FOR loop logic question

Python
1

why
why553×582 75 KB

Hi :slight_smile:

Gee, I could no longer log into the forum. Had to re-register…

I have resumed the Python beginner’s course and while playing around, I din’t quite get why the code above does not print Moron between 2 and Fool. Can anyone explain?

2

Seems like number == True only for 1. But this…

if bool(number) == True:

…should behave like you expect it to.

3

Hm, strange. He says in the videos that only the number 0, an empty “”, and the object None are False in Python, everything else is True.
So, I don’t see the difference between the numbers 0, 1, 2 or 285. The program understood me correctly in the case of 0 and 1…

4

The == operator compares the value of two objects. The Boolean True behaves like the value 1, and the Boolean False behaves like the value 0 . So 2 == True is like saying 2 == 1. The output of this code…

print(0 == False) # 0 == 0
print(1 == True) # 1 == 1
print(2 == True) # 2 == 1
print(2 == False) # 2 == 0

is

True
True
False
False

You should use the bool() function to get the Boolean value (True or False) of an object. The output of this code…

print(bool(0) == False)
print(bool(1) == True)
print(bool(2) == True)

is

True
True
True
5

Oh I see. So, Python did not think of my numbers as any old numbers, but as the foundation of digital, 0 and 1? Category mismatch…

6

Let your code simply read as follows:

for number in range(3):
print(number)
if number:
print(“Moron”)
print(“Fool”)
else:
print(“Bye”)

Do not introduce the bool ‘True’ in the nested ‘if’ an you will get the result you want.

You can try this out.