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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 definition(self, suffix = "", local=False, ctype=None, optionals=True, customdim=None, modifiers=None):
 """Returns the fortran code string that would define this value element. :arg suffix: an optional suffix to append to the name of the variable. Useful for re-using definitions with new names. :arg local: when True, the parameter definition is re-cast as a local variable definition that has the "intent" and "optional" modifiers removed. :arg ctype: if a ctype should be used as the data type of the variable instead of the original type, specify that string here. :arg optionals: removes the "optional" modifier from the definition before generating it. :arg customdim: if the dimension string needs to be changed, specify the new one here. :arg modifiers: specify an additional list of modifiers to add to the variable definition. """

        kind = "({})".format(self.kind) if self.kind is not None else ""   
        cleanmods = [m for m in self.modifiers if m != "" and m != " "
                     and not (local and ("intent" in m or m == "optional"))
                     and not (not optionals and m == "optional")]
        if modifiers is not None:
            cleanmods.extend(modifiers)
        if len(cleanmods) > 0:
            mods = ", " + ", ".join(cleanmods) + " " 
        else:
            mods = " "
        if customdim is not None:
            dimension = "({})".format(customdim)
        else:
            dimension = "({})".format(self.dimension) if self.dimension is not None else ""

        if self.default is None:
            default = ""
        else:
            if ">" in self.default: #We have a pointer, don't add an extra space.
                default = " ={}".format(self.default) if self.default is not None else ""
            else:
                default = " = {}".format(self.default) if self.default is not None else ""
        name = "{}{}".format(self.name, suffix)
        stype = self.dtype if ctype is None else ctype
        return "{}{}{}:: {}{}{}".format(stype, kind, mods, name, dimension, default)