improved finding ansys on linux

Author: akaszynski

pyansys/launcher.py

@@ -1,4 +1,6 @@
 """Module for launching MAPDL locally."""
+import pathlib
+from glob import glob
 import time
 import subprocess
 import re
@@ -58,6 +60,20 @@ def find_ansys():
                 if is_float(version_str):
                     paths[int(version_str)] = path
 
+    # On Linux ansys is usually installed at the root directory at
+    # /usr/ansys_inc
+    # /ansys_inc
+    if not paths and os.name == 'posix':
+        for directory in ['/usr/ansys_inc/', '/ansys_inc/']:
+            if os.path.isdir(directory):
+                # construct ansys path
+                for subdirectory in glob('%s*/' % directory):
+                    ver = os.path.basename(os.path.normpath('/usr/ansys_inc/v202/'))
+                    groups = re.findall(r'v\d\d\d', ver)
+                    if groups:
+                        ver = int(groups[0][1:])
+                        paths[ver] = os.path.join(subdirectory, 'ansys')
+
     if not paths:
         return '', ''
 

tests/test_launcher.py

@@ -29,6 +29,16 @@
     pytestmark = pytest.mark.skip("Requires MAPDL")
 
 
+@pytest.mark.skipif(os.name != 'posix', reason="Requires Linux")
+@pytest.mark.skipif(not versions, reason="Requires ANSYS install")
+def test_find_ansys_linux():
+    # assuming ansys is installed, should be able to find it on linux
+    # without env var
+    bin_file, ver = pyansys.launcher.find_ansys()
+    assert os.path.isfile(bin_file)
+    assert isinstance(ver, float)
+
+
 def test_invalid_mode():
     with pytest.raises(ValueError):
         exec_file = get_ansys_bin(valid_versions[0])