1-4 Basics of Python

Type() is used to identify a type of a variable.

Types of variables

1. Int

   a = 5
   type(a)
   

   int
   

2. Float

   b = 5.0
   type(b)
   

   float
   

3. Str

   c = 'Hello'
   type(c)
   

   str
   

4. List

   list1 = [1, 2, 3, 4, 5]
   list2 = ['a', 'b', 'c', 'd', 'e']
   print(type(list1))
   print(type(list2))
   

   <class 'list'>
   <class 'list'>
   

variables should be in the square brackets.

Indexing: used to select a variable in a specific order. The order number starts with 0.

list = ['a', 'k', 'j', 'b', 's', 'v', '!']

list[0]

'a'

Append: used to add another variable to the list.

list_1 = [1, 2, 3, 4, 5]

list_1.append(155)
list_1

[1, 2, 3, 4, 5, 155]

Extend: used to merge one list with another list.

list_2 = ['a', 'b', 'c']

list_1.extend(list_2)
print(list_1)

[1, 2, 3, 4, 5, 155, 'a', 'b', 'c']