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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 _construct_user_dictionary(global_options, tool_options):
 """Cause dictionary with valid and user words to be cached on disk."""

    del global_options

    spellchecker_cache_path = tool_options.get("spellcheck_cache", None)
    valid_words_dictionary_helper.create(spellchecker_cache_path)