Update app.py

app.py

@@ -21,12 +21,20 @@ encoder = handtool.create_encoder(config)
 machineCode = encoder.getMachineCode()
 print("\nmachineCode: ", machineCode.decode('utf-8'))
 
-try:
-    with open(licensePath, 'r') as file:
-        license = file.read()
-except IOError as exc:
-    print("failed to open license.txt: ", exc.errno)
-print("\nlicense: ", license)
+# Get a specific environment variable by name
+license = os.environ.get("LICENSE")
+
+# Check if the variable exists
+if license is not None:
+    print("Value of LICENSE:")
+else:
+    license = ""
+    try:
+        with open(licensePath, 'r') as file:
+            license = file.read().strip()
+    except IOError as exc:
+        print("failed to open license.txt: ", exc.errno)
+    print("license: ", license)
 
 ret = encoder.setActivation(license.encode('utf-8'))
 print("\nactivation: ", ret)