Python if statement violates condition [on hold]

I have a Python 3 script that monitors a GPIO PIN on a Raspberry Pi.

The pin's value is returning 1 as expected using the following methodology:

io.setMode(io.BOARD)
b_pin = 40
b_status = 0
pin_value = int(io.input(b_pin))
print('pin_value['+str(pin_value)+']')

which prints to the console:

pin_value[1] 

However, testing this in an if statement violates the elif condition:

if(pin_value == 1):
    if(b_status != 0):
        print('status open ['+str(pin_value)+'] ['+str(b_status)+']')
        b_status = 0
elif(pin_value == 0):
    if(b_status != 1):
        print('status closed ['+str(pin_value)+'] ['+str(b_status)+']')
        b_status = 1

which prints the resulting into IDLE console:

status closed [1] [0]

which violates the condition

elif(pin_value == 0):

What am I not understanding about Python if statements?