<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _Function(self, t):
 """ Handle function definitions """

        if t.decorators is not None:
            self._fill("@")
            self._dispatch(t.decorators)
        self._fill("def "+t.name + "(")
        defaults = [None] * (len(t.argnames) - len(t.defaults)) + list(t.defaults)
        for i, arg in enumerate(zip(t.argnames, defaults)):
            self._write(arg[0])
            if arg[1] is not None:
                self._write('=')
                self._dispatch(arg[1])
            if i < len(t.argnames)-1:
                self._write(', ')
        self._write(")")
        if self._single_func:
            self._do_indent = False
        self._enter()
        self._dispatch(t.code)
        self._leave()
        self._do_indent = True