Hi, my name is Mosh, and I'm going to be your instructor in this Python
course. In this course, you're going to learn everything you need to get started
programming in Python. Python is one of the most popular programming languages, and
every day people use it to do cool things like automation, they use it in AI, as
well as building applications and websites like Instagram and Dropbox. So if you're
looking for a job, Python is for you. In this course I'm going to teach you
everything you need to get started with Python. We're going to talk about all the
core concepts
in Python, and then we're going to build three Python projects together.
Here's the first project we're going to build. We're going to learn how to create
this beautiful website for an imaginary grocery store. Here on the homepage we can
see all of the products in the shop, and we also have an admin area for managing
the stock. We're going to build this using a popular Python framework called
Django. Now if you have never built a website before, don't worry, I will teach you
everything from scratch.
You're also going to learn how to use Python in machine learning, or
artificial intelligence. So you will learn how to write a Python programming that
will predict the music that people like based on their profile. Just like how
YouTube recommends videos based on the videos you have watched before. I will also
show you python to automate boring repetitive tasks that waste your time. You will
write a Python program that will process thousands of spreadsheets in under a
second. I've designed this Python course for anyone who wants to learn
Python. If you're a beginner, don't worry, I will hold your hand through
this entire course. You're not too old or too young, and Python is super easy to
learn. You can write your first Python program in literally seconds. Plus I'm going
to give you plenty of exercises to help you build your confidence writing cool
Python programs. My name is Mosh, I'm a software engineer with two decades of
experience and I've taught over 3 million people how to code. I'm super excited to
be teaching you Python in this course. So I hope you stick around and learn this
beautiful
powerful programming language. In this tutorial I'm going to show you how
to download and install Python on your computer. So the first thing I want you to
do, is open up your browser and head over to Python .org. On this page click on
downloads, here you can see the latest version of Python currently, 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,
don't worry, all the materials you're going to learn in this course
will apply to the latest version of Python as well. So let's go ahead and
download Python 3, alright now, look at your downloads folder, here, we should have
Python 3 installer simply double click that, if you're on Windows you're going to
see this check box here, add Python to python, this is really important, make sure
to tick this box, otherwise you're not going to be able to follow this tutorial. If
you're on a Mac, you're going to see an installer like this, with this setup wizard
we're going to install Python 3
on our computer. So simply click continue, and again, and again, and
agree with the license agreement, and install it, this is going to take a few
seconds so I'm going to pause the recording. Alright, we have successfully
installed Python 3 on our computer. Let's close this. Alright, next we need to
install a code editor, we se a code editor to write our code, just like how we use
Microsoft Word to write documents, we use a code editor to write code. Now there
are so many code editors out there, the one that I'm going to show you in this
, tutorial is PyCharm. That is one of the most popular code editors for
writing Python code. You can get it from jetbrains.com /pycharm. Now more
accurately pycharm is considered an IDE, which is short for integrated development
environment. And that's basically a code editor on steroids, it has some additional
features that makes it really easy to write code. So let's go ahead and download
PyCharm. Now here on the download page, you can see two versions of PyCharm, one is
the professional addition
which has additional features and you have to pay for them. The other is
the community edition, that is absolutely free, and that's what we're going to use
in this tutorial. So, go ahead and download this as well. Now, once again look at
your downloads folder, once again you should have pycharm so double click this, now
if you're in Windows you're going to see an installation wizard, simply click next,
next, next until you install pycharm. If you're on Mac you need to drag and drop
this icon onto the applications folder, so drag and drop,
alright, now let's double click this to run it, 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, next you're going to see
this dialogue box for importing some settings, leave this to do not import
settings, it doesn't really matter. Okay, On this page, select I've never used
PyCharm you can see some keyword shortcuts that might be useful in the future, just
accept this, and down at the bottom,
click the next button. And then next again, one more time, and then
finally start using pycharm. So here's the main page of PyCharm every time you open
it, click on create new project, this is the location for our project, let's call
our project Hello World. Now before click and create, expand this item here, make
sure that base interpreter is set to Python 3. Python interpreter is basically a
program that knows how to execute Python code, it will know how to interpret or
translate Python instructions into instructions a computer can understand.
Now, Mac computers, by default 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 earlier we downloaded Python 3, make sure that this is set to Python
3, if not from this list, select Python 3.7. Alright, now let's go ahead and create
this project, Now here right click on Hello World folder and go to new Python
file, call this file app.py. So by convention, all Python files should have this py
extension. Alright, let's go ahead,
now let's collapse this project panel by clicking here and write our
first python program. Simply type print, pr int, all in lowercase, open and close
parenthesis, and inside these parenthesis, add quotations we can either use single
quotes or double quotes, now in between the codes write your name. I am Mosh
Hamedani, so here, so this is your first Python programming. With these piece of
code you can print your name on the screen. Now to run this, go on the top, under
the run menu, click run, also note that there is a shortcut associated with this
command, when
I program I always use shortcuts because that increases my productivity.
So here on a Mac computer, the shortcut is control, option, and R. On Windows it's
different. So let's do that, now it's asking where you want to run this, click on
app, down below, you should see this little terminal window, this is a little
window into our program, so here you can see our results for output for our
program. In the future as you learn more Python, you'll be able to build
applications that have a graphical user interface, or gooey.
That is a little bit complicated, so for now we're going to use this
little terminal window to see the results of our program. So as you can see my name
,is printed here, now as you print code, this window might get in the way so always
resize it or minimize itty putting this icon here, so this was our first python
program. Now if you didn't see the result I showed you in this video, use the
comment box below and tell me what error you encountered, I'll do my best to help
you move forward. 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. Now as part of this
tutorial you will learn how Python code gets executed and you will also learn about
a few programming terms. So press enter, and on line 2 write another print
statement, so print, open and close parenthesis, add a quotation, now here you want
to draw a dog. So, add an o, that is the head of our dog, followed by 4 hyphens. So
this is the body. alright, now one more time another print statement with
quotations, now we need to draw the legs. So add a space.
Follow it by 4 vertical bars. So, like this, so here's a little imaginary
dot. Now let's run this program and see what we get. So on the top right corner you
should see this play button, click that, there you go, so we have our name and
right below that we have our imaginary dog. Now what you need to understand here,
is that our python code gets executed line by line from the top. So earlier I told
you about Python interpreter that is the program that knows how to translate or
interpret our Python code into instructions that a computer can understand.
So when we run this program by clicking this program here, python
interpreter starts executing or running our program line by line from the top. So
first it executes line 1, then, moves onto line 2, and so on. So this is how python
programs get executed. Now let me show you something cool. Let's add another print
statement, with quotations now in between the quotations, add a star or an
asterisk, like this. Now after the quotation and before the parenthesis, add a
space, once again, add an asterisk,
space, 10. What is going on here? Well, anywhere we have quotations like
here or here we're defining a string, a string is a programming term which means a
series of characters so here we have a string, we also have a string on line 3, as
well as line 2 and line 1. Now here, we're multiplying the string by number 10. So
this is the multiplication operator, just like the multiplication operator we have
in math. So with this piece of code we can draw 10 asterisks on the terminal, let
me show you. So let's run this
program one more time, there you go. So we have 10 asterisks. Now what we
have here, this piece of code here, is called an expression. An expression is a
piece of code that produces a value. So when Python interpreter tries to execute
line 4, first it will evaluate the code that we put in between parenthesis, so we
could evaluate our expressions Our expression will produce 10 asterisks and then
those asterisks will be printed on the terminal. Now as an exercise you can use
these print statements to draw another shape, you can draw a heart, a
ball, whatever you like. I will see you in the next tutorial. One of the
questions I get a lot on my channel is how long does it take to learn Python and
become job ready? Well there is no single answer. It really depends on you and how
much effort and commitment you want to put into this. But I would say if you spend
2 hours every day consistently, after about 3 months you should be able to write
basic python programs, but quite honestly, that doesn't get you a job. In order to
get a job, you need to specialize in one area,
what do you want to use python for? Do you want to build web applications
or desktop applications? Or do you want to use it in machine learning and
artificial intelligence? So whatever you want to do you need to take additional
courses. For example if you want to become a web developer in addition to learning
, Python, you should also learn about html, some css, some JavaScript and Django
which is a popular Python framework for building web applications. Learning all
these things would take you another
6 months, so in total you need 9-12 months to become job ready. At that
point you can get a junior developer job with a salary of about 50-60 thousand
dollars a year. Now as you work more as you do more Python projects, your resume
starts to build and you can ask for $100,000 a year, or 120,000 dollars a year,
depending on where you are, what company, what geographical area, it really
depends, there is no single answer. So 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. And
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. In
this Python tutorial, you're going to learn about variables, which are one of the
most fundamental concepts in programming, they're not specific to Python, they
exist in pretty much every programming language out there. We use variables to
temporarily store data in a computer's memory. Here's an example,
let's type price = 10, when Python interpreter executes this code, it
will allocate some memory, then it will store the number 10 in that memory, and
finally it will attach this price label in that memory location. As a metahor
imagine we have a box. In that box, we have number 10 and price is the label that
we put on the box. Now we can use this label anywhere in our program to access the
value that we have in that box. This is a very simplified explanation. So now,
let's print price on the terminal. Print, now this time we're not going to
add quotations, because if we put quotations here, we will see the text
price on the terminal. Now the value of the price variable. So, put it in
quotations, and type price, now, let's run this program one more time, there you
go. So we see 10, on the terminal. So this is how we define variables, we start
with an identifier which is the name of our variable, then, an equal sign and
finally a value. Now more accurately, when this number 10 is about to be stored in
the memory, first it will get converted to this binary for presentation. So this
number 10,
is in the decimal system which has all the digits from 0 to 9. Computers
don't understand all these digits, they only understand 0s and 1s. So when we store
the number 10 in the computer's memory first it will get converted to it's binary
representation which will be a bunch of 0's and 1's, like 001, 001, whatever I
don't know. Then it will get stored in the computer's memory. So, let's take this
program to the next level. On the second line we can update the value of this price
variable, so we can reset it
to a new value like 20, now when we run our program, we should see 20,
because as I told you before Python interpreter executes our code line by line from
the top. So first we set the price to 10, then we reset it to 20, and finally we
print it on the terminal, let's run the terminal, there you go, so, we see 20 here,
okay? Now these numbers that we have here are whole numbers without a decimal
point. In programming, we refer to these numbers as integers. But integer is a
number without a decimal point. We can also use
numbers with a decimal point for example on line 2, we can define another
variable called rating and set it to number 4.9. Now in programming, we refer to
this kind of number as a floating point number of float for short. So we have
integers and floats. We can also define a variable and set it to a string, for
example, name equals Mosh, we also have another kind of value which is called
boolean, which can be true or false. They are line yes and no in English. Here is
course. In this course, you're going to learn everything you need to get started
programming in Python. Python is one of the most popular programming languages, and
every day people use it to do cool things like automation, they use it in AI, as
well as building applications and websites like Instagram and Dropbox. So if you're
looking for a job, Python is for you. In this course I'm going to teach you
everything you need to get started with Python. We're going to talk about all the
core concepts
in Python, and then we're going to build three Python projects together.
Here's the first project we're going to build. We're going to learn how to create
this beautiful website for an imaginary grocery store. Here on the homepage we can
see all of the products in the shop, and we also have an admin area for managing
the stock. We're going to build this using a popular Python framework called
Django. Now if you have never built a website before, don't worry, I will teach you
everything from scratch.
You're also going to learn how to use Python in machine learning, or
artificial intelligence. So you will learn how to write a Python programming that
will predict the music that people like based on their profile. Just like how
YouTube recommends videos based on the videos you have watched before. I will also
show you python to automate boring repetitive tasks that waste your time. You will
write a Python program that will process thousands of spreadsheets in under a
second. I've designed this Python course for anyone who wants to learn
Python. If you're a beginner, don't worry, I will hold your hand through
this entire course. You're not too old or too young, and Python is super easy to
learn. You can write your first Python program in literally seconds. Plus I'm going
to give you plenty of exercises to help you build your confidence writing cool
Python programs. My name is Mosh, I'm a software engineer with two decades of
experience and I've taught over 3 million people how to code. I'm super excited to
be teaching you Python in this course. So I hope you stick around and learn this
beautiful
powerful programming language. In this tutorial I'm going to show you how
to download and install Python on your computer. So the first thing I want you to
do, is open up your browser and head over to Python .org. On this page click on
downloads, here you can see the latest version of Python currently, 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,
don't worry, all the materials you're going to learn in this course
will apply to the latest version of Python as well. So let's go ahead and
download Python 3, alright now, look at your downloads folder, here, we should have
Python 3 installer simply double click that, if you're on Windows you're going to
see this check box here, add Python to python, this is really important, make sure
to tick this box, otherwise you're not going to be able to follow this tutorial. If
you're on a Mac, you're going to see an installer like this, with this setup wizard
we're going to install Python 3
on our computer. So simply click continue, and again, and again, and
agree with the license agreement, and install it, this is going to take a few
seconds so I'm going to pause the recording. Alright, we have successfully
installed Python 3 on our computer. Let's close this. Alright, next we need to
install a code editor, we se a code editor to write our code, just like how we use
Microsoft Word to write documents, we use a code editor to write code. Now there
are so many code editors out there, the one that I'm going to show you in this
, tutorial is PyCharm. That is one of the most popular code editors for
writing Python code. You can get it from jetbrains.com /pycharm. Now more
accurately pycharm is considered an IDE, which is short for integrated development
environment. And that's basically a code editor on steroids, it has some additional
features that makes it really easy to write code. So let's go ahead and download
PyCharm. Now here on the download page, you can see two versions of PyCharm, one is
the professional addition
which has additional features and you have to pay for them. The other is
the community edition, that is absolutely free, and that's what we're going to use
in this tutorial. So, go ahead and download this as well. Now, once again look at
your downloads folder, once again you should have pycharm so double click this, now
if you're in Windows you're going to see an installation wizard, simply click next,
next, next until you install pycharm. If you're on Mac you need to drag and drop
this icon onto the applications folder, so drag and drop,
alright, now let's double click this to run it, 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, next you're going to see
this dialogue box for importing some settings, leave this to do not import
settings, it doesn't really matter. Okay, On this page, select I've never used
PyCharm you can see some keyword shortcuts that might be useful in the future, just
accept this, and down at the bottom,
click the next button. And then next again, one more time, and then
finally start using pycharm. So here's the main page of PyCharm every time you open
it, click on create new project, this is the location for our project, let's call
our project Hello World. Now before click and create, expand this item here, make
sure that base interpreter is set to Python 3. Python interpreter is basically a
program that knows how to execute Python code, it will know how to interpret or
translate Python instructions into instructions a computer can understand.
Now, Mac computers, by default 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 earlier we downloaded Python 3, make sure that this is set to Python
3, if not from this list, select Python 3.7. Alright, now let's go ahead and create
this project, Now here right click on Hello World folder and go to new Python
file, call this file app.py. So by convention, all Python files should have this py
extension. Alright, let's go ahead,
now let's collapse this project panel by clicking here and write our
first python program. Simply type print, pr int, all in lowercase, open and close
parenthesis, and inside these parenthesis, add quotations we can either use single
quotes or double quotes, now in between the codes write your name. I am Mosh
Hamedani, so here, so this is your first Python programming. With these piece of
code you can print your name on the screen. Now to run this, go on the top, under
the run menu, click run, also note that there is a shortcut associated with this
command, when
I program I always use shortcuts because that increases my productivity.
So here on a Mac computer, the shortcut is control, option, and R. On Windows it's
different. So let's do that, now it's asking where you want to run this, click on
app, down below, you should see this little terminal window, this is a little
window into our program, so here you can see our results for output for our
program. In the future as you learn more Python, you'll be able to build
applications that have a graphical user interface, or gooey.
That is a little bit complicated, so for now we're going to use this
little terminal window to see the results of our program. So as you can see my name
,is printed here, now as you print code, this window might get in the way so always
resize it or minimize itty putting this icon here, so this was our first python
program. Now if you didn't see the result I showed you in this video, use the
comment box below and tell me what error you encountered, I'll do my best to help
you move forward. 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. Now as part of this
tutorial you will learn how Python code gets executed and you will also learn about
a few programming terms. So press enter, and on line 2 write another print
statement, so print, open and close parenthesis, add a quotation, now here you want
to draw a dog. So, add an o, that is the head of our dog, followed by 4 hyphens. So
this is the body. alright, now one more time another print statement with
quotations, now we need to draw the legs. So add a space.
Follow it by 4 vertical bars. So, like this, so here's a little imaginary
dot. Now let's run this program and see what we get. So on the top right corner you
should see this play button, click that, there you go, so we have our name and
right below that we have our imaginary dog. Now what you need to understand here,
is that our python code gets executed line by line from the top. So earlier I told
you about Python interpreter that is the program that knows how to translate or
interpret our Python code into instructions that a computer can understand.
So when we run this program by clicking this program here, python
interpreter starts executing or running our program line by line from the top. So
first it executes line 1, then, moves onto line 2, and so on. So this is how python
programs get executed. Now let me show you something cool. Let's add another print
statement, with quotations now in between the quotations, add a star or an
asterisk, like this. Now after the quotation and before the parenthesis, add a
space, once again, add an asterisk,
space, 10. What is going on here? Well, anywhere we have quotations like
here or here we're defining a string, a string is a programming term which means a
series of characters so here we have a string, we also have a string on line 3, as
well as line 2 and line 1. Now here, we're multiplying the string by number 10. So
this is the multiplication operator, just like the multiplication operator we have
in math. So with this piece of code we can draw 10 asterisks on the terminal, let
me show you. So let's run this
program one more time, there you go. So we have 10 asterisks. Now what we
have here, this piece of code here, is called an expression. An expression is a
piece of code that produces a value. So when Python interpreter tries to execute
line 4, first it will evaluate the code that we put in between parenthesis, so we
could evaluate our expressions Our expression will produce 10 asterisks and then
those asterisks will be printed on the terminal. Now as an exercise you can use
these print statements to draw another shape, you can draw a heart, a
ball, whatever you like. I will see you in the next tutorial. One of the
questions I get a lot on my channel is how long does it take to learn Python and
become job ready? Well there is no single answer. It really depends on you and how
much effort and commitment you want to put into this. But I would say if you spend
2 hours every day consistently, after about 3 months you should be able to write
basic python programs, but quite honestly, that doesn't get you a job. In order to
get a job, you need to specialize in one area,
what do you want to use python for? Do you want to build web applications
or desktop applications? Or do you want to use it in machine learning and
artificial intelligence? So whatever you want to do you need to take additional
courses. For example if you want to become a web developer in addition to learning
, Python, you should also learn about html, some css, some JavaScript and Django
which is a popular Python framework for building web applications. Learning all
these things would take you another
6 months, so in total you need 9-12 months to become job ready. At that
point you can get a junior developer job with a salary of about 50-60 thousand
dollars a year. Now as you work more as you do more Python projects, your resume
starts to build and you can ask for $100,000 a year, or 120,000 dollars a year,
depending on where you are, what company, what geographical area, it really
depends, there is no single answer. So 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. And
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. In
this Python tutorial, you're going to learn about variables, which are one of the
most fundamental concepts in programming, they're not specific to Python, they
exist in pretty much every programming language out there. We use variables to
temporarily store data in a computer's memory. Here's an example,
let's type price = 10, when Python interpreter executes this code, it
will allocate some memory, then it will store the number 10 in that memory, and
finally it will attach this price label in that memory location. As a metahor
imagine we have a box. In that box, we have number 10 and price is the label that
we put on the box. Now we can use this label anywhere in our program to access the
value that we have in that box. This is a very simplified explanation. So now,
let's print price on the terminal. Print, now this time we're not going to
add quotations, because if we put quotations here, we will see the text
price on the terminal. Now the value of the price variable. So, put it in
quotations, and type price, now, let's run this program one more time, there you
go. So we see 10, on the terminal. So this is how we define variables, we start
with an identifier which is the name of our variable, then, an equal sign and
finally a value. Now more accurately, when this number 10 is about to be stored in
the memory, first it will get converted to this binary for presentation. So this
number 10,
is in the decimal system which has all the digits from 0 to 9. Computers
don't understand all these digits, they only understand 0s and 1s. So when we store
the number 10 in the computer's memory first it will get converted to it's binary
representation which will be a bunch of 0's and 1's, like 001, 001, whatever I
don't know. Then it will get stored in the computer's memory. So, let's take this
program to the next level. On the second line we can update the value of this price
variable, so we can reset it
to a new value like 20, now when we run our program, we should see 20,
because as I told you before Python interpreter executes our code line by line from
the top. So first we set the price to 10, then we reset it to 20, and finally we
print it on the terminal, let's run the terminal, there you go, so, we see 20 here,
okay? Now these numbers that we have here are whole numbers without a decimal
point. In programming, we refer to these numbers as integers. But integer is a
number without a decimal point. We can also use
numbers with a decimal point for example on line 2, we can define another
variable called rating and set it to number 4.9. Now in programming, we refer to
this kind of number as a floating point number of float for short. So we have
integers and floats. We can also define a variable and set it to a string, for
example, name equals Mosh, we also have another kind of value which is called
boolean, which can be true or false. They are line yes and no in English. Here is
