Hack A Lapp/Introduction to Bitcoins Lightning Network App Development/C-Lightning with python/Ask your customer to pay with bitcoins lightning network by creating a lightning invoice/quiz

1

What is the correct syntax to create an invoice in python?

	rpc_interface.invoice()
	rpc_interface.create_invoice()
	rpc_interface.invoice(2000, "label", "description")
	rpc_interface.create_invoice(2000, "label", "description")

2

looking at the pylightning api client we find the declaration of the invoice function: def invoice(self, msatoshi, label, description, expiry=None, fallbacks=None, preimage=None ): What does that tell us?

	The invoice needs to have 6 arguments
	The invoice can have up to 6 arguments
	The invoice must have at least 3 arguments

3

If you don't provide the expire argument, how long will the invoice be valid?

	Forever, since it does not expire
	144 Block times
	1 Hour

4

you have successfully invoked the .invoice() RPC-function and stored the object to the variable called invoice. How do you print the bolt11 string?

	print(invoice["bolt11"])
	print(invoice)
	invoice.get_bolt11()
	< code> invoice.bolt11()

5

initiating the rpc interface with rpc_interface = LightningRpc() we need to pass a string as an argument. Which value should the string be given?

	the local path to the lightning-rpc file
	public key of your lightning node followed by its IP address and port
	some unique identifier for your pythong programm to be able to access the interface