trying to make selenium work on pythonanywhere

ChemID.py

@@ -19,7 +19,18 @@ if try_dsstox:
     import selenium.webdriver
     from selenium.webdriver.chrome.options import Options
     from selenium.webdriver.chrome.service import Service
-    import chromedriver_binary
+    ## TODO this does not seem very robust
+    uname = os.uname()
+    if uname.sysname == 'Darwin':
+        # my mac
+        import chromedriver_binary
+        driver_exe = chromedriver_binary.chromedriver_filename
+    elif uname.sysname == 'Linux':
+        # pythonanywhere
+        driver_exe = '/usr/local/bin/chromedriver'
+    else:
+        import chromedriver_binary
+        driver_exe = chromedriver_binary.chromedriver_filename
 
 from io import BytesIO
 from PIL import ImageOps
@@ -575,7 +586,6 @@ def string2density(name):
                 url = f'https://comptox.epa.gov/dashboard/chemical/properties/{dtxsid}'
                 #print(url)
                 try:
-                    driver_exe = chromedriver_binary.chromedriver_filename
                     options = Options()
                     options.add_argument("--headless") # runs in background instead of showing browser window
                     service = Service(driver_exe)