Q:

NameError: "linear regression" is not defined

Here is a code snippet where I am applying Linear regression using Pytorch. I face a NameError, that says name "linear regression" not defined. Kindly help in rectifying it. 
import torch
from torch.autograd import Variable
import torch.nn as nn
import torch.nn.functional as F

x_data=Variable(torch.Tensor([[10.0],[9.0],[3.0],[2.0]]))
y_data=Variable(torch.Tensor([[90.0],[80.0],[50.0],[30.0]]))

class LinearRegression(torch.nn.Module):

  def __init__(self):
    super(LinearRegression,self). __init__ ()
    self.linear = torch.nn.Linear(1,1)

  def forward(self, x):
    y_pred = self.linear(x)
    return y_pred

  model = LinearRegression()

A:

model = LinearRegression() should be outside class
import torch
from torch.autograd import Variable
import torch.nn as nn
import torch.nn.functional as F

x_data=Variable(torch.Tensor([[10.0],[9.0],[3.0],[2.0]]))
y_data=Variable(torch.Tensor([[90.0],[80.0],[50.0],[30.0]]))

class LinearRegression(torch.nn.Module):

  def __init__(self):
    super(LinearRegression,self). __init__ ()
    self.linear = torch.nn.Linear(1,1)

  def forward(self, x):
    y_pred = self.linear(x)
    return y_pred

model = LinearRegression()

