When train the model with running main.py, i triggers a TypeError

[Geek-Peng]

Error message is as follow:
File "F:/Implementation-CVPR2015-CNN-for-ReID-master/CUHK03/main.py", line 109, in
main('F:/Implementation-CVPR2015-CNN-for-ReID-master/CUHK03/cuhk-03.h5')

File "F:/Implementation-CVPR2015-CNN-for-ReID-master/CUHK03/main.py", line 21, in main
train(model, dataset_path)

File "F:/Implementation-CVPR2015-CNN-for-ReID-master/CUHK03/main.py", line 49, in train
model.fit_generator(Data_Generator.flow(f,flag = flag_train),
one_epoch,epoch_num,
validation_data=Data_Generator.flow(f,train_or_validation=which_val_data,flag=flag_val),
nb_val_samples=nb_val_samples)

File "E:\Anaconda\lib\site-packages\keras\legacy\interfaces.py", line 91, in wrapper
return func(*args, **kwargs)

File "E:\Anaconda\lib\site-packages\keras\engine\training.py", line 2079, in fit_generator
do_validation = bool(validation_data)

TypeError: 'float' object cannot be interpreted as an integer

python version: 3.5.2
keras version:2.1.5
tensorflow-gpu:1.7
OS:windows 10

It seems that bool() need a integer argument,but 'validation_data' is an object of class 'NumpyArrayIterator_for_CUHK03 '. I don't know how to deal with it.Thanks for your help.
@Ning-Ding

[abhigoku10]

@Geek-Peng you have to use keras version 2.0.0 since the numpy structure in keras version >2 is different