Finding out the duplicate colour names

gistfile1.py

>>>> import csv
>>>> f = open("colors.txt")
>>>> ramalan = csv.reader(f, delimiter=',')
>>>> colours = []
>>>> for x in ramalan:
...      colours.append(x)
...

# Here we get rid of some malformed entries
>>>> colours = [c for c in colours if len(c) == 2]

# Now we look for duplicates by keeping track of what's been seen
>>>> seen = []
>>>> for c in colours:
...      for s in seen:
...           if c[0]==s[0] and c[1]!=s[1]: # hex same, name different
...               print c[1] + " with " + s[1] + " (" + c[0] + ")"
...      if c not in seen:
...          seen.append(c)
...