keras/backend/theano_backend.py (4 lines):
	- line 747: # TODO remove this if statement when Theano without
	- line 771: # TODO remove this if statement when Theano without
	- line 791: # TODO remove this function when Theano without
	- line 839: # TODO remove this if statement when Theano without


keras/engine/network.py (2 lines):
	- line 519: # TODO: support it in subclassed networks after inputs are set.
	- line 685: # TODO: raise exception when a `.compute_mask()` call


keras/layers/convolutional_recurrent.py (1 line):
	- line 466: # TODO: consider batch calls to `set_value`.


keras/engine/training.py (1 line):
	- line 764: # TODO: consider supporting it.


keras/layers/recurrent.py (1 line):
	- line 732: # TODO: consider batch calls to `set_value`.


keras/backend/cntk_backend.py (1 line):
	- line 176: # TODO: remove the conversion when cntk supports int32, int64


keras/backend/tensorflow_backend.py (1 line):
	- line 408: # TODO: move to Variable constructor when supported in public release.


keras/preprocessing/sequence.py (1 line):
	- line 13: _remove_long_seq = sequence._remove_long_seq  # TODO: make it public?