title: Pass value in the text of plt.text function
body: <p>Here is the abstracted problem, every time <code>lst</code> is different, so I want to do it automatically</p>
  
  <pre><code>import matplotlib.pyplot as plt
  import numpy as np
  fig=plt.figure()
  fig.set_size_inches(8,4)
  lst=np.array ([0.1235,0.2322,0.3300]) 
  #how can I directly pass these value to plt.text, without manually input
  plt.text(0.05,0.6,r'a=0.124,  b=0.232,  c=0.330',fontsize=18)
  plt.show()
  </code></pre>