Python, data science, & software engineering

Software Engineering Principles in Python

Adam Spannbauer

Machine Learning Engineer at Eastman

Data Science Venn Diagram

Software engineering concepts

Modularity
Documentation
Testing
Version Control & Git

Benefits of modularity

Improve readability
Improve maintainability
Solve problems only once

Modular Puzzle Pieces

Modularity in python

# 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')

Benefits of documentation

Show users how to use your project
Prevent confusion from your collaborators
Prevent frustration from future you

Confused User

Benefits of automated testing

Save time over manual testing
Find & fix more bugs
Run tests anytime/anywhere

Squash Bugs with Pytest

Let's Review

Software Engineering Principles in Python