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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 load_abbr(abbr_file=ABBREVIATION_FILE):
 """ Load the abbr2long from file """

    abbr2long = dict()
    with open(abbr_file) as f:
        lines = f.read().split('\n')
        for line in lines:
            m = re.match(r'(\w+)\t(.+)', line)
            if m:
                abbr2long[m.group(1)] = m.group(2)
    return abbr2long