predicates.py

# Here's a regular example of a predicate using numbers:
def my_predicate(item):
    return item > 5

items = [5, 10, 6, 7, 7, -2]
for filtered in filter(my_predicate, items):
    print(filtered)

# Output: 10, 6, 7, 7

###

# My thinking: the item export predicate looks like this
def item_export_predicate(item):
    name = get_item_name(item)
    matches_regex = regex_match('.+? Ore', name)
    return matches_regex

# The all_items is basically provided by the item export block, you only have to provide
# the item_export_predicate function which tells the block "yes I want this item"/"no I don't want this item"
# whenever the blocks asks the predicate. all_items could look like this:
# [Diamond Ore, Diamond Ore, Redstone Block, ...]
for filtered in item_export(item_export_predicate, all_items):
    print(filtered)

# Output: All blocks ending in "Ore"