prepare_transferers and review_transfers.py

# Gets all necessary data from the user to make one or more transfers
def prepare_transferes():
    new_transfer = True
    prepared_transferes = []
    while new_transfer:
        get_recipient_address = True
        while get_recipient_address:
            recipient_address = raw_input("\nPlease enter the receiving address: ")

            if len(recipient_address) == 81:
                print("You enterd a address without checksum. Are you sure you want to continiue?")
                yes = yes_no_user_input()
                if yes:
                    get_recipient_address = False
                else:
                    print("Good choice! Addresses with checksum are a lot safer to use.")
            elif len(recipient_address) == 90:
                is_valid = is_valid_address(recipient_address)
                if is_valid:
                    get_recipient_address = False
                else:
                    print("Invalid address!! Please try again!")
            else:
                print("\nYou enterd a invalid address. Address must be 81 or 90 Char long!")

        recipient_address = bytes(recipient_address)
        user_message = raw_input("Please enter a message: ")
        user_tag = raw_input("Please enter a tag: ")
        user_tag = bytes(user_tag)
        transfer_value = transfer_value_user_input()
        txn = \
            ProposedTransaction(
                address=Address(
                    recipient_address
                ),

                message=TryteString.from_string(user_message),
                tag=Tag(user_tag),
                value=transfer_value,
            )
        prepared_transferes.append(txn)
        print("Do you want to prepare another transfer?")
        yes = yes_no_user_input()
        if not yes:
            new_transfer = False

    review_transfers(prepared_transferes)


# Before a transfer is actually sent, it will be displayed and can be canceled or confirmed by the user
def review_transfers(prepared_transferes):
    transfers_to_print = ""

    for txn in prepared_transferes:
        address = str(txn.address)
        value = str(convert_units(int(txn.value)))
        line = "------------------------------------------------" \
               "--------------------------------------------------------------\n"
        transfers_to_print += address + "  |  " + value + "\n" + line
    print("\n\n\nDestination:                                  "
          "                                              |  Value:\n"
          "-----------------------------------------------------"
          "---------------------------------------------------------")
    print(transfers_to_print)
    print("\n\nPlease review the transfer(s) carefully!\n")

    ask_user = True
    while ask_user:
        user_input = raw_input("\nEnter \"confirm\" to send the transfer(s)\n"
                               "Enter \"cancel\" to cancel the transfer(s)")
        user_input = user_input.upper()

        if user_input == "CONFIRM":
            print("\n\nOkay, sending transfer(s) now. This can take a while...")
            ask_user = False
            try:
                send_transfer(prepared_transferes)
            except:
                print("A error occurred :(")

        elif user_input == "CANCEL":
            print("\n\nTransfer(s) canceled!")
            ask_user = False

        else:
            print("Ups, I didn't understand that. Please try again!")