fix: Python generation for type casts (#1000)

### Summary of Changes

Previously, the Python generator threw an error, since type casts were
not handled. Now, they are handled properly.

.mega-linter.yml

@@ -21,4 +21,4 @@ TSX_ESLINT_FILE_EXTENSIONS:
 
 # Commands
 PRE_COMMANDS:
-  - command: npm i @lars-reimann/eslint-config-svelte eslint-plugin-vitest @lars-reimann/prettier-config-svelte
+  - command: npm i @lars-reimann/eslint-config-svelte eslint-plugin-vitest@0.4.0 @lars-reimann/prettier-config-svelte

packages/safe-ds-lang/src/language/generation/safe-ds-python-generator.ts

@@ -47,6 +47,7 @@ import {
     isSdsTemplateStringInner,
     isSdsTemplateStringPart,
     isSdsTemplateStringStart,
+    isSdsTypeCast,
     isSdsWildcard,
     isSdsYield,
     SdsArgument,
@@ -907,6 +908,8 @@ export class SafeDsPythonGenerator {
             const referenceImport = this.createImportDataForReference(expression);
             frame.addImport(referenceImport);
             return traceToNode(expression)(referenceImport?.alias ?? this.getPythonNameOrDefault(declaration));
+        } else if (isSdsTypeCast(expression)) {
+            return traceToNode(expression)(this.generateExpression(expression.expression, frame));
         }
         /* c8 ignore next 2 */
         throw new Error(`Unknown expression type: ${expression.$type}`);

packages/safe-ds-lang/tests/resources/generation/python/expressions/type casts/generated/tests/generation/expressions/typeCasts/gen_input.py

@@ -0,0 +1,4 @@
+# Segments ---------------------------------------------------------------------
+
+def mySegment(p):
+    a = p

packages/safe-ds-lang/tests/resources/generation/python/expressions/type casts/input.sdstest

@@ -0,0 +1,5 @@
+package tests.generation.expressions.typeCasts
+
+segment mySegment(p: Int) {
+    val a = p as Int;
+}