1. Numeric Types (int, float, complex) whole number-integers decimal number-float real+imaginary number-complex(space is not mandatory)eg:5+2j or 5 + 2j both are same

to check what datatype we can use type()
eg:type(1)
o/p int

1. Text Type (strings)
   strings-collection of charcters,numbers,space
   using quotation we can represent a string

2. Boolean Type (bool)
   True
   False
   if loop is active or not

3. None Type (None)
   None-we cannot create a empty variable

4. How to check a data type ?
   By using type()

5. What is a variable ?
   container of data value

6. How to define it

7. valid, invalid variables
   can start or join with underscore _
   no special characters

8. assigning values
   eg:var=123
   AB 13

9. multiple assignment
   eg: name,age='AB',13 -->tuple datatype
   print(name,age)
   o/p:AB 13

10. unpacking
    eg:emp_name,emp_id=AB,1001,152
    print(emp_name,emp_id)
    o/p: ValueError: too many values to unpack

11. variable types
    from above eg1:print(type(emp_name))
    o/p:class str
    eg1:print(type(emp_id))
    o/p:class int

12. Constants
    defining a value that remains same throughout the end of the progam.
    eg:PI=3.14 this is a constant value
    constant value defined by CAPITAL LETTER

NOTE:
Python is case sensitive
dynamic datatype will allocate different memory

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