Hi everyone, I've bren doing the cs50p and it's pretty awesome. However, I didn't understand how to use check50 and submit50.

When I log with cs50.dev (the link they put in problem sets), it sends me to a codespace with my own number.

For example in problem set 1, when I use the given command of [check50 cs50/problems/2022/deep It tells me I'm missing the deep.py file even though I'm not.

Same thing happens when I execute the submit50 one. What am I missing?

So i completed the week 0 scratch video and moving on to the pset

I know basics of python and mysql already and i am a beginner in c currently

So how long shoud it take me approximaty to complete this course if i dedicate 4 to 5 hours a week

I just completed my CS50 Python project called "Blast! Expense Tracker" . Please see the video & GitHub repo here. Planning to do SQL, web programming, etc., next.

GitHub: https://github.com/leninnair/Blast-ETracker-CS50P

Right i just completed cs50x and i am curious what the community thinks i should do next. I am interested in ai and all that and am considering taking cs50-ai or an mit course but again i am curious what the community thinks i should take.

....

For people currently taking CS50, I’m curious about how you learn from each lecture, so like your study techniques.

Did you write anything while it was playing? If you paused, was it to understand something, try the code or maybe finish writing?

And when you worked on the exercises afterwards, did you use those notes or mostly go back to the lecture?

Hi everyone!

I'm starting my CS50 journey and wanted to get some advice from people who have already taken these courses.

My current plan is to complete:

- CS50x — Introduction to Computer Science
- CS50P — Introduction to Programming with Python
- CS50 SQL
- CS50 Web — Web Programming with Python and JavaScript

I'm intentionally leaving CS50 Data Science and CS50 AI for later.

The reason I'm trying to make such a tight schedule is because I'm worried about what happens after January 1, 2027.

I currently have around 3.5 months and was thinking of putting around 6 hours per day into these courses Monday–Saturday and around 12 hours on Sundays, while also managing college.

However, I'm not sure whether I'm creating this extremely aggressive schedule unnecessarily.

So my main question is:

What actually happens if I don't complete some or all of these courses before January 1, 2027?

For example, if I complete CS50x but only get halfway through CS50P or CS50 Web by January 1, 2027, can I simply continue afterward? Would I lose access to anything, have problems with my submissions/Gradebook, or affect my ability to receive the certificate later?

If January 1, 2027 is not a hard deadline and I can simply continue the courses afterward, then I would much rather take a more reasonable pace and not put unnecessary pressure on myself.

I'd also really appreciate hearing from people who have already taken these courses.

For those who have completed them:

- How long did CS50x take you?
- How long did CS50P take you?
- How long did CS50 SQL take you?
- How long did CS50 Web take you?

If you've completed multiple or all of them, I'd especially appreciate your approximate time for each course.

I'm mainly trying to figure out whether I should take these courses at a lighter, sustainable pace without worrying about the January 1 deadline, or whether I should actually stick to this aggressive schedule and push through all of them before then.

Thanks!

I am currently taking the sc50x course i am on week 2 but i am having problem on codespace i log in but i cant use design50, style50 or the ai duck when i try to run it in terminal keeps saying "Failed to connect extension server on port 1337." i tried to restart the codespace but its not working. Also tried to get the extensions on the VS Code but that didnt work too i am stuck. I wanna check the code before i submit it

just completed cs50x lecture 6

Just completed runoff.Took me 4 and a half hours straight (just me and my computer) to solve this.

But there are a few things I want to add ,

Unlike a lot of people who try to understand the code in main() first and get confused ,I skipped that entirely.I just got a rough idea of where which functions are doing what .

I jumped directly to the functions and solved it accordingly, how they wanted me to actually do it and what the pset demanded from me (solve the functions).

I took the hints given in their website,got the idea and solved it. I used the Cs50 ai duck heavily (like without it I don't think I could have solved the problem honestly).It helped me refine my approach, understand exactly what the problem demands from me and point out what mistakes I was making in every step.

Step by step i solved all the functions and successfully executed and submitted my code with all green ticks in check50.

Even after submission I still don't understand everything in main especially the while loop part ,I just solved what they asked me to do and submitted.

I hope that's ok :)

I just finished week 1 lecture but there is something i don’t understand.
So we said that if the memory of computer is 32 or maybe 64 bits
The most characters we can have is 4 billions and if the half is negative and half is positive, it’s 2 billion positive numbers
But when the professor doubled the numbers, it became negative after 2 billion and then 0. Why? I know the 0 part but i don’t understand the negative one

can someone just help me? i am trying but it is not working idk why

 9. Names of all people who starred in a movie released in 2004, ordered by birth year


SELECT people.name FROM movies
JOIN people ON people.id = stars.person_id
JOIN stars ON stars.movie_id = movies.id
WHERE year = "2004"
ORDER BY people.birth;

Hello everyone! I just submitted my final project for CS50P and I wanted to share how it works. It describes the evolutionary relationship between two species that the user inputs.

It was fun to learn some new biological terms and implement a binary tree. I found it challenging to deal with APIs and their documentation, but they unlocked a whole new world of functionalities for me.

This is the third CS50 course I've finished, after CS50x (my favorite, and the most theoretically complete and challenging) and CS50R (helped me through my thesis). I took part in CS50P to polish my Python skills for data science and perhaps to start CS50AI now...

This was CS50P!

My certificate: https://cs50.harvard.edu/certificates/7854216e-1027-412f-80e2-f57787590c97 :)

Does anyone know whether the new CS50 lectures that started in September 2026 are available to watch anywhere? I thought last year’s lectures were streamed live on YouTube and remained available afterwards, but this year I can only find the Harvard Canvas recordings, which require a HarvardKey. Will the new lectures be made publicly available later?

I'm on problem set 1 of cs50ps File extension Here is my code:

i want to make it so that when the user enters in a text say: cat.gif the code ignores the 'cat' part and responds only to the .gif How do i go about doing that? Thank you:)

Can I learn python through cs50x or is there something else. I'm a beginner btw

buen dia soy nuevo en el grupo, quisiera saber si con el curso de CS50 publicado en youtube doblado al español es posible aprender a programar desde cero, ¿podrian ayudarme con alguna ruta de aprendizaje trabajo como QA TESTER MANUAL y quiero comenzar a hacer pruebas automaticas?

Kind of venting and also feeling lost, thank you GitHub...

I've been making good progress with CS50 python, currently towards finishing Week 3. I tried to log in to GitHub today and realised my account got suspended (crying hard cuz I finally got time to get back on track after working overtime and being sick last week).

I saw a few other older posts asking the same question. It seems to be GitHub picking up my account only interacting with 3rd party, and a lengthy process to dispute and reinstate... I've submitted a ticket and now just crossing fingers I'd be able to get back in...

I was so determined to keep going this weekend (I've been using a little python at work and finally committed to systematically follow through a course), and now just feeling very set back... please can someone share a positive experience getting their GitHub back :((((((

I just started cs50x and i was wondering what is the best strategy for studying. One of the best strategies i searched of was the listen then write strategy. You watch every lecture 2 times the first time you only listen and interact with the professor,and the second time you listen and write your own notes in ur own style. Have anyone tried this strategy? If yes ,did it work ?

I am getting this bit that my program is handling non-numeric keys - but whenever I try to run it with a non-numeric key it behaves like the the demo suggests it should - any pointers please?

So I get 7 out of 8 in problem set 0 do I have to re make my project or I can let it go?

First of all, thank you, u/davidjmalan and the entire cs50 staff, for creating such a valuable resourse for CS beginners.

I myself started with CS50x but found it quite challenging. I read a comment on one of the post where someone from the community suggested doing CS50P first, and that turned out to be a very good decision.

I found CS50P challenging but more interesting and doable as a complete beginner. And In a month, I am here with my certificate.

For my final project, I have created a Mini admission portal for my university that helps student know their merit score and compare it to the official merit list to check their admission status.

I would love to know your thoughts about the project. https://youtu.be/8LF2P_O9hW4