Tirsvad
0227b109d9
Six pages and a sidebar, each lecture step with its screenshot and what it taught; review record RC-008. Refs #14 Refs #15 Refs #16 Refs #17 Refs #18
29 lines
1.0 KiB
Markdown
29 lines
1.0 KiB
Markdown
# Step 4: fast against slow
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**English** · [Dansk](Step-4-Fast-vs-Slow-da) · [Bahasa Malaysia](Step-4-Fast-vs-Slow-ms)
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`@speed_calc_decorator` above both functions of the assignment gives the expected output:
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```python
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@speed_calc_decorator
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def fast_function():
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for i in range(1_000_000):
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i * i
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@speed_calc_decorator
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def slow_function():
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for i in range(10_000_000):
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i * i
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```
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Run it with `python -m speed_calc`.
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## What we gained
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- One decorator times any number of functions; the timing code is written once.
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- `slow_function` loops ten times as often as `fast_function`, so it takes about ten times as long. The numbers differ on every machine, but the ratio does not.
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- A clean layout for a small exercise: `src/` for code, `tests/` for tests, `docs/` for documents, `constants.py` for constants, and Doxygen comments for the API.
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