Behaviour of increment and decrement operators in Python
In Python, the increment operator (++) and decrement operator (--) do not exist. Instead, you can use the += and -= operators to increment or decrement a variable by a specific value. For example:
# increment a variable by 1
x = 5
x += 1
print(x) # Output: 6
# decrement a variable by 1
y = 10
y -= 1
print(y) # Output: 9
# increment a variable by any value
z = 20
z += 5
print(z) # Output: 25
# decrement a variable by any value
w = 50
w -= 10
print(w) # Output: 40
Note that these operators can be applied to any number variables, including floats and negative numbers.
Also python have x +=1 can be written as x=x+1 and x -=1 as x=x-1