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Python tips (interactive shell, pip wheels)

1. What is it / What is it for?

Miscellaneous Python notes: enabling tab-completion in the interactive shell, and a tip that .whl files are just zip archives.

  • Making the plain python REPL usable (tab completion).
  • Understanding that you can inspect/unpack a .whl like any zip.

2. How to download / install

For tab completion, install the readline helpers:

sudo pip install readline rlcompleter3

Create ~/.pythonrc:

# ~/.pythonrc — enable tab completion
try:
    import readline
except ImportError:
    print("Module readline not available.")
else:
    import rlcompleter
    readline.parse_and_bind("tab: complete")

Then in ~/.bashrc:

export PYTHONSTARTUP=~/.pythonrc

3. How to use

Start python and press Tab to complete names. For Windows prebuilt wheels, see https://www.lfd.uci.edu/~gohlke/pythonlibs/ . The .whl format is a zip — unzip package.whl works.