Fixing a minor bug #442

	# This workflow is setup by Fei Zhang to use Github Actions 202-09-14

	name: hiperseis_main_ci

	on: [push]

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: [3.6, 3.7, 3.8]

	steps:
	- uses: actions/checkout@v2
	- name: Set up Python ${{ matrix.python-version }}
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	git submodule update --init --recursive
	sudo apt-get install libhdf5-dev
	sudo apt-get install libmpich-dev
	sudo apt-get install libproj-dev proj-bin
	sudo apt-get install libgeos-dev
	sudo apt-get install libnetcdf-dev

	python -m pip install --upgrade pip

	pip install numpy
	pip install Cython --install-option="--no-cython-compile"
	pip install flake8 pytest
	pip install pytest-cov
	pip install coveralls
	pip install pip-tools
	pip-compile --upgrade

	if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
	pip install -r tests/requirements.txt
	pip list
	# - name: Lint with flake8
	# run: \|
	# # stop the build if there are Python syntax errors or undefined names
	# flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
	# # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
	# flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
	- name: Running pytest
	run: \|
	python -m pytest ./tests

Provide feedback