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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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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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List in Python | Adding item | Removing item | Length of List | Frequency of an Element |Sorting of list |Conversion from list to string

Creating list list1 = ["first","second","Third"] print(list1) list2 = [1,2,3,4] print(list2) Accessing elements of list We should keep in mind that first element in a list is referred as the 0th element second as 1st and so on. X = list1[0] Y = list2[0] print(X) print(Y) Changing element value   list1[1] = "forth"  #position of element is given list2[2] = 4 Adding element in list At last of list list1.append("fifth") list2.append(5) At specific position listname.append(position,value) list1.insert(3,"sixth") list2.insert(3,6) Removing element of a list Using list.remove()  this method remove element with its value list1.remove("second") list2.remove(2) using pop() method this method remove element at specified position.If position is not mentioned method will remove the last element. list1.pop(2) list2.pop(3...
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