Fix issue #1980: opened_symbol option #505

	name: Mypy type hint checks

	on:
	pull_request:
	push:
	branches:
	- main

	jobs:
	run:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4

	- name: Setup Micromamba env
	uses: mamba-org/setup-micromamba@v1
	with:
	environment-name: TEST
	create-args: >-
	python=3
	--file requirements.txt
	--file requirements-dev.txt

	- name: Install folium from source
	shell: bash -l {0}
	run: \|
	python -m pip install -e . --no-deps --force-reinstall

	- name: Mypy test
	shell: bash -l {0}
	run: \|
	mypy folium

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