Update app.py

app.py

@@ -237,7 +237,7 @@ def mine_block(chain_r=None,chain_n=None):
                 'previous_hash': block['previous_hash']}
     message = "A block is MINED"
     show_chain = display_chain()
-    if len(blockchain.chain) > 20:
+    if len(blockchain.chain) > 1000:
         blockchain.reset()
         response = None
         show_chain=display_chain()
@@ -466,7 +466,8 @@ def issue_tokens(send,rec,amount):
             p = False
             
     return mes,p
-    
+#api = HfApi(token=token)
+f_ist = (api.list_repo_files(repo_id=f'{repo}/{name}', repo_type="space"))
 with gr.Blocks() as bc:
     with gr.Row(visible=True) as invalid:
         pass_box = gr.Textbox()
@@ -485,6 +486,7 @@ with gr.Blocks() as bc:
                         in_chain_btn=gr.Button("Load Chain")
                         create_bc = gr.Button("Create New Blockchain")
                 send=gr.Textbox(label="Sender")
+                send = gr.Dropdown(label="Sender", choices=[f for f in f_ist], value = "Bank")
                 rec=gr.Textbox(label="Recipient")
                 am=gr.Textbox(label="Amount")
                 send_trans=gr.Button("Post Transaction")