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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 pipinstall(packages):
 """ Install one or more pip packages. :type packages: string or list :param packages: The package or list of packages to install. :raises TypeError: Nor a string or a list was provided. """


    if isinstance(packages, str):
        if hasattr(pip, 'main'):
            pip.main(['install', packages])
        else:
            pip._internal.main(['install', packages])
    elif isinstance(packages, list):
        for i in enumerate(packages):
            if hasattr(pip, 'main'):
                pip.main(['install', i[1]])
            else:
                pip._internal.main(['install', i[1]])
    else:
        raise TypeError("Nor a string or a list was provided.")