When to decide to set up a variable to True or False?

Question

I'm trying to figure out why some variables are set up directly with a false booleans value.
Does anyone have some concrete example to provide and explain the reason for those actions in a real situation? Thanks in advance

Answer 1

Hi Alexandre NAROLLES / Solutionist Thinker
Many things in the world can be categorized i either black or white, on or off, true or false etc.
In programming tests are classical examples. For example if you want to test if a number is even or odd, or if a year is a leap year not, or if a list is empty or not. In these cases the return value from a test function can be a boolean value 0 or 1, or False or True.
To use boolean values in programming are therefore very common.

Answer 2

Concrete example:
It is a Boolean value, whether you have Pro subscription or not.
It controls your access to certain content, and controls if advertisements are shown to you or not.

Answer 3

Alexandre NAROLLES / Solutionist Thinker ,

here is code that demonstrates the use of boolean flags when checking the requirements of a password:
2 digits minimum
2 special characters minimum
7 characters length as minimum

inp = input()
state_lst = [False,False,False] # list is preset with False for all conditions

if len([x for x in inp if x.isdigit()]) >= 2: # check for digits
state_lst[0] = True

if len([x for x in inp if x in '!@#$%&*']) >= 2: # check for special characters
state_lst[1] = True

if len(inp) >= 7: # check for total length
state_lst[2] = True

print('Strong') if all(state_lst) else print('Weak') # if all items in the list are True, it prints "Strong", otherwise it prints "Weak"