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  3. Software Engineering Principles in Python

Exercise

Python modularity in the wild

In the slides, we covered 3 ways that you can write modular code with Python: packages, classes, and methods. For reference, you can see the example code we reviewed below.

# Import the pandas PACKAGE
import pandas as pd

# Create some example data
data = {'x': [1, 2, 3, 4], 
        'y': [20.1, 62.5, 34.8, 42.7]}

# Create a dataframe CLASS object
df = pd.DataFrame(data)

# Use the plot METHOD
df.plot('x', 'y')

In this exercise, you'll utilize a class & a method from the popular package numpy.

Instructions

100 XP
  • Complete the import statement to load the numpy package.
  • Use numpy's array class to define arr.
  • Use arr's sort method to sort the numpy array.