title: Is there a way to make certain letter variables a default value?
body: <p>For the example I have below I am wondering if I could use an &quot;if&quot; statement so when a variable, that is not A,C,G, or T, is selected the resulting value is [0,0,0,0]. I understand that the version that I have below works. The problem is that I am knowing there is a much more convenient way of getting to this step. I would appreciate any help.</p>
  <pre><code>A = [1,0,0,0]
  
  C = [0,1,0,0]
  
  G = [0,0,1,0]
  
  T = [0,0,0,1]
  
  B = D = E = F = H = I = J = K = L = M = N = O = P = Q = R = S = U = V = W = X = Y = Z = [0,0,0,0]
  
  print(A,C,G,T,M)
  
  [1, 0, 0, 0] [0, 1, 0, 0] [0, 0, 1, 0] [0, 0, 0, 1] [0, 0, 0, 0]
  </code></pre>