TypeError: '>' not supported between instances of 'function' and 'int'
Your ticket variable gets overwritten by your function variable, ticket. Which makes you get an error meaning you can't compare oranges(functions) to apples(integers). Rename either one and it should work fine.
Either replace:
global ticketticket = decimal.Decimal(random.randrange(0, 100))with:
global anything_but_ticketanything_but_ticket = decimal.Decimal(random.randrange(0, 100))or:
def ticket():with:
def anything_but_ticket():