PY-13993 "settings.py" can't be found if website name differs from project folder name

(TODO: Add tests)

platform/lang-api/src/com/intellij/psi/util/PsiUtilBase.java

@@ -26,6 +26,7 @@ import com.intellij.openapi.diagnostic.Logger;
 import com.intellij.openapi.editor.Caret;
 import com.intellij.openapi.editor.Document;
 import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.fileEditor.FileDocumentManager;
 import com.intellij.openapi.fileEditor.FileEditor;
 import com.intellij.openapi.fileEditor.FileEditorManager;
 import com.intellij.openapi.fileEditor.TextEditor;
@@ -278,6 +279,22 @@ public class PsiUtilBase extends PsiUtilCore implements PsiEditorUtil {
     return virtualFile != null && virtualFile.is(VFileProperty.SYMLINK);
   }
 
+  /**
+   * Get PSI file from virtual file
+   * @param virtualFile virtual file
+   * @param project project where conversion takes place
+   * @return psi file or null if failed to load
+   */
+  @Nullable
+  public static PsiFile asPsiFile(@NotNull final VirtualFile virtualFile,
+                                      @NotNull final Project project) {
+    final Document document = FileDocumentManager.getInstance().getDocument(virtualFile);
+    if (document == null) {
+      return null;
+    }
+    return PsiDocumentManager.getInstance(project).getPsiFile(document);
+  }
+
   @Nullable
   public static VirtualFile asVirtualFile(@Nullable PsiElement element) {
     if (element instanceof PsiFileSystemItem) {

python/psi-api/src/com/jetbrains/python/PythonFunctionParameters.java

@@ -0,0 +1,41 @@
+package com.jetbrains.python;
+
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Python function arguments
+ *
+ * @author Ilya.Kazakevich
+ */
+public enum PythonFunctionParameters implements FunctionParameter {
+  /**
+   * environment.setdevault(key, failobj) # key
+   */
+  ENV_SET_DEFAULT_KEY("key", 0),
+
+  /**
+   * environment.setdevault(key, failobj) # failobj
+   */
+  ENV_SET_DEFAULT_FAILOBJ("failobj",1);
+
+
+  @Nullable
+  private final String myName;
+  private final int myPosition;
+
+  PythonFunctionParameters(@Nullable String name, final int position) {
+    myName = name;
+    myPosition = position;
+  }
+
+  @Override
+  public int getPosition() {
+    return myPosition;
+  }
+
+  @Nullable
+  @Override
+  public String getName() {
+    return myName;
+  }
+}