#  created : 20250125

#  https://www.scientecheasy.com/2022/10/operator-precedence-in-python.html/

# Python Precedence Operator

# #  meaning of precedence operator:
# ------------------------------------
# Operator precedence in Python means the order in which the Python interpreter executes operators. 
# It tells the Python interpreter which operator should be evaluated first if a single statement contains more than one operator.

def exp():
    result = exp = 3 + 5 * 4 # --> 5*4 will work first anad then will add 3
    return result

exp()

23

# incorrect format of precedence 

Avg = 5 + 10 + 20 / 3

Avg

21.666666666666668

# difference 

Avg = (5 + 10 + 20) / 3

Avg

11.666666666666666

def division():
    result=(10 / 5 * 5)
    return result

division()

10.0

def division2():
    result = (10 - 10 + 10 / 10 * 10)
    return result

division()

10.0

def division3():
    result=(((6 - 3) + 2 * 4) * 8 / 4)
    return result

division3()

22.0

# this is how the division3 fun will work :

# (6 – 3) = 3
# 2 * 4 = 8
# 3 + 8 = 11
# 8 /4 = 2
# 11 * 2 = 22.0

def division4():
    p = 1
    q = 2
    if(p > 0 and q > 0):
        return ('p and q are positive integer numbers.')

division4()

'p and q are positive integer numbers.'

# Associativity in Python

# Associativity in Python is the order in which the Python interpreter 
# evaluates the expression that contains more than one operator of the same precedence.

def division5():
    result1 = 10 * 20 / 10
    result2 = 20 / 10 * 10
    print(result1)
    print(result2)

division5()

20.0
20.0

def division6():
    result1 = (2 ** 2 ** 3) #-->  it first evaluates (2 ** 3) op 8 and then  2 ** 8 op 256
    result2 = (2 ** 2) ** 3 #-->  it first evaluates (2 ** 2) op 4 and then 4 ** 3 op 64
    print(result1)
    print(result2)

division6()

256
64