Introduction

“…tidy datasets are all alike but every messy dataset is messy in its own way” —Hadley Wickham 1

• A Tour of Datatest
  • Validation
  • Errors
  • Acceptances
  • Data Handling Tools
• Automated Testing
  • Pytest
  • Unittest
  • Data for Script Samples
• Pipeline Validation
  • Toggle Validation On/Off Using __debug__
  • Validate a Sample from a Larger Data Set
  • Testing Pipeline Code Itself
• Validating Pandas
  • DataFrame
  • Series
  • Index and MultiIndex

1

Wickham, Hadley. “Tidy Data.” Journal of Statistical Software 59, no. 10, August 2014.