add all remaining explicit this

python/ql/lib/semmle/python/security/performance/ReDoSUtil.qll

@@ -140,9 +140,9 @@ class RegExpRoot extends RegExpTerm {
     // there is at least one repetition
     getRoot(any(InfiniteRepetitionQuantifier q)) = this and
     // is actually used as a RegExp
-    isUsedAsRegExp() and
+    this.isUsedAsRegExp() and
     // not excluded for library specific reasons
-    not isExcluded(getRootTerm().getParent())
+    not isExcluded(this.getRootTerm().getParent())
   }
 }
 
@@ -302,7 +302,7 @@ abstract class CharacterClass extends InputSymbol {
   /**
    * Gets a character matched by this character class.
    */
-  string choose() { result = getARelevantChar() and matches(result) }
+  string choose() { result = this.getARelevantChar() and this.matches(result) }
 }
 
 /**

python/ql/lib/semmle/python/security/strings/External.qll

@@ -281,19 +281,19 @@ class UrlsplitUrlparseTempSanitizer extends Sanitizer {
       or
       full_use.(AttrNode).getObject() = test.getInput().getAUse()
     |
-      clears_taint(full_use, test.getTest(), test.getSense())
+      this.clears_taint(full_use, test.getTest(), test.getSense())
     )
   }
 
   private predicate clears_taint(ControlFlowNode tainted, ControlFlowNode test, boolean sense) {
-    test_equality_with_const(test, tainted, sense)
+    this.test_equality_with_const(test, tainted, sense)
     or
-    test_in_const_seq(test, tainted, sense)
+    this.test_in_const_seq(test, tainted, sense)
     or
     test.(UnaryExprNode).getNode().getOp() instanceof Not and
     exists(ControlFlowNode nested_test |
       nested_test = test.(UnaryExprNode).getOperand() and
-      clears_taint(tainted, nested_test, sense.booleanNot())
+      this.clears_taint(tainted, nested_test, sense.booleanNot())
     )
   }