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Python for Everybody

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课程简介

Python for Everybody 零基础程序设计（Python 入门）

• This course aims to teach everyone the basics of programming computers using Python. 本课程旨在向所有人传授使用 Python 进行计算机编程的基础知识。
• We cover the basics of how one constructs a program from a series of simple instructions in Python. 我们介绍了如何通过 Python 中的一系列简单指令构建程序的基础知识。
• The course has no pre-requisites and avoids all but the simplest mathematics. Anyone with moderate computer experience should be able to master the materials in this course. 该课程没有任何先决条件，除了最简单的数学之外，避免了所有内容。任何具有中等计算机经验的人都应该能够掌握本课程中的材料。
• This course will cover Chapters 1-5 of the textbook “Python for Everybody”. Once a student completes this course, they will be ready to take more advanced programming courses. 本课程将涵盖《Python for Everyday》教科书的第 1-5 章。学生完成本课程后，他们将准备好学习更高级的编程课程。
• This course covers Python 3.

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coursera

Python for Everybody 零基础程序设计（Python 入门）

Charles Russell Severance
Clinical Professor

个人主页
Twitter

University of Michigan

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课程资源

coursera原版课程视频
coursera原版视频-中英文精校字幕-B站
Dr. Chuck官方翻录版视频-机器翻译字幕-B站

PY4E-课程配套练习
Dr. Chuck Online - 系列课程开源官网

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Quiz 16_3-1: Databases

Databases give us very fast random access to large amounts of data. There is a lot of material in this chapter as we learn the Structured Query Language (SQL).

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单选题（1-11）

1. Structured Query Language (SQL) is used to (check all that apply)

• Insert data
• Delete data
• Create a table
• Check Python code for errors

2. Which of these is the right syntax to make a new table?

• CREATE TABLE people;
• MAKE DATASET people;
• MAKE people;
• CREATE people;

3. Which SQL command is used to insert a new row into a table?

• INSERT INTO
• INSERT ROW
• INSERT AFTER
• ADD ROW

4. Which command is used to retrieve all records from a table?

• RETRIEVE all FROM User
• RETRIEVE * FROM Users
• SELECT all FROM Users
• SELECT * FROM Users

5. Which keyword will cause the results of the query to be displayed in sorted order?

• None of these
• ORDER BY
• GROUP BY
• WHERE

6. In database terminology, another word for table is

• attribute
• relation
• row
• field

7. In a typical online production environment, who has direct access to the production database?

• Developer
• Project Manager
• Database Administrator
• UI/UX Designer

8. Which of the following is the database software used in this class?

• SQLite
• Postgres
• SQL Server
• MySQL
• Oracle

9. What happens if a DELETE command is run on a table without a WHERE clause?

• All the rows without a primary key will be deleted
• All the rows in the table are deleted
• The first row of the table will be deleted
• It is a syntax error

10. Which of the following commands would update a column named “name” in a table named “Users”?

• Users->name = ‘new name’ WHERE …
• UPDATE Users (name) VALUES (‘new name’) WHERE …
• Users.name=‘new name’ WHERE …
• UPDATE Users SET name=‘new name’ WHERE …

11. What does this SQL command do?

SELECT COUNT(*) FROM Users

Hint: This is not from the lecture

• It counts the rows in the table Users
• It only retrieves the rows of Users if there are at least two rows
• It adds a COUNT column to the Users table
• It is a syntax errror

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操作题

Autograder: Single Table SQL

Instructions
If you don’t already have it, install the SQLite Browser from http://sqlitebrowser.org/.

Then, create a SQLITE database or use an existing database and create a table in the database called “Ages”:

CREATE TABLE Ages ( 
  name VARCHAR(128), 
  age INTEGER
)

Then make sure the table is empty by deleting any rows that you previously inserted, and insert these rows and only these rows with the following commands:

DELETE FROM Ages;
INSERT INTO Ages (name, age) VALUES ('Emile', 13);
INSERT INTO Ages (name, age) VALUES ('Caidan', 23);
INSERT INTO Ages (name, age) VALUES ('Kirsteen', 19);
INSERT INTO Ages (name, age) VALUES ('Patsy', 33);
INSERT INTO Ages (name, age) VALUES ('Adain', 20);
INSERT INTO Ages (name, age) VALUES ('Lachlan', 25);

Once the inserts are done, run the following SQL command:

SELECT hex(name || age) AS X FROM Ages ORDER BY X

Find the first row in the resulting record set and enter the long string that looks like 53656C696E613333.
Note: This assignment must be done using SQLite - in particular, the SELECT query above will not work in any other database. So you cannot use MySQL or Oracle for this assignment.