Lecture 68: A Good Exercise in Python Programming

Nafees AI Lab

A good beginner Python exercise is to create a simple "number-guessing game" where the computer randomly selects a number, and the user tries to guess it. This exercise reinforces basic concepts like random number generation, input/output, conditional statements, and loops.

Transcript

00:00exercise solve

00:02exercise requirement

00:04is that

00:06string is mixed

00:08by capital characters

00:10and lower letters

00:12u is capital

00:14q is small letter

00:16count

00:18count

00:20and small letters

00:22very simple

00:24exercise

00:26maximum concept

00:28we will start writing the code

00:34let's go

00:36we have a string

00:38we have a string

00:40we have a string

00:42we have a function

00:44we have a function

00:46which

00:48gives us

00:50capital letters

00:52and lowercase letters

00:54we have to do

00:56we have to do

00:58two categories

01:00capital letters

01:02and lowercase letters

01:04now

01:05which data structure

01:06can be best for this job

01:08when we have categories

01:10and only count

01:12of course

01:13we can't keep the list

01:14we can't keep the list

01:16so best

01:17is the example

01:18that we have a dictionary

01:20define

01:22let's say

01:24uppercase

01:26right

01:27and

01:28give it

01:29at the moment

01:30we have zero value

01:31and

01:32define it

01:34lowercase

01:36right

01:37and

01:38at the moment

01:39zero

01:40so we have a counter

01:42uppercase

01:43and lowercase

01:44i will call letter

01:46letter

01:48and lowercase letter

01:50which we have at the moment

01:51zero

01:52so we have these letters

01:54we have to count

01:55using a function

01:56but

01:58function

01:59is basically

02:00a wrapper

02:02right

02:03so wrapper

02:04we have to talk about

02:05main code

02:06which will calculate

02:07and count

02:08for count

02:09for count

02:10for count

02:11I can do

02:12this

02:13string

02:14is simple

02:15and for loop

02:16for individual element

02:17to return

02:18when the individual element

02:19comes to a

02:20q

02:21or u

02:22then

02:23I can do

02:24that upper

02:25or lower

02:26for

02:27let's say

02:28letter

02:29in

02:30string

02:31let's say

02:32s

02:34cos

02:35and

02:36convert

02:37just like this

02:39just like this

02:40for letter

02:41in

02:42string

02:43that is

02:44for

02:45letter

02:46in

02:47string

02:48for a letter

02:49in a string

02:50for a letter

02:51in a string

02:52now

02:53I can check

02:54what capital

02:55is

02:56capital

02:57is

02:59capital

03:00or not

03:01so

03:02if

03:03letter

03:04dot

03:06is

03:07upper

03:08function

03:09which exists

03:10which we can use

03:11or not

03:12so

03:13no problem

03:14no big deal

03:15we can use

03:16methods

03:17so

03:18is upper

03:19check

03:20is upper

03:21or not

03:22simply

03:23method

03:24sorry

03:25if

03:26upper

03:27is

03:28yes

03:29if

03:30upper

03:31is

03:32then

03:33we have

03:34dictionary

03:35now

03:36counter

03:37so

03:38this

03:39dictionary

03:40is

03:41counter

03:42so

03:43counter

03:44key

03:45basically

03:46which is

03:47upper case

03:48key

03:50you can add

03:52if

03:53it

03:54is

03:55no problem

03:56I have

03:57seen

03:58that

03:59if

04:00capital

04:01is

04:02counter

04:03then

04:04counter

04:05the

04:06value

04:07return

04:08will

04:09add

04:10one

04:11okay

04:12we have

04:13left

04:14left

04:15left

04:16left

04:17left

04:18left

04:19left

04:20one

04:22in

04:23case

04:25is

04:27lower

04:29in

04:30case

04:31lower

04:34lower

04:35on

04:36lower

04:37more

04:38more

04:39more

04:40just

04:41last

04:42have

04:43Parliament

04:45I

04:46reduился

04:47유

04:48of

04:49Now, because we have show results, I will give it a basic indentation level for indentation level

04:59and here I will print.

05:02First, let's say original string print.

05:07The original string is here.

05:24Now, result print.

05:28It is very simple.

05:29I will say that the number of uppercase letters is very simple.

05:43Now, I have a list to append.

05:46So, I will say that the number of uppercase letters is very simple.

05:55If you want unserer key to the answer, you will visit.

06:09And if you want to enable the number of uppercase letters.

06:13I will 2018 author keys.

06:17danachLES are full.

06:19LOWER

06:21lower. Okay, excellent.

06:24Now we will be able to do this work

06:27that we have to do this function.

06:30Now, if I have to count a string,

06:33then I will run this function.

06:35Sorry, this code is run directly.

06:38Before I will run this raw form,

06:41then I will wrap up and then I will run this function.

06:42I will execute it.

06:44As you see, the error is R,

06:46and it says that the uppercase letter is not defined.

06:51The reason is obvious that we have to do this function.

06:56Because this is a key.

06:58Now I will pass as a variable,

07:00which again is a mistake.

07:02Now I will execute it again.

07:05Let's see.

07:06Again, we have an invalid syntax.

07:09I will add parentheses.

07:12Okay, yes, here is a problem.

07:16Here is a problem.

07:18This problem is a problem.

07:20Okay, guys.

07:21This problem is because I have single string

07:24use for both purposes.

07:26So, this is why Python is confused.

07:28So, I already discussed this problem.

07:32If you have a single string

07:34use it,

07:35then you will make sure that you have double code

07:37use it.

07:38Now it will be okay.

07:39So, I will execute it.

07:40As you see,

07:41now I have count

07:43number of uppercase letters are 9,

07:45and lower case are 24.

07:46Now I will do this.

07:47Now I will do this.

07:48Okay.

07:49So, I will execute it.

07:50As you see,

07:51now I have count

07:52number of uppercase letters are 9,

07:53and lower case are 24.

07:54Now I will do this.

07:55Here we can add two line

07:57using escape character.

07:58This is escape character.

07:59When we connect

08:01to me,

08:02we can add this to the end.

08:03It will be true

08:04that the next step is

08:05in the end of the line.

08:06Basically,

08:07I will do this.

08:08I will throw this as 2

08:09line as a result.

08:11So,

08:12I will do this last step.

08:13As you see,

08:14we have now result

08:15that will come into the end,

08:16and this will display the result.

08:17in raw form,

08:17or when I have code or string,

08:20I will run this code.

08:25I have to tell you,

08:26the basic definition of function,

08:28I can use this as a wrapper.

08:30I will tell you,

08:32I have a function define,

08:34and say,

08:36let's say,

08:38cap counter,

08:40capital letter counter,

08:42which is as a parameter,

08:44as a parameter,

08:46I will give it a string,

08:48and then it will work.

08:52What will happen?

08:54I will perform this function.

08:56I will indent this level.

08:58When I need a result,

09:00I will basically,

09:02I will call this function,

09:04and I will give it a string.

09:08I will give it a string.

09:10Now,

09:12we expect to have the same result.

09:14as you see.

09:15However,

09:16if you change the value,

09:18that will be no problem,

09:20because we have a function,

09:22and we will run this code.

09:24In fact,

09:26we can add this code,

09:28and we can access this function,

09:30and we can access this function,

09:32just like this.

09:33And our code is simple.

09:34Basically,

09:35we will manipulate this string.

09:37So,

09:38let's do this again.

09:39So,

09:40I will add this string,

09:41and I will add this string.

09:42And I will add this string,

09:43and I will add this string,

09:44and I will add this string.

09:45Let's make it more interesting.

09:47And we will add this code,

09:49as we count as a number of letters.

09:50And I will add this string.

09:51which is the upper case letters and which is the lower case letters.

09:54So, I will copy this.

09:55Now, remember that this is a multi-line string.

09:58Multi-line, single line is not.

09:59So, multi-line, what do we do?

10:01Three quotation marks, just like this.

10:04So, I will remove this.

10:06And remove this.

10:08Three quotation marks, string, and three quotation marks,

10:12close it.

10:13So, this is our code.

10:15I will convert this in multi-line string.

10:18Now, I will call this function.

10:21Let's see.

10:23Now, let's see.

10:24Our code is clearly telling us that your original code was this.

10:29And its formatting is the same.

10:31However, it says that your capital letters are 12.

10:34And lowercase letters are 272.

10:38Excellent. Congratulations guys.

10:40You have done a great job.

10:41So, here are 12s.

10:42And lowercase letters are 272.

10:46Excellent.

10:47Congratulations guys.

10:48You have done a great job.

10:49So, here are these lectures.

10:50We will close.

10:51See you in the next one.

10:52You have done a great job.

10:53You have done a great job.

10:54You have done a great job.

10:55You have done a great job.

10:56You have done a great job.

10:57You have done a great job.

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10:59You have done a great job.

11:00You have done a great job.

11:01You have done a great job.

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11:03You have done a great job.

11:04You have done a great job.

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11:06You have done a great job.

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11:08You have done a great job.

11:09You have done a great job.

11:10You have done a great job.

11:11You have done a great job.

11:12You have done a great job.

11:13You have done a great job.

11:14You have done a great job.

11:15You have done a great job.

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