Use xlsx instead of xls due to Pandas deprecating xls

.gitignore

@@ -16,5 +16,6 @@ Rhodium.egg-info/
 *.o
 *.pyc
 *.so
+*.xlsx
 .Rhistory
 .DS_Store

examples/Eijgenraam/eijgenraam_mordm.py

@@ -236,8 +236,8 @@ def find_height(t):
 ##==============================================================================
 ## Export the data (Excel, CSV, JSON, pickle)
 ##------------------------------------------------------------------------------
-if promptToRun("Save policies to Excel (eijgenraam_mordm.xls)?"):
-    policies.save("eijgenraam_mordm.xls")
+if promptToRun("Save policies to Excel (eijgenraam_mordm.xlsx)?"):
+    policies.save("eijgenraam_mordm.xlsx")
 
 ##==============================================================================
 ## Display all the data in a pretty format

rhodium/utils.py

@@ -19,19 +19,20 @@
 import sys
 
 def promptToRun(message, default="yes"):
-    if os.getenv("RHODIUM_NO_PROMPT"):
-        response = ""
+    if default == "yes":
+        prompt = "[Y/n]"
+    elif default == "no":
+        prompt = "[y/N]"
     else:
-        if default == "yes":
-            prompt = "[Y/n]"
-        elif default == "no":
-            prompt = "[y/N]"
-        else:
-            raise ValueError("invalid default answer")
+        raise ValueError("invalid default answer")
 
-        print(message + " " + prompt + " ", end='')
-        sys.stdout.flush()
+    print(message + " " + prompt + " ", end='')
+    sys.stdout.flush()
 
+    if os.getenv("RHODIUM_NO_PROMPT"):
+        print("(Skipping prompt since RHODIUM_NO_PROMPT is set)")
+        response = ""
+    else:
         response = sys.stdin.readline().strip()
 
     if response == "":