37 lines
1.2 KiB
Markdown
37 lines
1.2 KiB
Markdown
---
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id: practical-python-1.2
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source_exercise_id: "1.2"
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title: "Getting help"
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section: "1.1 Python"
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source_path: "01_Introduction/01_Python.md"
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source_repo: "https://github.com/dabeaz-course/practical-python"
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source_commit: "93dca856b41c61a0a0f85ae334116e4c125629ea"
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student_visible_solution: false
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has_private_solution: false
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skip: false
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---
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# Exercise 1.2: Getting help
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> Source: Practical Python Programming, `01_Introduction/01_Python.md`.
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### Exercise 1.2: Getting help
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Use the `help()` command to get help on the `abs()` function. Then use
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`help()` to get help on the `round()` function. Type `help()` just by
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itself with no value to enter the interactive help viewer.
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One caution with `help()` is that it doesn’t work for basic Python
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statements such as `for`, `if`, `while`, and so forth (i.e., if you type
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`help(for)` you’ll get a syntax error). You can try putting the help
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topic in quotes such as `help("for")` instead. If that doesn’t work,
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you’ll have to turn to an internet search.
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Followup: Go to <https://docs.python.org/3/> and find the documentation for
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the `abs()` function (hint: it’s found under the library reference
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related to built-in functions).
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## 关联来源
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- [[summaries/01_Python]]
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