Fix flake8 E111 and E306 #76

	name: Example plots

	on: [push]

	jobs:
	plot:

	runs-on: ${{ matrix.os }}
	strategy:
	max-parallel: 8
	matrix:
	python-version: [3.7, 3.8, 3.9, '3.10', 3.11, 3.12]
	os: [macos-13, windows-latest, ubuntu-latest]
	include:
	- pytorch-version: 1.4.0
	- pytorch-version: 1.8.0
	python-version: 3.9
	- pytorch-version: 1.11.0
	python-version: '3.10'
	- pytorch-version: 2.0.0
	python-version: 3.11
	- pytorch-version: 2.2.0
	python-version: 3.12
	- pytorch-option: '+cpu'
	- pytorch-option: ''
	os: macos-13

	steps:
	- uses: actions/checkout@v4
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python -m pip install --upgrade pip
	pip install numpy -U
	pip install torch==${{ matrix.pytorch-version }}${{ matrix.pytorch-option }} -f https://download.pytorch.org/whl/torch_stable.html
	pip install matplotlib
	pip install setuptools
	- name: Install package
	run: python -m pip install .
	- name: Preparation
	run: mkdir artifact
	- name: Plot warmup period
	run: \|
	cd artifact
	python ../examples/plots/effective_warmup_period.py --output png
	- name: Plot warmup schedule
	run: \|
	cd artifact
	python ../examples/plots/warmup_schedule.py --output png
	- uses: actions/upload-artifact@v4
	with:
	name: artifact_${{ matrix.os }}_${{ matrix.python-version }}
	path: artifact

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