tqdm

https://tqdm.github.io

tqdm means "progress" in Arabic (taqadum, تقدّم) and is an
abbreviation for "I love you so much" in Spanish (te quiero demasiado).

Instantly make your loops show a smart progress meter and stats - just replace any pipe "|" with "| tqdm |", and you're done!

$ seq 9999999 | tqdm --bytes | wc -l

75.2MB [00:00, 217MB/s]

9999999

$ 7z a -bd -r backup.7z docs/ | grep Compressing | \

  tqdm --total $(find docs/ -type f | wc -l) --unit files >> backup.log

100%|███████████████████████████████▉| 8014/8014 [01:37<00:00, 82.29files/s]

Overhead is low -- about 60ns per iteration.

In addition to its low overhead, tqdm uses smart algorithms to predict
the remaining time and to skip unnecessary iteration displays, which
allows for a negligible overhead in most cases.

tqdm works on any platform (Linux, Windows, Mac, FreeBSD, NetBSD,
Solaris/SunOS), in any console or in a GUI, and is also friendly with
IPython/Jupyter notebooks.

tqdm does not require any dependencies, just
an environment supporting carriage return \r and line feed \n control characters.