A progress bar for scikit-learn?

If you initialize the model with verbose=1 before calling fit you should get some kind of output indicating the progress.

For example sklearn.ensemble.GradientBoostingClassifer(verbose=1) provides progress output that looks like this:

  Iter       Train Loss   Remaining Time
     1           1.2811            0.71s
     2           1.2595            0.58s
     3           1.2402            0.50s
     4           1.2263            0.46s
     5           1.2121            0.43s
     6           1.1999            0.41s
     7           1.1876            0.39s
     8           1.1761            0.38s
     9           1.1673            0.37s
    10           1.1591            0.36s
    20           1.1021            0.29s
    30           1.0511            0.27s
    40           1.0116            0.25s
    50           0.9830            0.22s
    60           0.9581            0.19s
    70           0.9377            0.16s
    80           0.9169            0.14s
    90           0.9049            0.12s
   100           0.8973            0.10s