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Man Than

The document outlines a simple blockchain voting system implemented in Python. It defines a Block class to create individual blocks containing voter information and a Blockchain class to manage the chain of blocks. The system allows users to input their name and select a candidate to record their vote, which is then stored in the blockchain.

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anshbatham75
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11 views2 pages

Man Than

The document outlines a simple blockchain voting system implemented in Python. It defines a Block class to create individual blocks containing voter information and a Blockchain class to manage the chain of blocks. The system allows users to input their name and select a candidate to record their vote, which is then stored in the blockchain.

Uploaded by

anshbatham75
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as TXT, PDF, TXT or read online on Scribd
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import hashlib

import datetime as dt

class Block:
def __init__(self, index, timestamp, voter, candidate, previous_hash):
self.index = index
self.timestamp = timestamp
self.voter = voter
self.candidate = candidate
self.previous_hash = previous_hash
self.hash = self.calculate_hash()

def calculate_hash(self):
sha = hashlib.sha256()
sha.update(str(self.index).encode('utf-8') +
str(self.timestamp).encode('utf-8') +
self.voter.encode('utf-8') +
self.candidate.encode('utf-8') +
self.previous_hash.encode('utf-8'))
return sha.hexdigest()

class Blockchain:
def __init__(self):
self.chain = [self.create_genesis_block()]

def create_genesis_block(self):
return Block(0, dt.datetime.now(), "Genesis Voter", "Genesis Candidate",
"0")

def add_block(self, voter, candidate):


previous_block = self.chain[-1]
new_block = Block(len(self.chain), dt.datetime.now(), voter, candidate,
previous_block.hash)
self.chain.append(new_block)

def print_chain(self):
for block in self.chain:
print("Index:", block.index)
print("Timestamp:", block.timestamp)
print("Voter:", block.voter)
print("Candidate:", block.candidate)
print("Previous Hash:", block.previous_hash)
print("Hash:", block.hash)
print()

if __name__ == "__main__":
blockchain = Blockchain()

print("Welcome to the Blockchain Voting System!")


print("Candidates: BJP, Congress, Manthan, Ram, Aam Aadmi Party")

while True:
voter_name = input("Enter voter name (or 'exit' to finish): ")
if voter_name.lower() == 'exit':
break

print("Choose a candidate:")
print("1. BJP")
print("2. Congress")
print("3. Manthan")
print("4. Ram")
print("5. Aam Aadmi Party")
candidate_choice = input("Enter your choice (1-5): ")

candidates = ["BJP", "Congress", "Manthan", "Ram", "Aam Aadmi Party"]


if candidate_choice.isdigit() and 1 <= int(candidate_choice) <= 5:
candidate_name = candidates[int(candidate_choice) - 1]
blockchain.add_block(voter_name, candidate_name)
print("Vote recorded!\n")
else:
print("Invalid choice! Please choose again.\n")

print("\nVoting has concluded. Here is the blockchain:")


blockchain.print_chain()

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