Chapter 1 code segment

Question 1

Snippet

Answer 1

A small region of re-usable source code, machine code, or text

Question 2

Terminal

Answer 2

Text-based interface to the computer

Question 3

Type ipython on terminal and press Enter to enter interactive mode

Answer 3

Get:
Python 3.7.0 | packaged by condo-forge | (default, Jan 20 2019, 17:24:52)
Type ‘copyright’, ‘credits’ or ‘license’ for more information
IPython 6.5.0 — An enchanced Interactive Python. Type ‘?’ For help.

In [1]

Here [1] is prompt, indicating that IPython is waiting for your input. Can type math equation if you want to

Question 4

Integers

Answer 4

Whole numbers

Question 5

Floating-point numbers

Answer 5

Whole n umbers with decimal points

Question 6

To exit interactive mode

Answer 6

<Ctrl> + d (or <control> + d)
This displays the prompt “Do you really want to exit ([y]/n)?” The square brackets around y indicate that it’s the default response-pressing Enter submits the default espouse and exits
</control></Ctrl>

Question 7

To exit interactive mode on Linux or macOS type what?

Answer 7

Type <Ctrl>+d(or<control>+d) twice</control></Ctrl>

Question 8

In IPython interactive mode, you’ll need small bits of Python code called ______ and immediately see their results

Answer 8

Snippets

Question 9

In IPython ________ mode, you’ll execute Python code loaded from a file that has the .py extension (short for Python)

Answer 9

Script

Question 10

Evaluate the expression 5 * (3 + 4) both with and without the parenthesis. Do you get the same result? Why or why not?

Answer 10

You get different results because snippet [1] first calculates 3 + 4, which is 7, then multiplies that by 5. Snippet [2] first multiplies 5 * 3, which is 15, then adds that 4

Question 11

What does it mean if a file name ends in .py?

Answer 11

The .py extension indicates that the file contains Python source code.

Question 12

Variables

Answer 12

Stored values for later use in your code. Ex:
In [1]: x = 7
These are known as statements, it is a specified task to perform. The entire statement is an assignment statement.

Question 13

Assignment symbol

Answer 13

In the variables example, this is (=)

Question 14

Addition operator

Answer 14

+

Question 15

Binary operator

Answer 15

Has two operands such as x + y