Working with uv and the pyproject.toml rules

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update code samples on learning platform to use flet 0.80 using uv sync –upgrade

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In the Industry Python course, Chapter 9 - https://industry-python.thinkific.com/courses/take/industry-projects-with-python/downloads/71672923-download-code-for-chapter-9

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main.py
pyproject.toml

Use uv to sync and run the code

README as setup and run instructions

update version of app in pyproject.toml using uv version or manually update

Use uv to upgrade flet

Look at header info in pyproject.toml (“before”)
Edit pyproject.toml header

dependencies = [  
   "flet[all]~=0.80",  
]

More here: https://docs.astral.sh/uv/reference/cli/#uv-sync

In pyproject.toml, the ~= operator is the compatible release specifier (PEP 440). It means:

Minimum version: 0.80 (inclusive)
Allowed updates: newer releases that keep the same “major.minor” (0.80.x, 0.81.x, …)
Upper bound: < 0.81

uv sync --upgrade

uv sync --upgrade will try to update the locked (resolved) versions in uv.lock to newer releases, then sync your environment to match.

What it upgrades is bounded by your constraints:

Your pyproject.toml specifiers (e.g., flet[all]~=0.80 means it can only go up to <0.81)

Edit description and add link to course

uv version --bump patch

This will increment the version number, which helps us keep track of upgraded code
- major: Increase the major version (e.g., 1.2.3 => 2.0.0)
- minor: Increase the minor version (e.g., 1.2.3 => 1.3.0)
- patch: Increase the patch version (e.g., 1.2.3 => 1.2.4)
You can edit pyproject.toml manually, too

Before

[project]  
name = "dec-vs-imp"  
version = "0.1.0"  
description = "Add your description here"  
readme = "README.md"  
requires-python = ">=3.12"  
dependencies = [  
   "flet[all]>=0.70.0.dev0",  
]

After

[project]  
name = "dropdown-snack"  
version = "0.1.1"  
description = "Chapter 9 code for the Flet dropdown and snackbar tutorial. Link to course: https://industry-python.thinkific.com/products/courses/industry-projects-with-python"  
readme = "README.md"  
requires-python = ">=3.13"  
dependencies = [  
   "flet[all]~=0.80",  
]

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