title: Plotting multiple lines in python
body: <p>I am new in Python and I want to plot multiple lines in one graph like in the figure below. </p>
  
  <p><a href="https://i.stack.imgur.com/PzfCi.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/PzfCi.png" alt="enter image description here"></a></p>
  
  <p>I have tried write simple plotting code like this:
  <a href="https://i.stack.imgur.com/YtpNX.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YtpNX.png" alt="enter image description here"></a></p>
  
  <p>I know these parameters</p>
  
  <pre><code> # red dashes, blue squares and green triangles
      plt.plot(t, t, 'r--', t, t**2, 'bs', t, t**3, 'g^')
  </code></pre>
  
  <p>But I have a lot of lines such in the first figure, what kind of parameters which I can use to plotting like the first figure. </p>
  
  <p>Thank you</p>