Instance Usage of the python not Operator

Description

1. not logic is NO, which can perform NO operation on the value to the right of symbol.

2. For Boolean values, the non-operation will reverse them, and True will change to False, and False will change to True.

For non-Boolean values, the non-operation converts them to Boolean values first, and then reverses them.

The nullity value is False, and the others are True.

Instances

a = True
#  If the expression does not assign a value. Will not check the variable a Have any impact, 
#  Just created 1 A new object stores the results, 
#  Same as data type conversion 
not a
#  Pair variable a After assignment, the expression is the result that affects the variable a . 
a = not a
print(f"a = {a}") # a = False
 
 
 
# 4 Logical operator plus the expression around () Does not affect the result of the operation. 
#  Why add (), Avoid ambiguity and increase readability. 
a = 1
b = 2
c = 3
print((a < b) and (b < c))  # True
print((a > b) and (b < c))  # False
print((a > b) or (b < c))   # True
print(not (a > b))          # True

Instance extension:

# Defining variables num Value is a string 123num = "123"# Defining variables num2 For int  Value  1
num2 = 1#while  The loop condition is, if the variable num  Include string 2 Is looped and printed hehe
while "2" in num:
    print("hehe")# Every cycle, num2 Will increase by itself 1
    num2 += 1# When num   Value is equal to 2  Stop this time while  Cycle (break  To interrupt this cycle )
    if num2 == 3:
        break# Last print over Value 
print("over")# Explanation: