task35
lst = [(1, 3, 4), (2, 1), (6,), (2, 2, 2, 1)] 
# Генератор списков 
result = [t[:-1] if len(t) % 2 == 0 else t for t in lst]
print(result)

task65
result = [(t[:-1] if len(t) % 2 == 0 else t) for t in [(1,3,4), (2,1), (6,), (2,2,2,1)]]
print(result)

