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Code Keys/PySpark Academy/Module 02/Lesson 14
PYSPARK • LESSON 14

Print Schema Tree with printSchema()

How do we print a formatted hierarchical tree of DataFrame column names and types?

Beginner⏱ 2 Minutes⭐ 155 XP
🤔 THE QUESTION

How do we print a formatted hierarchical tree of DataFrame column names and types?

💡 WHAT IS IT?

printSchema() prints an ASCII tree structure detailing column names, data types, and nullability flags.

🎯 WHAT IS IT USED FOR?

Verifying schema transformations, inspecting nested JSON structs, and visual documentation in notebooks.

💻 EXAMPLE
df.printSchema()

🎯 Mission Objectives

Practice typing production-grade PySpark code for Print Schema Tree with printSchema().

  • ✓ Execute printSchema() method
  • ✓ Inspect visual schema tree
  • ✓ Check nullability constraints
🚀 Start Mission
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