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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 shell2json(s):
 """Convert shell syntax to json."""

    replace = {
        r'BinData\(.+?\)': '1',
        r'(new )?Date\(.+?\)': '1',
        r'Timestamp\(.+?\)': '1',
        r'ObjectId\(.+?\)': '1',
        r'DBRef\(.+?\)': '1',
        r'undefined': '1',
        r'MinKey': '1',
        r'MaxKey': '1',
        r'NumberLong\(.+?\)': '1',
        r'/.+?/\w*': '1'
    }

    for key, value in replace.items():
        s = re.sub(key, value, s)

    return s