This should be enough code to get you started. You just need a flag to determine whether a number should be hidden or not:
grid = [
[{"number": 1, "hidden": True}, {"number": 5, "hidden": False}, {"number": 8, "hidden": True}],
[{"number": 3, "hidden": True}, {"number": 2, "hidden": True}, {"number": 4, "hidden": False}],
[{"number": 9, "hidden": True}, {"number": 7, "hidden": False}, {"number": 3, "hidden": False}]
]
for row in grid:
for column in row:
print("*" if column["hidden"] else column["number"], "", end="")
print()
Prints:
* 5 *
* * 4
* 7 3
solved How to hide a value in Python? (display it as a *) [closed]