Update app.py

app.py

@@ -285,7 +285,8 @@ def mychain_mine_block_send(balance, chain_r=None,chain_n=None):
                 'timestamp': block['timestamp'],
                 'balance': block['balance'],
                 'proof': block['proof'],
-                'previous_hash': block['previous_hash']}
+                'previous_hash': block['previous_hash']
+               }
     message = "A block is MINED"
     show_chain = display_chain_send()
     if len(mychain_send.chain) > 1000:
@@ -307,7 +308,8 @@ def mychain_mine_block_rec(balance, chain_r=None,chain_n=None):
                 'timestamp': block['timestamp'],
                 'balance': block['balance'],
                 'proof': block['proof'],
-                'previous_hash': block['previous_hash']}
+                'previous_hash': block['previous_hash']
+               }
     message = "A block is MINED"
     show_chain = display_chain_rec()
     if len(mychain_rec.chain) > 1000: