Blockchain - Writing simulation code run the simulation

[@TutorialsPoint_]

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[@aristidengaboyindekwe1554]

This tutorial is very interesting! I want to ask some question Where the BC is saved?

[@msadekmarwa5934]

@Arnab Sen How can I show the transaction has been recorded ?

[@manojkumarts1153]

is there any wrong in while loop...its showing error

[@msadekmarwa5934]

the code please?

[@huzaifaabedeen7119]

import hashlib
class Block:
def __init__(self, no, nonce, data, hashcode, prev):
self.no=no
self.nonce=nonce
self.data=data
self.hashcode=hash
self.prev=prev
def getStringVal():
return self.no, self.nonce, self.data, self.hashcode, self.prev
class Blockchain:
def __init__(self):
self.chain=[]
self.prefix="0000"
def addNewBlock(self, data):
no=len(self.chain)
nonce=0
if len(self.chain)==0:
prev="0"
else:
prev=self.chain[-1].hashcode
myHash hashlib.sha256(str(data).encode('utf-8')).hexdigest()
block=Block(no, nonce, data, myHash, prev)
self.chain.append(block)
def printBlockchain(self):
chainDict={}
for no in range(len(self.chain)):
chainDict[no]=self.chain[no].getStringVal()
print(chainDict)
def mineChain(self):
brokenLink=self.checkIfBroken
if (brokenLink==None):
pass
else:
for block in self.chain[brokenLink.no:]:
print("Mining Block:" block.getStringVal())
self.mineBlock(block)
def mineBlock(self, block):
nonce=0
myHash=hashlib.sha256(str(nonce)+str(block.data)).encode('utf-8').hexdigest()
while myHash[0:4]!=self.prefix:
myHash=hashlib.sha256(str(nonce)+str(block.data)).encode('utf-8').hexdigest()
nonce=nonce+1
else:
self.chain[block.no].hashcode=myHash
self.chain[block.no].nonce=nonce
if (block.no

[@msadekmarwa5934]

it displays: ModuleNotFoundError: No module named 'blockchain' !!!