Function confirm_merge

example_code/item_077.py:153–170

(input_paths, output_path)

print("Example 5")
def confirm_merge(input_paths, output_path):
    found = collections.defaultdict(list)
    with open(output_path, "rb") as f:
        for line in f:
            for path in input_paths:
                if line.find(path.encode()) == 0:
                    found[path].append(line)

    expected = collections.defaultdict(list)
    for path in input_paths:
        with open(path, "rb") as f:
            expected[path].extend(f.readlines())

    for key, expected_lines in expected.items():
        found_lines = found[key]
        assert (
            expected_lines == found_lines
        ), f"{expected_lines!r} == {found_lines!r}"

input_paths = ...
handles = ...