tqdm
A Fast, Extensible Progress Bar for Python and CLI
...Simply wrap any iterable with tqdm(iterable), and sit back and watch that progress meter go!
tqdm can be wrapped around any iterable, or executed as a module with pipes. Just by inserting tqdm (or python -m tqdm) between pipes will pass through all stdin to stdout while printing progress to stderr.
tqdm does not require any dependencies, has a very low overhead and uses smart algorithms to predict the remaining time and skip unnecessary iteration displays. It works on just about any platform, console or in a GUI, as well as IPython/Jupyter notebooks.