Looks like the sublists are already sorted, so you can apply itertools.groupby
:
In [1]: data = [
...: [0.074, 0.073, 0.072, 0.03, 0.029, 0.024, 0.021, 0.02],
...: [0.02, 0.02, 0.015],
...: [0.026, 0.026, 0.02, 0.02, 0.02, 0.015],
...: [0.021, 0.021, 0.02, 0.017], [0.077, 0.076, 0.074, 0.055, 0.045, 0.021],
...: [0.053, 0.052, 0.051, 0.023, 0.022],
...: [0.016, 0.016]
...: ]
In [2]: from itertools import groupby
In [3]: [[k for k, g in groupby(subl)] for subl in data]
Out[3]:
[[0.074, 0.073, 0.072, 0.03, 0.029, 0.024, 0.021, 0.02],
[0.02, 0.015],
[0.026, 0.02, 0.015],
[0.021, 0.02, 0.017],
[0.077, 0.076, 0.074, 0.055, 0.045, 0.021],
[0.053, 0.052, 0.051, 0.023, 0.022],
[0.016]]