• Thursday , 4 June 2020

Flask – Lecture 2 – CS50's Web Programming with Python and JavaScript

Code Canyon



00:00:00 – Introduction
00:00:48 – Python
00:01:45 – hello.py
00:03:26 – name.py
00:07:06 – variables.py
00:10:10 – conditions.py
00:12:51 – sequences.py
00:18:48 – loops0.py
00:23:26 – loops1.py
00:23:42 – sets.py
00:24:58 – dictionaries.py
00:27:57 – functions.py
00:32:12 – modules.py
00:35:56 – classes.py
00:39:17 – HTTP
00:40:25 – Flask
00:46:56 – routes0
00:52:25 – templates
00:57:14 – variables0
01:04:17 – conditions
01:11:53 – loops
01:17:48 – inheritance
01:23:00 – forms
01:33:50 – notes

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34 Comments

  1. Julia Rozanova
    April 7, 2019 at 16:37

    What text editor is he using?

  2. ТУПА АТДЫХАЕМ
    April 7, 2019 at 16:37

    Great lection, english for me is foreign languages, but I understand all, respect to lecture

  3. alaa moi
    April 7, 2019 at 16:37

    I ask about lecture0 to copy the url and paste in black screen wherr is this black i have windows thanks ..?

  4. Petar Luketina
    April 7, 2019 at 16:37

    The Flask app didn't run until I added two extra lines of code:
    if _name_ == '__main__':
    app.run(debug=True)

  5. Albert Chung
    April 7, 2019 at 16:37

    For those confused about submitting with GET, at 1:31:35 line 8 method was changed to "get"

  6. Hamroz Jumaev
    April 7, 2019 at 16:37

    1:19:49 jinja2.exceptions.TemplateNotFound: index.html
    Could any one help me to fix this
    Thanks an advance

  7. Seonguk Kim
    April 7, 2019 at 16:37

    This lecture is salvation to me. Thank you so much Brian and CS50.

  8. Jarrod
    April 7, 2019 at 16:37

    What is the syntax to take the characters from a string and store it into a list?

  9. 510dharth Shekhar
    April 7, 2019 at 16:37

    Why to use endif at 01:07:09?

  10. Rajini Raja
    April 7, 2019 at 16:37

    x = 25

    if x > 0:

    print("x is positive")

    elif x > 20:

    print("x is greater than 20")

    elif x < 0:

    print("x is negative")

    else:

    print("x is zero")

    It didn't check the second condition. why……………..

  11. Byamungu Kabiraba
    April 7, 2019 at 16:37

    At lecture 2 and I have learned so much! Can't wait for the last lecture!

  12. Yofti Milkessa
    April 7, 2019 at 16:37

    David Malan #2… But your lectures are a bit more digestible, which is nice 🙂

  13. SIlva Dexter
    April 7, 2019 at 16:37

    Have been struggling to understand POST and GET … THEN Brian comes for the rescue !!!

  14. Nureyn A
    April 7, 2019 at 16:37

    My code does not do any thing when I run in Flask-session example. Is there any further steps after installing Flask-Session?

  15. Vishnu Varthan
    April 7, 2019 at 16:37

    i wish i had a classroom like this

  16. blue bird
    April 7, 2019 at 16:37

    verry good explanations

  17. Rishabh Chopra
    April 7, 2019 at 16:37

    (When Question is asked): Great Question! So the question is ……..
    (When Question answered): Good Question….

    😀 😀 😀 😀

  18. Donald Kemp
    April 7, 2019 at 16:37

    Any published notes from this lecture? Brian is a great instructor!

  19. Sai Yerni Akhil Madabattula
    April 7, 2019 at 16:37

    this is addictive <3

  20. Sai Yerni Akhil Madabattula
    April 7, 2019 at 16:37

    for any one using sublime text and getting the below error:
    IndentationError: unindent does not match any outer indentation level
    try this:
    Set Sublime Text to use tabs for indentation: View –> Indentation –> Convert Indentation to Tabs

  21. YMA Rihab
    April 7, 2019 at 16:37

    slides pdf file on edx only has 5 pages . please fix.

  22. YMA Rihab
    April 7, 2019 at 16:37

    PROBLEM (not serious):

    I have to exit and run flask everytime i make an edit. but he just edits code saves and refreshes.
    i am using windows , using spyder editor.

  23. AK TSR
    April 7, 2019 at 16:37

    5:50 I did exact the same with no type miss but I can't run this on my Terminal using Atom. is it bug or do I have to install something to use input??

  24. yawer ali
    April 7, 2019 at 16:37

    Can anybody here help me with how to add a delete button with input type number so that it can delete.

  25. Dhrumil Barot
    April 7, 2019 at 16:37

    Aaaaammmmmmmeeeeeeezzzzzzziiiiiiiiinnnnnnggggggggg

  26. Minhaz Taher
    April 7, 2019 at 16:37

    flask jinja 2 ..too cmplex for me
    🙁

  27. Nathan Krowitz
    April 7, 2019 at 16:37

    I wish all lecturers could be this articulate. Takes complex concepts and explains them simply and succinctly.

  28. Henry Kirya
    April 7, 2019 at 16:37

    been playing around with vuejs but this makes me love flask again

  29. evans code
    April 7, 2019 at 16:37

    cool course, as is called atom themes syntax?

  30. Fandika Ikhsan
    April 7, 2019 at 16:37

    Thanks brian!

  31. Mina Emil
    April 7, 2019 at 16:37

    @1:44:00 When I tried closing my browser and reopen it, it didn't save my notes. I went further and inspected the cookie in Chrome settings, and I found that this cookie expires when the browser is closed. Did Brian change something with his Chrome that enabled to save the cookie? And coming to think about it, what are the situations where the notes are cleared other than restarting the server?

  32. sourav kumar
    April 7, 2019 at 16:37

    IT WAS REALLY HELPFUL AND BEST LECTURE ON WEB APPLICATIONS ! THANKS CS50.

  33. Shivam Singhal
    April 7, 2019 at 16:37

    I am fed up of "Hello, World" so much so that I read it as "Hello, fuckin' World". Pun intended.

    Last thing: Lectures are way too awesome.

  34. folorunso joseph
    April 7, 2019 at 16:37

    flask_session gave ModulaNotFound error because you have to first install(pip install Flask-Session) the package. Brian skipped that step in the tutorial.

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