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[Intro Music]

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We have just successfully launched

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our tiny Python application using a

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python container. And here is

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command that was used for that,

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'docker', it means that we run

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command from Docker client; 'run', we

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run specific container; '-i'

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and '-t' options tell that we

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open interactive session with pseudo-TTY

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to specific process inside of

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the container, and that is 'python3'

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process, next we map

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volume, here we use the variable

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and here inside of the container,

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we have specified that we want to

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map this volume to 'app' folder

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inside of the container. Also, we

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have specified the working

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directory inside of the container.

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Next here is image name. And

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finally, we have overridden default

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command, default command is 'python3',

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and we have told the in this

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command that we want to execute

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this file using 'python3'

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instead. And we have got the

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result. And now it's challenge

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time. It doesn't matter actually,

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whether you know Python or not,

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this challenge is very simple and

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you will be able to accomplish it

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for sure. Just do some research,

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and afterwards create custom

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application. Name of this

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application is calendar, and you

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need to create a new file inside of

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the 'python' folder with name

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'calendar-app.py'. And you will run

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this 'calendar-app.py' file

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using Python3 interpreter, same

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as we did with 'hello-world.py' file,

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it means that if I clear

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terminal, you will need to execute

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this file like so, instead of hello-

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world, will be calendar-app, and

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if you run this file, you will see

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following prompt, 'Welcome to the

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Calendar application!', and next you

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will see prompt, 'Please enter any

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year:' . Let me enter for example 2025

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like so. Next, 'Please enter any

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month number:', from 1 till 12. Let's

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enter 10. And after getting those

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two numbers from input 2025 is the

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year, and 10 is the month number;

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this program will print

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such month view, it is October

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2025 in my case. And afterwards it

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will print 'Have a nice day!', and

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terminate process. And of course

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afterwards, if I list the

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containers that are currently

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running, I will see empty output

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because this container did its job,

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and it was terminated. Small hint

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for this tiny program you will need

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to use the 'calendar' module that is

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actually built into the Python

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module. I wish you good luck, and

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next I'll give you a solution to

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this challenge. See you next. Bye-Bye.

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[no audio]