1. Boolean Values

Meaning: Represents true or false in judgments, generally used in conditional tests.

a = True
print(a)
print(10 < 5)
print(10 > 8)

# output
True
False
True

1. Creating a Tuple

• Use parentheses to create a tuple.
• Separate elements with commas.

tup = (2, "x", "y")
print(tup, type(tup))

# output
(2, 'x', 'y') <class 'tuple'>

1. How to Create a Phone Book

Suppose we have the following contacts:

1. Creating a Set

1. Directly use curly braces to create.

set1 = {1, 2, 3, 4, 5}

1. List Structure

• Use square brackets to represent lists.
• Elements inside the list are separated by commas.
• Note that it is in the English input method.

Submission instructions

1. You should submit your homework on GitHub.
2. For this assignment you should turn in 4 separate .py files named according to the following pattern: hw1_q1.py, hw1_q2.py, etc.
3. Each Python file you submit should contain a header comment block as follows:

Session 1 – Introduction (Dec. 22nd)

1. Characteristics of Numeric Types

In [2]: 1+1
Out[2]: 2

In [3]: 1+1.0
Out[3]: 2.0

In [4]: 9-1
Out[4]: 8

In [5]: 9-1.0
Out[5]: 8.0

In [6]: 2*2
Out[6]: 4

In [7]: 2*2.0
Out[7]: 4.0

In [8]: 9/3
Out[8]: 3.0

In [9]: # If one of the numbers is float, the result will be float (highest priority)

In [10]: # Division involves precision issues, so the result is a float

1. Definition of Strings

A string is a sequence composed of letters, numbers, and special characters.

2. Creating Strings

— Using single quotes, double quotes, or triple quotes.