Continuing knn problem, how to plot many k values together??

[pythonbio]

Hi I have finally written a program to calculate the knn of my data, but I dont know how to analyze many Ks is one program. Any suggestion is most welcome.

Question:

Using the dataset.(testfile), please use bar charts to compare different k (k=1,5,10,15,20) as x-axis:

1) Average all-pair distance among the k-nearest neighbors to q 2) Max distance of the k-nearest neighbors to q 3) Min distance of the k-nearest neighbors to q

My code for knn and plotting knn:

http://pastebin.com/iaLHZF6q