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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 get_widget_title(tab_label_text):
 """Transform Notebook tab label to title by replacing underscores with white spaces and capitalizing the first letter of each word. :param tab_label_text: The string of the tab label to be transformed :return: The transformed title as a string """

    title = ''
    title_list = tab_label_text.split('_')
    for word in title_list:
        title += word.upper() + ' '
    title.strip()
    return title