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Learn Python through the Master Guide – Python Notes for Beginner to Advanced Learners
learn python through the master guide – python notes for beginner to advanced learners
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Python Tutorial - Python Full Course for Beginners
Programming with Irfan
Mosh is a software engineer with two decades of experience and I 've taught
over 3 million people how to code. He has designed this Python course for
anyone who wants to learn Python. In this tutorial I 'm going to show you how to
download and install Python on your computer. You will learn how to use Python
in machine learning or artificial intelligence. All the materials you 're going to
learn in this course will apply to the latest version of Python as well. At the time
of recording this video the latest. version is python 3. 7. 2. Chances are in the
future , when you are watching this tutorial there is a newer version of. Python
available. The first time we run pycharm we 're going to get this warning
because this is an application that we download from the internet. So let 's go
ahead and open it every time you open it, click on create new project. Make
sure that base interpreter is set to Python 3. Mac computers come with an older
installation of Python, that 's Python 2. It 's considered legacy which means it 's
no longer maintained or supported. So by convention, all Python files should
have this py extension.
In this Python tutorial , we 're gong to take this program to the next level and
make it more interesting. So I 'm going to show you how to draw a dog hair. As
part of this tutorial you will learn how Python code gets executed and you will
also learn about a few programming terms. In the future as you learn more
Python you 'll be able to build applications that have a graphical user interface.
With this piece of code we can draw 10 asterisks on the terminal. Python
interpreter tries to execute line 4 when it executes line 4. It will evaluate the
code that we put in between parenthesis. and before the parenthesis , add a
space , once again , add an asterisk , space , 10. So let 's run this program one
more time , there you go. Are you excited to learn Python and get started on this
career path ? If you are, I would encourage you to make a commitment and
spend 2 hours every day practicing python. Use the comment box below and let
me know why you are learning Python , what do you want to do with it ? What 's
your dream job ? I would love to hear your story.
Python interpreter executes our code line by line from the top. On the second
line we can update the value of this price variable , so we can reset it to a new
value like 20. On line 2, we can define another variable called rating and set it to
number 4. 9. Now note that Python is a case sensitive language. Python is
sensitive to lower case and upper case letters. In this tutorial, I 'm going to show
, you how to receive input from the user. So we 're going to write a small program
that asks the user 's name and then we 'll print a greeting message customized
for that user. In Python we also have functions for common tasks such as
printing messages, receiving input , and so on. Mosh has created a cheat sheet
with summary notes to review the materials in this course. The link is below this
video. So I have done my best to create the best possible Python course on
Youtube. And I really appreciate it if you support my hard work by liking this
video and sharing it with others.
We 're going to write a program that will ask the year that we were born in and
then it will calculate our age and print it on the terminal. Python does n't know
what to do with subtraction. So whenever you see this message , that means
there is something wrong with your program. Python does n't know how to
interpret or how to evaluate this expression. To fix this problem we need to
convert this 1982 into an integer and then we 'll be able to subtract it from 2019
and that is easy. I want you to write a program ask the user their weight and
then convert it to kilograms. In this tutorial, you 're going to learn more about
Python strings. So I 've defined this course variable and set it to Python for
beginners. defined another variable weight_kg we set this to weight_lbs times 0.
45. And finally let 's print weight underline kg. Let 's run this Python program
and see what happens.
We use square brackets to get a character and a given index in this string. The
index of the first character in the string is 0. We can also use a negative index
here. This is one of the features that we do n't have in other programming
languages as far as I know. The square bracket syntax is pretty important if you
're preparing for online python tests or college exams. So with this syntax , you
can basically copy or clone a string. So once again the square bracket. brackets
syntax works , we can also use a similar syntax to extract a few characters
instead of 1 character. In this tutorial, we 're going to look at formatted strings
in Python programming language. Formatted strings are particularly useful in
situations where you dynamically generate some text with your variables. Let 's
say we want to print this on the terminal. So I 'm going to run this program there
you go. This is what we get.
Jon Smith is a coder. So to define formatted strings , prefix your strings with an F
and then use curly braces to dynamically insert values into your strings. This is
particularly useful when you receive input from the user. Using this , len
function we can enforce a limit on the number of characters in an input field. In
this Python tutorial we will show you some really cool things you can do with
Python strings. When a function belongs to something else or is specific to some
kind of object, we refer to that function as a method. In contrast len and print
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