User Manual
14-1
Chapter 14 PYTHON 
(fx-9860GIII, fx-9750GIII only)
The PYTHON mode provides a runtime environment for the Python programming language. 
You can use the PYTHON mode to create, save, edit, and run Python files.
Important!
• The PYTHON mode supports a version of MicroPython Version 1.9.4, which has been 
adapted to run on this calculator. Note that generally, MicroPython is different from the 
Python that runs on a computer. Also, the PYTHON mode does not support all of the 
functions, commands, modules, and libraries of MicroPython.
• MicroPython is an open-source project. For license information, refer to “MicroPython license 
information” (
page -1).
• The PYTHON mode performs executions using the MicroPython processing system. 
Because of this, calculation results and other data produced by this mode may differ from 
execution results of other function modes.
• Python is a registered trademark of the Python Software Foundation. Trademark (™) and 
registered trademark (®) symbols are not used in this manual.
1. PYTHON Mode Overview
 k File List Screen
The first thing that appears when you select the PYTHON mode on the main menu is the file 
list screen.
When no py file* or folder is in 
memory
When there are py files or 
folders in memory
* In this manual, a file created in the PYTHON mode (file name extension py) is referred to as 
a “py file”.
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