def submit_operations(account_seed, operations, transaction_memo):
"""
This method signs the given operations and submits them to the Stellar network
:param str account_seed: Seed of the account submitting the operations. It is required to sign the transactions.
:param Operation operations: Operations to be submitted.
:param str transaction_memo: Text memo to be included in Stellar transaction. Maximum size of 28 bytes.
:return: Returns a string containing the server response or None if the transaction could not be submitted.
:rtype: str or None
"""
try:
builder = Builder(secret=account_seed)
except Exception:
# Too broad exception because no specific exception is being thrown by the stellar_base package.
# TODO: This should be fixed in future versions
print("An error occurred (Please check your Internet connection)")
return None
builder.add_text_memo(transaction_memo)
for operation in operations:
builder.append_op(operation)
builder.sign()
try:
return builder.submit()
except Exception:
# Too broad exception because no specific exception is being thrown by the stellar_base package.
# TODO: This should be fixed in future versions
print("An error occurred (Please check your Internet connection)")
return None
def tx(self, account, asset):
builder = Builder(address=account['account_id'])
builder.append_op(ChangeTrust(opts={'asset': asset}))
return builder.gen_te()
