Transcripts
1. 01 Password generator introduction: In this practice,
we want to create a Python project for
password generators. So user will run our
application and they say, what should be the length of the password and
our application, we'll give them a randomly
generated password that is hard to hack, right? So let's see how we can do that.
2. 02 Create all character variables: For creating this
password generator app. I want a combination
of lowercase letters, uppercase letters,
numbers, and symbols. So first, we should
gather all of them and randomly between them, select some part of it, right? So let's see how we can do that. For doing that, I want to go to desktop in here, right click, create a new folder
and I want to call it pass word generator, right? And with that done, I want to open that
folder in VS code. So go in here, open
folder, go to desktop, password generator,
head select folder, and know in here I want
to create a new file. I want to call it pass
Gen, right, dot PY. So with this, let me zoom a little bit so you
can see it better. First thing first,
I want to collect all the uppercase,
lowercase letters. After that, the numbers, after that, the symbols, right? So in here, I will
create a variable. I will call it
lowercase letters. Is equal to ABCD to
the end, EF GHIJ. You can just search
it in Internet, copy and paste it over here. After that, upper case
letters is equal, ABCD, EF, and so on, right? Next, I want to put the numbers. I will call this variable. Numbers is equal
a string of zero, one, two, three, four, five, six, seven, eight, nine. Next, we need the symbols. So in here, let's just
say symbols is equal, again, a string of all of these symbols.
You can add to it. You can delete some part of it. You decide what you want to do. Now we want to combine
all of these inside just one variable and randomly
pick some part of it. So in here, I will
create a new variable. I will call it all characters
is equal lowercase letters, plus we can add a
string together, concatenate them
together, right? After that upper case letters, after that numbers, right, and after that symbols. That's it. Now, let's
just show that. We say print all characters. With that done,
let's just go here, go to terminal and
create a new terminal. And in here, I want to say PY. Pass at tab after that, I will put the rest
for you, head inter. Now, you can see, we have a string that consists
of some symbol, some numbers, some upper case, and some lower case. And no, we want to randomly get some of these characters and
use it as a password. Let me show you how you
can do that in next.
3. 03 Use while loop: Know that we have
all the characters that you want to
generate password from. We need to tell the user first
what this application is. After that, tell them to
choose the password length. So in here, first thing
that I want to do, I want to change the print. I don't want to show
all the characters. I want to say, welcome to
password generator, right? After that, I want
to get the length of the password that user
want from inputs. So I will say input. And in there, I will say, how long do you want your password to be after that question mark
and after that in a space. So it looks much better. And because they will
put a number there, and we need to convert
it to a integer. So at the beginning here, we say int, so with this, we are converting whatever
they put to integer, and after that, we can save
it inside the variable. I will call it password length
is equal to this, right. Now with that done, I only
use a le loop, right. So for a vile loop,
we need a counter. So I will create
a counter first. Counter is equal to zero. And after that, use
a Wil loop while Counter is less than
password length. With that, first,
increase the counter. You can do it at the end, but in here, just
increase the counter. Counter is equal to
counter plus one. Or in a set of this, we can say counter
plus equal to one. It will do the same
for us, right? For testing that, let's just use a print and show
the counter, right? Control is to save,
no, let's just run it. And it says, Welcome
to password generator. How long do you want
your password to be? Let's just say ten.
So you can see it start let me show it to
you 1-10. That's it. No, we want to find a way to generate our password easily. And there is a library that is called Random
that you want to use. You try to do that. You
can just search in Google, search for Random
library in Python, and figure it out
how you can do that, how you can generate
the password, and we will do it in next video.
4. 04 Creating random password: No, for actually
generating our password, what I want to do, I don't
want to show the counter. In here, I want to
use random library. So first, we need to import it. At top in here, I will
say import random. That is our library
that you want to use. And with that, we have access
to the random library, and from it, what I want to use, I want to use choice, right? With this choice, we can tell it to from all the characters. Give me one character, right? So what it will do, choose a random element from
a non empty sequence. So from these characters, this choice method will randomly get one character and
give it to us in here. Now, with the return
of this choice method, we can save it
inside a variable. I will call it random. Care is equal to this. So every time it will give
us another character. Let's just show that
character print. Random car just like that. Control S to save.
Now if we run, let's just put four in there, and now you can see it
did give us uppercase Q, lowercase F,
uppercase E, and six. So it did generate a password, but we need to combine
all of them together. So for combining
them all together, we need a variable as well. So in here, let me
create a variable. I want to call it password
is equal to empty string. Now, in here, I don't want
to show the password. Each time I want to say
password is equal password, plus random character, right? So with that done, after this while loop finishes,
we can show it, right? So in here, we can
say print, password. Just like that control
as to say, no run. If you put four in there, you can see it did give us
the password completely. Let's just run it again. For example, put ten in there. Now, you can see, it's really
a good password, right? This way of doing it is good, but we can make it
more professional. How we can do it like
we did it for counter, we can say plus equal to
the random character. It will do exactly
the same thing. Let's just test that node. And if you put ten in there, you can see it did
give us a password. Now, next thing
that I want to do. I want to use FS string. So in here, I will say F
after that double quotation. And in here, your pass
word, column and space. After that, a color bracket
and show the password, right? Just like that. Now if we run, let's just put 100 this time, and you can see it did give
us a really long password. Let's just test
it one more time. Let's just put 20, for example, and now you can see
where password is this and we can copy it, right? That's a good password.
Nobody can hike that, right? Congratulations on finishing
this project as well.
Navid Ansari
