below is the stack trace for the error am facing when am trying to run the Read.py script..

Traceback (most recent call last):
File "Read.py", line 41, in
MIFAREReader = MFRC522.MFRC522()
File "/home/pi/MFRC522-python/MFRC522.py", line 135, in init
self.MFRC522_Init()
File "/home/pi/MFRC522-python/MFRC522.py", line 406, in MFRC522_Init
self.MFRC522_Reset();
File "/home/pi/MFRC522-python/MFRC522.py", line 138, in MFRC522_Reset
self.Write_MFRC522(self.CommandReg, self.PCD_RESETPHASE)
File "/home/pi/MFRC522-python/MFRC522.py", line 141, in Write_MFRC522
spi.transfer(((addr<<1)&0x7E,val))
TypeError: function takes exactly 2 arguments (1 given)