If the player doesnt win money from all slot machines, the system will increase the players luck in the next turn according to the following rule:

luck = (

0.001 * loss in machine 1 +

0.002 * loss in machine 2 +

min(0.005 * abs(500 - loss in machine 3), 0.003 * loss in machine 3)

- 2

)

Here the total loss is always considered positive: If a slot machine gives you -100 profit, then you lost 100.

If the player gains money from any of the slot machine, luck is set to -2

Write a function that can warn your friend about his luck in the next turn. It takes the dictionary from the last question as the input and updates the dictionary with a new key/value pair, {'luck': X} (X is 'Lucky' if luck is positive, 'Try again' if luck is 0, and 'Unlucky' if luck is negative).

Input	Output	Explanation
{ '1': -2064, '2':-627, '3': -652 }	{ '1': -2064, '2':-627, '3':-652, 'luck': 'Lucky' }	Using the formula for luck: 0.001 * 2064 + 0.002 * 627 + min(0.005 * 152, 0.003 * 652) - 2 = 2.078
{ '1': -865, '2':-342, '3': 5 }	{ '1': -865, '2':-342, '3': 5, 'luck': 'Unlucky' }	Notice, that the third slot machine allowed your friend to win money, so according to the second rule luck is set to -2

doctests:

def luck_test(records): """ >>> case1 = {'1': -865, '2':-342, '3': 5} >>> luck_test(case1) {'1': -865, '2': -342, '3': 5, 'luck': 'Unlucky'} >>> case2 = {'1': -2064, '2': -627, '3': -652} >>> luck_test(case2) {'1': -2064, '2': -627, '3': -652, 'luck': 'Lucky'} >>> case3 = {'1': -463, '2': -389, '3': -307} >>> luck_test(case3) {'1': -463, '2': -389, '3': -307, 'luck': ' Lucky'} """