feat: add The Zen of Narwhals (#1168)

* feat: add The Zen of Narwhals

* coverage

narwhals/this.py

@@ -0,0 +1,17 @@
+# ruff: noqa
+ZEN = """\
+⣿⣿⣿⣿⣿⠘⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ THE ZEN OF NARWHALS
+⣿⣿⣿⣿⣿⠠⢹⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ Keep it simple
+⣿⣿⣿⣿⣿⡀⡄⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ Move slowly and keep things working
+⣿⣿⣿⣿⣿⡇⡼⡘⠛⠿⠿⠿⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ A good API is an honest one
+⣿⣿⣿⡿⣫⡄⠾⣣⠹⣿⣿⣿⣶⣮⣙⠻⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ Yes, that needs documenting
+⣿⣿⢋⣴⣿⣷⣬⣭⣾⣿⣿⣿⣿⣿⣿⣿⣦⡙⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ People learn better from examples
+⣿⢃⣾⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⡌⢿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ than from explanations⠀
+⡏⠀⢰⠄⢻⣿⣿⣿⣿⡿⠋⢉⠻⣿⣿⣿⣿⣿⣿⡜⣿⣿⡿⢁⢻⣿⣿⣿⣿⣿ If in doubt, say 'no'⠀
+⡇⣌⣀⣠⣾⣿⣿⣿⣿⣇⠶⠉⢁⣿⣿⣿⣿⣿⣿⣧⡹⣿⡇⣿⣧⠻⠿⠿⠿⠿ you can always reconsider⠀
+⡧⢹⣿⣿⣿⣜⣟⣸⣿⣿⣷⣶⣿⡿⣿⣿⣝⢿⣿⣿⣷⣬⣥⣿⣿⣿⣿⣿⡟⣰ Yes, we need a test for that
+⢡⣆⢻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿⣧⡙⣿⣿⡇⣿⣿⣿⣿⠟⣋⣭⣛⠻⣋⣴⣿ If you want users  
+⣶⣤⣤⣙⠻⣿⣿⣿⣿⣿⣿⣿⣿⣿⣷⣦⣍⣡⣿⡿⢋⣴⣿⣿⣿⣿⣿⣿⣿⣿ you need good docs⠀
+⣿⣿⣿⣿⣿⣶⣬⣙⣛⠻⠿⠿⠿⠿⠿⠟⣛⣩⣥⣶⣿⣿⣿⣿⣿⣿⣿⣿⣿⣿ Our code is not irreplaceable"""
+
+print(ZEN)

pyproject.toml

@@ -130,6 +130,7 @@ plugins = ["covdefaults"]
 omit = [
   'narwhals/typing.py',
   'narwhals/stable/v1/typing.py',
+  'narwhals/this.py',
   # we can run this in every environment that we measure coverage on due to upper-bound constraits
   'narwhals/_ibis/*',
 ]