---
id: practical-python-1.2
source_exercise_id: "1.2"
title: "Getting help"
section: "1.1 Python"
source_path: "01_Introduction/01_Python.md"
source_repo: "https://github.com/dabeaz-course/practical-python"
source_commit: "93dca856b41c61a0a0f85ae334116e4c125629ea"
student_visible_solution: false
has_private_solution: false
skip: false
---

# Exercise 1.2: Getting help

> Source: Practical Python Programming, `01_Introduction/01_Python.md`.

### Exercise 1.2: Getting help

Use the `help()` command to get help on the `abs()` function. Then use
`help()` to get help on the `round()` function. Type `help()` just by
itself with no value to enter the interactive help viewer.

One caution with `help()` is that it doesn’t work for basic Python
statements such as `for`, `if`, `while`, and so forth (i.e., if you type
`help(for)` you’ll get a syntax error). You can try putting the help
topic in quotes such as `help("for")` instead. If that doesn’t work,
you’ll have to turn to an internet search.

Followup: Go to <https://docs.python.org/3/> and find the documentation for
the `abs()` function (hint: it’s found under the library reference
related to built-in functions).

## 关联来源

- [[summaries/01_Python]]