allowance = exchange.get_allowance("0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48")
print(type(allowance))
time.sleep(1)
if allowance["allowance"] == "0":
appr_tx = exchange.get_approve("0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48")
time.sleep(1)
built = helper.build_tx(appr_tx, speed="low")
time.sleep(1)
signed = helper.sign_tx(built)
time.sleep(1)
approval_result = helper.broadcast_tx(signed)
time.sleep(1)
print(approval_result)