weeklyConversions = {
    "Mon": "Monday",
    "Tu": "Tuesday",
    "wed": "Wednesday",
    "Thur": "Thursday",
    "Fri": "Friday",
    0:"Can get Number as Key value"
} 
print(weeklyConversions["Tu"])
print(weeklyConversions.get("Mon"))
print(weeklyConversions.get(0))