# Logic Gates In Python

This Python tutorial is about **Logic Gates in Python**. We will try to learn each of the logic gates in Python with some easy examples.

## Logic Gates in Python

All of us are familiar with the use of logic gates in the processing of electrical signals and are widely used in the electrical and electronics industry. Using the diodes and transistors these gates can be designed by proper alignment of these electronic devices. In this tutorial we will learn about the implementation of some basic gates ‘**and**‘, ‘**or**‘ ,’**not**‘ , ‘**nand**‘ ,’**nor**‘, ‘**xnor**‘, ‘**xor**‘ in Python 3.x or earlier.

These gates can be implemented by using functions designed in accordance with that of the truth table associated with the respective gate.

### Construction of And Gate in Python

**Here is the code to create AND gate in Python**

def AND (a, b): if a == 1 and b == 1: return True else: return False # main function if __name__=='__main__': print(AND(0,0)) print(AND(1,0)) print(AND(0,1)) print(AND(1,1))

OUTPUT: False False False True

### Construction of Or Gate in Python

**Here is the code to create OR gate in Python**

def OR(a, b): if a == 1: return True elif b == 1: return True else: return False # main function if __name__=='__main__': print(OR(0,0)) print(OR(1,0)) print(OR(0,1)) print(OR(1,1))

OUTPUT: False True True True

### Construction of Not Gate in Python

**Code to create NOT gate in Python**

def NOT(a): if(a == 0): return 1 elif(a == 1): return 0 # main function if __name__=='__main__': print(OR(0)) print(OR(1))

OUTPUT: True False

### Construction of Nand Gate in Python (negated and)

**Code to create NAND gate in Python**

def NAND (a, b): if a == 1 and b == 1: return False else: return True # main function if __name__=='__main__': print(NAND(0,0)) print(NAND(1,0)) print(NAND(0,1)) print(NAND(1,1))

OUTPUT: True True True False

### Construction of Nor Gate in Python (negated or)

**Code to create NOR gate in Python**

def NOR(a, b): if(a == 0) and (b == 0): return True elif(a == 0) and (b == 1): return False elif(a == 1) and (b == 0): return False elif(a == 1) and (b == 1): return False # main function if __name__=='__main__': print(NOR(0,0)) print(NOR(1,0)) print(NOR(0,1)) print(NOR(1,1))

OUTPUT: True False False False

### Construction of Xor Gate in Python (exclusive or)

**Code to create XOR gate in Python**

def XOR (a, b): if a != b: return True else: return False # main function if __name__=='__main__': print(XOR(0,0)) print(XOR(1,0)) print(XOR(0,1)) print(XOR(1,1))

OUTPUT: False True True False

### Construction of Xnor Gate in Python (negated exclusive or)

**Code to construct XNOR gate in Python**

def XNOR(a,b): if(a == b): return True else: return False # main function if __name__=='__main__': print(XNOR(0,0)) print(XNOR(1,0)) print(XNOR(0,1)) print(XNOR(1,1))

OUTPUT: True False False True

In all these types of gates, a function is defined in accordance with the Truth table of the respective gate returning back the output in the form of Boolean values (True, False).

This driving function is called for various types of inputs and the corresponding output is produced. This is the reason these are used in the construction of switches and circuit models.

Also, learn,

The conceptual understanding of operators in python

Some important basic built functions in python

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