Filter out all words that begin with P, B, or T.

[michalmonday]

Alternatively:

import re
colors = ["Red", "Orange", "Yellow", "Green", "Blue", "Indigo", "Violet", "Purple", "Pink", "Brown", "Teal", "Turquois", "Peach", "Beige"]
filtered_colors = list(filter(re.compile('[^PBT]').match, colors))
print(filtered_colors)

Output:
['Red', 'Orange', 'Yellow', 'Green', 'Indigo', 'Violet']