final void file_writelines(PyObject a) {
PyObject iter = Py.iter(a, "writelines() requires an iterable argument");
PyObject item = null;
while ((item = iter.__iternext__()) != null) {
if (!(item instanceof PyString))
throw Py.TypeError("writelines() argument must be a " + "sequence of strings");
write(item.toString());
}
}
// Return a copy of a sequence where the __len__() method is
// telling the thruth.
protected static PyObject fastSequence(PyObject seq, String msg) {
if (seq instanceof PyList || seq instanceof PyTuple) return seq;
if (!seq.isSequenceType()) throw Py.TypeError(msg);
PyList list = new PyList();
PyObject iter = Py.iter(seq, msg);
for (PyObject item = null; (item = iter.__iternext__()) != null; ) {
list.append(item);
}
return list;
}