If coding tutorials with math examples are the bane of your existence, keep reading. This series uses relatable examples like dogs and cats.
Boolean & Operators
- Boolean
- Operators
- Arithmetic
- Comparison
- Logical
Boolean
True or False are the only possibilities with a boolean. However, you can use them for yes/no questions and many other things too.
is_dog = False
is_coding = True
is_programmer = True
is_cat = False
is_human = true # this is true, but will error because it isn't capitalized
True and False are constants with the values 1 & 0
True == 1
False == 0
Operators
Operators are the constructs which can manipulate the value of operands. -reference
+ - * / % // ** # math or arithmetic operators
== != < > <> >= <= # comparison operators
and or not # logical operators
Arithmetic Operators
I gave a bunch of examples in the post below.
Comparison Operators
you can compare numbers, words, lists, and more
| Operator | What it is | Example |
|---|---|---|
| == | equals | 2 == 2 |
| != | does not equal | 2 != 7 |
| > | greater than | 9 > 2 |
| >= | greater than or equal to |
9 >= 9 or 9 >= 7
|
| < | less than | 4 < 6 |
| <= | less than or equal to | 4 <= 7 |
Logical Operators
and or not are useful for making decisions
dog_needs_exercise = True
is_awake = True
if dog_needs_exercise and is_awake:
print("Take dog for a walk")
dog_hungry = False
is_dinner_time = True
if dog_hungry or is_dinner_time:
print("Feed dog")
# getting paid this week?
a = "go to work"
b = "get work done"
if a and b:
print("You get paid") # because you did both
if a or b:
print("You won't get paid") # because you didn't do both
Series based on
Top comments (4)
As mentioned before, True/False is actually 1/0. So, are you saying we should be using
and&orto evaluate to 1/0?I’ve tried to find examples that don’t lead to a Boolean outcome and I’m at a loss.
I read the python docs this morning and it refers to these as Boolean operators.
Thanks for letting me know.
I've added a note about the values.
I know
and&ordon't directly evaluate toTrue&False. I was trying to simplify the example, but I think I oversimplified it. I'll come up with something that doesn't come across that way. I wanted to make sure if a beginner comes across the post that it's not using anything too advanced.So, part of my problem understanding your original post was that I had never seen
assertbefore. I've read up on it and now I think I can make sense of this.If I'm now understanding correctly,
and&orstatements seem similar toif,else, andelifstatements.I'm thinking something like this is a simple enough example.
I definitely don’t want it to be incorrect. The only example I keep thinking of is a while loop, but that’s a bit more advanced than the current notes.