title: How do I include multiple variables in the title of my plot?
body: <p>I want the title to say 
  "Target Electron Temperature =Te_t [ev]
  Target Density=n_t [m^-3]" 
  Where Te_t and n_t are the values for the input variables.</p>
  
  <p>I can get it to work with just one of the variables in the title, just not both. </p>
  
  <pre><code>Te_t = float(input("Enter electron tartget temperature [ev]\n"))
  n_t = float(input("Enter target density [m^-3]\n")) 
  
  plt.title("Target Electron Temperature =%1.0f" %Te_t ,"[ev] \nTarget Density=%1.1f"%n_t,"[m^-3]")
  plt.plot(Ti_t/Te_t, q_par*1e-6)
  plt.xlabel("Ti_t/Te_t")
  plt.ylabel("Parallel Heat Flux [MW/m^2]")
  plt.show()
  </code></pre>
  
  <p>I am getting the following error in the console: "ValueError: "[m^-3]' is not a valid location"</p>