# Key Terms — File I/O — Reading from and Writing to External Files (open(), read(), write())

- Link: https://doss.academy/course-3-introduction-to-programming/unit-6-data-structures-file-processing-file-i-o/lesson-3-file-i-o-reading-from-and-writing-to-external-files-open-read-write/key-terms/
- Published: 2026-10-18T12:32:38-04:00
- Author: matthew.leffler@jefferson.kyschools.us

Course 3: Introduction to Programming / Unit 6: Data Structures & File Processing(
File I/O) / Lesson 3: File I/O — Reading from and Writing to External Files (open(),
read(), write())

## Vocabulary focus

File I/O, open(), read(), write(), File Mode ('r', 'w', 'a'), with Statement, Text
File, Persistent Storage, File Pointer, File Closing

## Build your glossary

For each term or concept, write an explanation in your own words and add an example
from this lesson. Check your explanation against the lesson resources.

  |  Term or concept |  My explanation |  Example |  
   |  ________________ |  ________________ |  ________________ |  
 |  ________________ |  ________________ |  ________________ |