[Python] Does every transaction create a new block in blockchain?

class Block:
def __init__(self, index, transactions, previous_hash):
self.index = index
self.transactions = transactions
self.previous_hash = previous_hash
self.timestamp = time()

class BlockChain:
self.chain = []

def new_block(self, transactions):
pass


lets say I make new a transaction {'sender': 'bob', 'receiver': 'alice', 'amount': 2}

will this transaction create a new block in the chain (i.e. self.chain.append(new_block_which_has_above_transaction)

or will it get last block in the chain (i.e. len(self.chain)-1) and modify the self.transactions of this block.

https://hackernoon.com/learn-blockchains-by-building-one-117428612f46 In this article, author is using self.transactions as a list and thats where I'm getting confused.

As per my understanding, every new transaction will create a new block with that transaction and that block will be appended to blockchain. if some one mine a new block, few coins will be awarded to miner as a transaction. is that correct flow? or can a block has multiple transactions? if yes

1. 
   should a genesis block has multiple transactions?
   
   
2. 
   what if two nodes have different chain(I mean we need to resolve using consensus algorithm) but meanwhile if that node process a transaction then hash of that block would be changed and then what would happen to neighbour node's chain?
   

Continue reading...