Python incrementing array index through loop
<p>Im currently using xlwings to display graphs and their corresponding values in microsoft excel. I have 5 graphs and their coordinates(in an array) that i've successfully been able to print through a loop. Unfortunately the columns in which they appeared in had to be hard coded and would be affected if i were to add more plots, so i changed my code to:</p>

<pre><code>for i in range(1, 6):
    Columns = ["A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S"]

    Range(Columns[0] + str(1)).value = list(zip(Xvalues))
    Range(Columns[1] + str(1)).value = list(zip(Yvalues))
</code></pre>

<p>Currently it will take the first plot and print the x-coordinates vertically in Column A("A1") and then the y-coordinates also vertically in Column B("B1") and then continues. </p>

<p>My question is how can i increment the index of Columns[] within the loop so that my next values are Columns[3] and Columns[4]?</p>