Lecture 3: Iteration

MIT 6.100L Introduction to CS and Programming using Python, Fall 2022
Instructor: Ana Bell

An introduction to control flow and iteration through loops. Looping mechanisms include while and for loops. Lots of syntax today, be sure to get lots of practice! While loops loop as long as a condition is true and you need to make sure you don’t enter an infinite loop. For loops can loop over ranges of numbers and elements of a string.

License: Creative Commons BY-NC-SA

[NinjaScorpio]

Its so hard to find a good teacher. Thank you MiT for uploading this video online for free.

[fatbagz]

First video has 250k views, this has 15k. Keep grinding boys

[brucefrizzell]

I prefer the new format .
Greetings from Lampasas Texas .

[tmo]

Chapters:
00:00 - Intro
04:45 - Zelda
07:49 - While Loops
30:40 - For Loops
45:52 - Summary

[danielspinks]

On the "AT HOME" Practice 1 section:
The answer is:
x = 15
for i in range(1, x+1):
if i%5 == 0:
print(i)

What is the == 0 do? I get the i%5 is Divide i by 5.

[zaairvasquez]

Now you can't get out... if you go right or Right...

where = input("You're in the Lost Forest. Go Left or Right? ")
while where == "Right" or "right":
where = input("You're in the Lost Forest. Go Left or Right? ")
print("You got out of the Lost Forest!")

[zaairvasquez]

mysum = 5
start = 3
end = 5
for i in range(start, end):
mysum += i
print(mysum)

You still get 12

[zaairvasquez]

For this YOU TRY IT (For this code to use variables start and end in the range, to get the
total sum between and including those values.
For example, if start=3 and end=5 the the sum should be 12) why not just change mysum = 0 to mysum = 5?

[Zakariah]

Please ad the Dr. in front of your name. Makes a huge difference.

[Paradoxonium]

The fingertip exercise's solution code of this lecture is not entirely correct. N has to be cast as a variable first as per the question.

[alexiscamio]

Hello, thanks, How are you? From France, great Thanks. Do you Know the benefts of doing sports?