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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 pyxlines(self):
 """Cython code lines. Assumptions: * Function shall be a method * Method shall be inlined * Method returns nothing * Method arguments are of type `int` (except self) * Local variables are generally of type `int` but of type `double` when their name starts with `d_` """

        lines = ['    '+line for line in self.cleanlines]
        lines[0] = lines[0].replace('def ', 'cpdef inline void ')
        lines[0] = lines[0].replace('):', ') %s:' % _nogil)
        for name in self.untypedarguments:
            lines[0] = lines[0].replace(', %s ' % name, ', int %s ' % name)
            lines[0] = lines[0].replace(', %s)' % name, ', int %s)' % name)
        for name in self.untypedinternalvarnames:
            if name.startswith('d_'):
                lines.insert(1, '        cdef double ' + name)
            else:
                lines.insert(1, '        cdef int ' + name)
        return Lines(*lines)