title: Where are saved files in Google Colab located?
body: <p>I'm trying to access a VTK file where the solution to the heat equation is saved, but I've no idea where it's saved in Colab. </p>
  
  <pre><code>from fenics import *
  import time
  T = 2.0            # final time
  num_steps = 50     # number of time steps
  dt = T / num_steps # time step size
  # Create mesh and define function space
  nx = ny = 30
  mesh = RectangleMesh(Point(-2, -2), Point(2, 2), nx, ny)
  V = FunctionSpace(mesh, 'P', 1)
  # Define boundary condition
  def boundary(x, on_boundary):
      return on_boundary
  bc = DirichletBC(V, Constant(0), boundary)
  # Define initial value
  u_0 = Expression('exp(-a*pow(x[0], 2) - a*pow(x[1], 2))',
                   degree=2, a=5)
  u_n = interpolate(u_0, V)
  # Define variational problem
  u = TrialFunction(V)
  v = TestFunction(V)
  f = Constant(0)
  F = u*v*dx + dt*dot(grad(u), grad(v))*dx - (u_n + dt*f)*v*dx
  a, L = lhs(F), rhs(F)
  # Create VTK file for saving solution
  vtkfile = File('heat_gaussian/solution.pvd')
  # Time-stepping
  u = Function(V)
  t=0
  for n in range(num_steps):
      # Update current time
      t += dt
      # Compute solution
      solve(a == L, u, bc)
      # Save to file and plot solution
      vtkfile &lt;&lt; (u, t)
      plot(u)
      # Update previous solution
      u_n.assign(u)
  # Hold plot
  #interactive()
  </code></pre>
  
  <p>I've tried;</p>
  
  <pre><code>from google.colab import files
  plt.savefig("vtkfile")
  files.download("vtkfile")
  </code></pre>
  
  <p>And</p>
  
  <pre><code>from google.colab import files files.upload()
  from google.colab import drive drive.mount('vtkfile')
  </code></pre>
  
  <p>But still getting errors. Where are files created in the notebook stored?</p>