Comparison Operators

Intermediate Python

Hugo Bowne-Anderson

Data Scientist at DataCamp

NumPy recap

# Code from Intro to Python for Data Science, Chapter 4
import numpy as np
np_height = np.array([1.73, 1.68, 1.71, 1.89, 1.79])
np_weight = np.array([65.4, 59.2, 63.6, 88.4, 68.7])
bmi = np_weight / np_height ** 2
bmi

array([ 21.852,  20.975,  21.75 ,  24.747,  21.441])

bmi > 23

array([False, False, False,  True, False], dtype=bool)

bmi[bmi > 23]

array([ 24.747])

Comparison operators: how Python values relate

Numeric comparisons

2 < 3

True

2 == 3

False

2 <= 3

True

3 <= 3

True

x = 2
y = 3

x < y

True

Other comparisons

"carl" < "chris"

True

3 < "chris"

TypeError: unorderable types: int() < str()

3 < 4.1

True

Other comparisons

bmi

array([21.852, 20.975, 21.75 , 24.747, 21.441])

bmi > 23

array([False, False, False, True, False], dtype=bool)

Comparators

Comparator	Meaning
`<`	Strictly less than
`<=`	Less than or equal
`>`	Strictly greater than
`>=`	Greater than or equal
`==`	Equal
`!=`	Not equal

Let's practice!

Intermediate Python