Merge pull request #73 from minhsueh/add_animation3

pin down pytest=7.4.4

Author: minhsueh

tests/requirements.txt

@@ -2,8 +2,13 @@
 # Switch into a virtual environment
 # pip install -r requirements.txt
 
+# ImportError: cannot import name 'call_runtest_hook' from '_pytest.runner'
+# internal pytest API (_pytest.runner.call_runtest_hook) that was removed in pytest 8
+# Pin down pytest
+pytest==7.4.4 
 dash[dev,testing]>=1.3.1
 chromedriver-binary==80.0.3987.106.0
 pytest-mock==3.2.0
 flaky==3.7.0
 pytest-sugar==0.9.4
+