Python: Make sure packages have locations, so they can be displayed, even if those locations are meaningless.

python/ql/src/semmle/python/Files.qll

@@ -391,10 +391,14 @@ class Location extends @location {
 
     /** Gets the file for this location */
     File getFile() {
+        result = this.getPath()
+    }
+
+    private Container getPath() {
         locations_default(this, result, _, _, _, _)
         or
         exists(Module m | locations_ast(this, m, _, _, _, _) |
-            result = m.getFile()
+            result = m.getPath()
         )
     }
 
@@ -423,7 +427,7 @@ class Location extends @location {
     }
 
     string toString() {
-        result = this.getFile().getName() + ":" + this.getStartLine().toString()
+        result = this.getPath().getName() + ":" + this.getStartLine().toString()
     }
 
     predicate hasLocationInfo(string filepath, int bl, int bc, int el, int ec) {

python/ql/src/semmle/python/Module.qll

@@ -115,6 +115,9 @@ class Module extends Module_, Scope, AstNode {
 
     override Location getLocation() {
         py_scope_location(result, this)
+        or
+        not py_scope_location(_, this) and
+        locations_ast(result, this, 0, 0, 0, 0)
     }
 
     /** Gets a child module or package of this package */

python/ql/test/query-tests/analysis/Sanity/package/__init__.py

@@ -0,0 +1 @@
+

python/ql/test/query-tests/analysis/Sanity/test.py

@@ -21,16 +21,18 @@ class DerivedClass(BaseClass):
         self.inst_attr
         self.shadowing
 
-#ODASA-3836
+
 def comprehensions_and_generators(seq):
     [y*y for y in seq]
     (y*y for y in seq)
     {y*y for y in seq}
     {y:y*y for y in seq}
 
-#ODASA-5391
+
 @decorator(x)
 class Decorated(object):
     pass
 
 d = Decorated()
+
+import package