After reading the following text, tell me what a variable is, according to what the text says? Text: "A value is one of the basic things a program works with, like a letter or a number.
The values we have seen so far are 1, 2, and “Hello, World!”
These values belong to different types: 2 is an integer, and “Hello, World!” is a
string, so called because it contains a “string” of letters. You (and the interpreter)
can identify strings because they are enclosed in quotation marks.
The print statement also works for integers. We use the python command to start
the interpreter.
python
>>> print(4)
4
If you are not sure what type a value has, the interpreter can tell you
<class 'float'>
What about values like “17” and “3.2”? They look like numbers, but they are in
quotation marks like strings.
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20 CHAPTER 2. VARIABLES, EXPRESSIONS, AND STATEMENTS
>>> type('17')
<class 'str'>
>>> type('3.2')
<class 'str'>
They’re strings.
When you type a large integer, you might be tempted to use commas between
groups of three digits, as in 1,000,000. This is not a legal integer in Python, but it
is legal:
>>> print(1,000,000)
1 0 0
Well, that’s not what we expected at all! Python interprets 1,000,000 as a commaseparated sequence of integers, which it prints with spaces between.
This is the first example we have seen of a semantic error: the code runs without
producing an error message, but it doesn’t do the “right” thing.
2.2 Variables
One of the most powerful features of a programming language is the ability to
manipulate variable There should be exactly 3 paragraphs separated by the markdown divider: ***.
user