ''' your comments go here''' Use of comment --- '' Below code is used to print hello world''...
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