NameError: name 'training_dataloader' and 'validation_dataloader' is not defined

[Rahul-351]

In the Inference_example.py file 'training_dataloader' and 'validation_dataloader' is not defined. When I am using this it shown a error
Traceback (most recent call last):
File "C:\Users\admin\Desktop\Transformer-main\inference_example.py", line 47, in
for i, (src, tgt, tgt_y) in enumerate(training_dataloader):
^^^^^^^^^^^^^^^^^^^
NameError: name 'training_dataloader' is not defined