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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def update(dct, dct_merge):
 """Recursively merge dicts."""

    for key, value in dct_merge.items():
        if key in dct and isinstance(dct[key], dict):
            dct[key] = update(dct[key], value)
        else:
            dct[key] = value
    return dct