Simplify early material

[LiamPattinson]

Resolves #8

Cuts a lot of early material to include only what is needed to get the point across. Teaches good practice from the start rather than introducing AssertionError before the assert command.

Also contains some formatting/grammar/typo fixes.

[github-actions]

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Rendered Changes

🔍 Inspect the changes: https://github.com/ResearchCodingClub/python-testing-for-research/compare/md-outputs..md-outputs-PR-10

The following changes were observed in the rendered markdown documents:

 01-why-test-my-code.md |  98 +++++++++++++++++++++++------------
 02-simple-tests.md     | 136 ++++++++++++++++---------------------------------
 md5sum.txt             |  42 +++++++--------
 3 files changed, 131 insertions(+), 145 deletions(-)

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If you have source files that require output and figures to be generated (e.g. R Markdown), then it is important to make sure the generated figures and output are reproducible.

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⏱️ Updated at 2026-02-11 12:18:16 +0000