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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 copy_default_data_file(filename, module=None):
 """Copies file from default data directory to local directory."""

    if module is None:
        module = __get_filetypes_module()
    fullpath = get_default_data_path(filename, module=module)
    shutil.copy(fullpath, ".")