Learn Python Programming - 18 - Logical AND OR NOT

Exercises and Resources

Let's cover logical AND OR NOT ...
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[InFamousCzr]

That image is confusing maybe it's best explained like this.

"AND" = both have to be true to be true.

True and true = true
True and false = false
False and true = false
False and false = false

"OR" = just one has to be true to return true.

True or true = true
True or false = true
False or True = true
False or false = false

"NOT" = opposite of each other

Not true = false
Not false = true

In case someone watching this still doesn't get it.

[pnfitness]

You have a natural gift and ability to explain programming in ways that are so understandable! You made something I was confused on so simple. Thank you!

[williambuchanan]

Your an amazing teacher. Straight up. Pizza and poison, so simple yet so perfect.

[Zen-rwfz]

i was so confused about this last month and without even doing anything this sounds too simple

[KidsLearnHTML]

15:08 Thank you for clarifying the "what's necessary" stuff with real life. It's much appreciated.

[gore]

thank you SO much man! I was struggling so hard with the whole "not not false and true and false" junk. Your video summed it up perfectly for me. Mad respect my man!!

[the_professional]

Hi CP,
thank you for putting in the work!
I use "youtube lectures" like yours to expand my knowledge in certain areas next to my usual studies.
Very well done and easy to follow.
Keep it up!
Greetings from Germany :)

[JevvyMedia]

This video helped me a lot, especially with the real-life examples. Thank you so much.

[antonkorolev]

AMAZING!! Im taking free MIT Python courses - and you explain it perfectly ! Thank you

[derrickandchelseamcfall]

actually 'True or poision' worked because as soon as python evaluated True, the or statement evaluates to True. If you would have done poision or True you would have gotten a traceback error. It's called short-circuiting. If the first part of the or statement is True it doesn't even evaluate the second part because the statement is True by definition of 'or'.

[jaitelyg]

this was helpful and nice teacher
True

[Henki]

def password_1():

print('please enter username and password')
tries = 0
while True:
username = input()
password = input()
if username == 'henki' and password == 'pass':
print('access granted')
elif tries >= 2:
print('access denied')
break
if tries < 2:
tries = tries + 1

password_1()

[MR_MAGUIRE.]

14:12 It's False OR True, you said False AND True.

[juwu]

Like the way you are teaching! Savior of the day~

[saadmansakib]

this and or actually means bulean multiplication and addition where true is 1 and false is 0

[offzone]

Hey man! I wanted to say throughout these series this has worked out for me but some of the things like slicing strings and == <> <= >= != didn't work is it because you need terminal for those type of stuff . And also idk how to search for files like that, i found idle when i located the file of python. CAn you please help on how to get pip, terminal and stuff like that and also why soe of the things doesn't work?
Thank You
( I watched like 8+ episodes of these series in my first day)

[mohamedmukhtar]

import turtle

my_turtle = turtle.Turtle()
my_turtle.speed (0)
# Lesson learnt is that, I have called the Turtle fuction in the defined fuction and eachtime the system run it as part of the defined fuction.
def sqy(length, angle):

my_turtle.forward(length)
my_turtle.left(angle)
my_turtle.forward(length)
my_turtle.left(angle)
my_turtle.forward(length)
my_turtle.left(angle)
my_turtle.forward(length)
my_turtle.forward(length)

for i in range(101):
sqy(50, 90)
my_turtle.right(11)
#my_turtle = turtle.Turtle()
#my_turtle.forward(100)

[kurdobakur]

use_input = [('What', 'WP'), ('is', 'VBZ'), ('your', 'PRP$'), ('name', 'NN'), ('?', '.')]
x = ('What', 'WP')
y = ('name', 'NN')
z = ('age', 'NN')
z and y in use_input
>>> True

How could that be? and what can I do to make sure it returns false when one of the variables is not in the use_input?

[combatxhoop]

Your site just kinda put us in the video of How i Leaned to Code in less then 2 months and it doesnt really enroll us how to enroll

[preetamsaha]

its showing the name true and false are not defined.i cant do this this operations please help me .i m using in windows
this true and false are appearing in black color but in u r video its in orange