https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:program-execution/a/data-types 2026-02-17T23:20:43.373798125Z Data types Recognize the primitive data types that make up all programs: integers, floats, strings, and booleans. article https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:program-execution/v/plus-operator-and-the-print-function 2024-12-03T18:24:09.516570631Z Print statements and expressions Evaluate Python expressions that use the plus operator. Add integer, float, and boolean data types, and apply string concatenation to add strings together. Ask the computer to display the result in the console using the print function. View the program used in this video at: https://www.khanacademy.org/python-program/print-statements-and-adding-values/4573958848823296 Kim Merrill video https://cdn.kastatic.org/ka_thumbnails_cache/34d5e5d0-877e-4132-9339-6ee95365e882_1280_720_base.png Print statements and expressions Evaluate Python expressions that use the plus operator. Add integer, float, and boolean data types, and apply string concatenation to add strings together. Ask the computer to display the result in the console using the print function. View the program used in this video at: https://www.khanacademy.org/python-program/print-statements-and-adding-values/4573958848823296 https://cdn.kastatic.org/ka-youtube-converted/lkQT8zb0_A8.mp4/lkQT8zb0_A8.mp4 289 Program execution https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:program-execution/v/intro-to-tracing-program-execution 2024-07-12T20:30:27.418012547Z Tracing program execution What happens when you press the Run button? Trace the execution of a basic Python program to understand how the computer evaluates expressions with the plus operator and interprets print instructions. View the program used in this video at: https://www.khanacademy.org/python-program/tracing-program-execution/6568538259767296 Kim Merrill video https://cdn.kastatic.org/ka_thumbnails_cache/458599a8-c322-4518-b6f5-5c63cc3414f6_1280_720_base.png Tracing program execution What happens when you press the Run button? Trace the execution of a basic Python program to understand how the computer evaluates expressions with the plus operator and interprets print instructions. View the program used in this video at: https://www.khanacademy.org/python-program/tracing-program-execution/6568538259767296 https://cdn.kastatic.org/ka-youtube-converted/N-oyB_UYZ74.mp4/N-oyB_UYZ74.mp4 308 Program execution https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:program-execution/a/errors 2025-05-21T19:09:13.871509681Z Syntax, runtime, and logic errors Learn how to identify whether a bug is the result of a syntax error, runtime error, or logic error in a program. article https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:program-execution/e/tracing-program-execution 2024-06-26T17:36:20.61941996Z Trace program execution Trace basic programs with print statements. Nathaniel Shak exercise https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:program-execution/v/debugging-with-linters-and-stack-traces 2024-12-02T21:11:23.197431827Z Debugging with stack traces Code along with a software engineer in this debugging worked example using error messages. How can I figure out what's causing the error in my program? Learn how to interpret stack traces and linter messages to debug syntax errors, runtime errors, and logic errors. View the program used in this video at: https://www.khanacademy.org/python-program/debugging-with-linters-and-stack-traces/6312907118395392 Kim Merrill video https://cdn.kastatic.org/ka_thumbnails_cache/60a89b88-34f7-4871-b229-d86e9b37f287_1280_720_base.png Debugging with stack traces Code along with a software engineer in this debugging worked example using error messages. How can I figure out what's causing the error in my program? Learn how to interpret stack traces and linter messages to debug syntax errors, runtime errors, and logic errors. View the program used in this video at: https://www.khanacademy.org/python-program/debugging-with-linters-and-stack-traces/6312907118395392 https://cdn.kastatic.org/ka-youtube-converted/WUoCSkSW4cs.mp4/WUoCSkSW4cs.mp4 350 Program execution https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:program-execution/pc/pair-programming 2025-07-31T21:21:55.467479557Z Challenge: Pair programming Practice debugging print statements with different data types. challenge https://www.khanacademy.org/computing/intro-to-python-fundamentals/x5279a44ae0ab15d6:computational-thinking-with-variables/x5279a44ae0ab15d6:reference-docs-variables/a/debugging-challenges 2025-11-12T18:20:49.12430552Z How to debug a Challenge What do you do when you're stuck on Challenge? Use this guide to debug your program. article