Source code for gpm.utils.list

# -----------------------------------------------------------------------------.
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# Copyright (c) 2024 GPM-API developers
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# This file is part of GPM-API.

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# -----------------------------------------------------------------------------.
"""This module contains functions for list processing."""




def flatten_list(nested_list):
    """Flatten a nested list into a single-level list."""
    if isinstance(nested_list, list) and len(nested_list) == 0:
        return nested_list
    # If list is already flat, return as is to avoid flattening to chars
    if isinstance(nested_list, list) and not isinstance(nested_list[0], list):
        return nested_list
    return [item for sublist in nested_list for item in sublist] if isinstance(nested_list, list) else [nested_list]