2. Branching and Iteration

MIT 6.0001 Introduction to Computer Science and Programming in Python, Fall 2016
Instructor: Dr. Ana Bell

In this lecture, Dr. Bell introduces strings and indentation in Python, then discusses basic features of programmatic logic, such as branching, conditionals, iteration, and loops.

License: Creative Commons BY-NC-SA

[walawave]

To whoever made the subtitles for this 40+ minutes video. Thank you.

[flvsedl]

pre labeling
​0:02:08​ Strings
0:03:48 (Coding)
0:06:31 Input/Output:print
0:08:21 (Coding)
0:09:57 Input/Output:(" ")
​0:12:14 (Coding)
​0:14:00​ Comparison operators on int, float, string
0:17:06 MIT map
0:18:00
0:19:58 Control flow - branching
0:20:00 0:22:00
0:24:51 ​Indentation
0:25:46 =vs== 0:28:00​
0:28:58 Control flow : while loops
0:31:57 Control flow : while and for loops
0:35:09 ​Control flow : loops
0:36:44 range (start, stop, step)​ 0:38:00​
0:39:42 (Coding)
0:41:06 break Statement
0:42:26 for vs while loops

[osamakamal]

Love MIT for their CS OCW!!! One comment to add here. When you ask Python to compare two strings (like mentioned in the video "a" > "b" and the result is False) in the backend, Python is comparing their ASCII values (ASCII value of "a" = 97 and ASCII value of "b" = 98. Hence False)

[bjr]

Kind of wish I got to experience CS at MIT. I loved my professors but this is a professor I know I'd like and learn alot from. Plus MIT's reputation is unmatched.

[oneofthesidemen]

THANK YOU, MIT COURSEWARE and sponsors! ❤️

[PeejTastic]

Me and a fellow colleague are leaping into Python (my native language being R). The lecture videos are well-paced and the lecturing style is top notch! I lecture the occasional statistical programming course, and it's not always easy to keep it interesting and engaging like it is here.

[diggitycat]

For those curious about how Dr. Bell commented out certain lines of code here's the shortcut list,

Single line comment

Ctrl + 1

Multi-line comment select the lines to be commented

Ctrl + 4

Unblock Multi-line comment

Ctrl + 5


P.S: Got this from Stack Overflow so due credit to the actual authors for this query.

[hemarathroy]

I am very lucky and happy to see the smiley, energetic and enthusiastic face of ANA mam, when she tried to listen the question that the student asks.BUT AT OTHER PLACES, THIS HAPPENS RARELY BUT NOT IN MIT.

[danielkinyanjui]

You're a good teacher, accessible yet giving your students a chance to learn.

[DarthAbhi]

Dr.Bell, can't thank you enough for the great explanation.

[mahiee]

Had somebody taught flow control statements as clearly as Dr.Bell my coding journey would have been at stratospheric levels...these lecture ignited my hopes of becoming a good programmer...

[vishalmalaye]

Dr. Ana Bell is great teacher.❤❤❤ You are very good at explaining and in all perspective. You are best.Thanks MIT for Dr. Ana Bell.
Thanks MIT for OCW.MIT is best and doing great work.

[unrockbaer]

Really liked the Zelda example, loved the flipping table :) Well played, Dr. Bell!

[barlov_filange]

The idea behind ocw is profound. By distributing knowledge to the whole world for free, MIT is paying tribute to the geniuses like faraday, curie, ramanujan etc... Who produced phenomenal works despite of not having the proper access to the knowledge they needed.

[DanielFerreira-gudi]

Really good for a start with Python. Great work Dr. Bell (and Professor Grimson).

[xiaoningdong]

She is so adorable， I really love her lessons. Thanks MIT.

[tawfeeqmuallem]

if course_grade == A:
print("this teacher is amazing")
elif course_grade in range (A, C+):
print("This teacher is really good!")
else:
if course_grade <= C+
print("I Hate coding")

[saimahossain]

you're brilliant Dr. Bell. love your lectures💜

[nitirajdaby]

What a smooth lecture ! Thank you ! You helped me understand Python. My professor did a terrible job teaching this. Thanks MIT !

[stevemilo]

This is the best MIT has to offer.
Good thing its free.