Incorrect Unicode Win 11 Python SymPy

[giga-goga]

In my program I use python SymPy unicode pprint. Everything prints correctly when I launch .py from windows terminal, but when I use pyinstaller to make .exe it fails to write multiplication dot etc.
My build settings are pyinstaller --clean -F --python-option "X utf8=1"

How to fix this problem?

[ghostkillerr]

There are two different things to distinguish here: SymPy deciding to use ASCII instead of Unicode, and the terminal failing to encode/render characters that SymPy already generated.

Try forcing the printer explicitly:

import sys
from sympy import pprint, symbols

x, y = symbols('x y')
print('stdout:', sys.stdout.encoding, sys.stdout.errors)
print('utf8_mode:', sys.flags.utf8_mode)
pprint(x * y, use_unicode=True)
print('Unicode test: \u22c5 \u221a')

Run both the .py and the frozen .exe in the same Windows Terminal tab. SymPy documents use_unicode=True for overriding its automatic Unicode detection: printing documentation.

• If the explicit Unicode printer fixes it, the difference was printer detection.
• If you get UnicodeEncodeError, please include the traceback and the stdout diagnostic values.
• If printing succeeds but shows boxes or wrong glyphs, compare the terminal/font settings and whether output was redirected; UTF-8 mode does not provide missing font glyphs.

If you build from an existing .spec, check the interpreter options in its EXE call. Most command-line options are ignored when building a spec, so adding --python-option to that invocation may not change the embedded interpreter. See PyInstaller spec options.

I haven't reproduced your application; the test above separates the likely causes without assuming an encoding fix. Drafting was AI-assisted and checked against the linked documentation.