build: Ensure python3

Bail out when python2 is detected.

package-release.sh

@@ -44,7 +44,7 @@ while [ $# -gt 0 ]; do
 done
 
 function prepare {
-  python validate-methods.py \
+  python3 validate-methods.py \
     src/nvapi.cpp \
     src/nvapi_sys.cpp \
     src/nvapi_disp.cpp \

validate-methods.py

@@ -1,7 +1,11 @@
 import sys, re, getopt
 
+if sys.version_info[0] < 3:
+    print("Method validation failed due to invalid Python interpreter. Please use Python 3 as your default Python interpreter.")
+    sys.exit(1)
+
 if len(sys.argv) < 3:
-    print("Usage: python validate-methods.py <implementation1.cpp> [implementation2.cpp] <interface.cpp> <interface.h>")
+    print("Method validation failed due to invalid usage. Usage: python validate-methods.py <implementation1.cpp> [implementation2.cpp] <interface.cpp> <interface.h>")
     sys.exit(1)
 
 expectedMethods = []
@@ -36,11 +40,11 @@
             availableMethods.append(result.group(1))
 
 if len(expectedMethods) != len(foundMethods) or len(set(expectedMethods).intersection(foundMethods)) != len(expectedMethods):
-    print("Method validation failed. Please make sure that all implemented NVAPI methods are also listed in the `nvapi_QueryInterface` method.")
+    print("Method validation failed. Please make sure that all implemented NVAPI methods are also listed in the `nvapi_QueryInterface` function.")
     sys.exit(1)
 
 if not set(foundMethods).issubset(set(availableMethods)):
-    print("Method validation failed. Please make sure that all implemented NVAPI methods correspond to available methods in the `nvapi_interface_table` header method.")
+    print("Method validation failed. Please make sure that all implemented NVAPI methods correspond to available methods in the `nvapi_interface_table` struct.")
     sys.exit(1)
 
 sys.exit(0)