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Lecture-2.pdf

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Lecture-2.pdf

  1. 1. Data Types ● Integers (int) Immutable ● Floating Points (float) Immutable ● Booleans (bool) Immutable ● Strings (str) Immutable ● Lists Mutable ● Tuples ( constant list ) Immutable ● Dictionaries Mutable
  2. 2. Variables & Assignments Variable represent labelled storage locations, whose values can be manipulated during program run. Roll_no = 41 Name = ‘Harsh’ **Python allows dynamic typing.
  3. 3. Mutable & Immutable Variables Mutable Variables can change their value in place. Immutable Variables never changes their values, they reference to a value-object. When we change value the reference address changes.
  4. 4. Some Terms def India( ): . print(“Atma Nirbhar. ”) #Boycott_China a=5 b=a+3 print(b+a) India( ) Comment Statement Indentation Function Expression Function call Block Variable
  5. 5. Age = input( ‘Enter your age : ’) default input datatype is str. print(Age) print(‘My age is : ’ ,Age) print(‘My’, ’name’, ’is’, ’Harsh’) My name is Harsh print(‘My’, ’name’, ’is’, ’Harsh’ , sep=’!’) My!name!is!Harsh Default separator is ‘space’ print(‘My’, ‘name’, ‘is’, ‘Harsh’ ,end=’-’) My name is Harsh- Default end is ‘endline’ Input & Output
  6. 6. Type Casting (Very Important) Conversion of one data type into another. There are two types : 01. Implicit Type Casting : A = 5.0 B = 4 C = A+B 02. Explicit Type Casting : A = 5.0 B = int(A)

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