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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_version():
 """ Extract the version number from the code. """

    here = os.path.abspath(os.path.dirname(__file__))
    jbxapi_file = os.path.join(here, "jbxapi.py")

    with open(jbxapi_file) as f:
        content = f.read()
        match = re.search(r"^__version__ = ['\"]([^'\"]*)['\"]", content, re.M)

    if not match:
        raise RuntimeError("Unable to find version string.")
    return match.group(1)