Скачать или смотреть Python Programming Language | Data Types | Booleans, Lists Commands in Python | Lecture 3 |Continued

Python Programming Language: Computer Applications
Python Programming Language | Data Types | Booleans, Lists Commands in Python | Lecture 3 | Continued

Review:
In the previous video, we had seen
Python Coding:
• Launching of Anaconda navigator
• Jupyter notebook used for the presentation
Primary Data Types
• Integers
• Decimal Number - floats
• Strings

In the current video we will see two more data types:
• Booleans
• Lists

Open Jupyter Qt Console, it is one of the products which come along with Anaconda.

Boolean:-
• Boolean variable is a statement that can be either true or false.
• Boolean variables are usually used for comparison
• The comparison symbols used are as follows:
o Less than
o Less than & Equal
o Greater than
o Greater than & Equal
o Equal to
o Not Equal to
• These will become very handy when we use IF statement, and the For Loops
• Logical Arguments “And”, “Or” and “Not” are also introduced here.

Illustration of these commands in the programs:

Lists:-
• A list is a sequence of objects; they do not necessarily have to be numbers

Illustration of List in a program

Illustration of 2 lists in a program and concatenation of two lists

Range command:-
• One way to create a list in Python is using the Range command, which is very common in Python.
• Illustration of different ways of using the Range command to create List

Slicing:-
• Slicing works with List as it works with string, which we saw in the previous video – limiting the list to a certain value

Illustration of slicing
• We can change the elements in a list using this
• Multiple elements can be changed simultaneously
• We can also check if an element is present in the list
• This will be helpful when we use IF Statement and For Loop
• We can have list of Lists

Methods that go with the list:-
d.append d.count d.extend d.index d.insert d.pop d.remove d.reverse d.sort

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