Numbers

Question 1

Three numeric types in Python:

Answer 1

• int
• float
• complex

x = 1 # int
y = 2.8 # float
z = 1j # complex

Question 2

Verify the type of any object in Python

Answer 2

type( ) function:

print(type(x))
print(type(y))
print(type(z))

Question 3

Int, or integer

Answer 3

A whole number, positive or negative, without decimals, of unlimited length.

x = 1
y = 35656222554887711
z = -3255522

print(type(x))
print(type(y))
print(type(z))

Question 4

Float or “floating point number”

Answer 4

A number, positive or negative, containing one or more decimals.

x = 1.10
y = 1.0
z = -35.59

print(type(x))
print(type(y))
print(type(z))

Question 5

Float can also be scientific numbers with an:

Answer 5

“e” to indicate the power of 10.

x = 35e3
y = 12E4
z = -87.7e100

print(type(x))
print(type(y))
print(type(z))

Question 6

Complex numbers are written with a:

Answer 6

“j” as the imaginary part

x = 3+5j
y = 5j
z = -5j

print(type(x))
print(type(y))
print(type(z))

Question 7

Python does not have a random() function to make a random number, but Python has a built-in module called:

Answer 7

random that can be used to make random numbers:

Import the random module, and display a random number between 1 and 9:

import random
print(random.randrange(1, 10))