human
Solve the following python programming problem given the following code:
# Create Data Class

class Data(Dataset):
    
    # Constructor
    def __init__(self):
        self.x = torch.arange(-3, 3, 0.1).view(-1, 1)
        self.f = 1 * self.x - 1
        self.y = self.f + 0.1 * torch.randn(self.x.size())
        self.len = self.x.shape[0]
        
    # Getter
    def __getitem__(self,index):    
        return self.x[index],self.y[index]
    
    # Get Length
    def __len__(self):
        return self.len
Given the above code, generate some markdown instructions for it.
assistant
#Here is the Python code you requested.

Generate values from -3 to 3 that create a line with a slope of 1 and a bias of -1. This is the line that you need to estimate. Add some noise to the data: