def snapshot_diff()

in memory_analyzer/analysis_utils.py [0:0]

• 26 lines of code
• 6 McCabe index (conditional complexity)

def snapshot_diff(cur_items, snapshot_file):
    """
    Attempts to compare like PIDs. If like PIDS can't be found it will just compare
    the first PID listed to the first PID in the file. Any unmatched or non-first
    PIDs will be ignored because we don't know what to compare them to.
    """
    try:
        prev_items = list(frontend_utils.get_pages(snapshot_file))
    except pickle.UnpicklingError as e:
        frontend_utils.echo_error(
            f"Error unpickling the data from {snapshot_file}: {e}"
        )
        return None

    differences = []
    for cur_item in cur_items:
        for prev_item in prev_items:
            if cur_item.pid == prev_item.pid:
                diff = summary.get_diff(cur_item.data, prev_item.data)
                differences.append(
                    RetrievedObjects(
                        pid=cur_item.pid,
                        title=f"Snapshot Differences for {cur_item.pid}",
                        data=diff,
                    )
                )
    if not differences:
        diff = summary.get_diff(cur_items[0].data, prev_items[0].data)
        differences.append(
            RetrievedObjects(pid=0, title=f"Snapshot Differences", data=diff)
        )
    return differences