fixed pr suggestions

python/ql/src/experimental/Classes/NamingConventionsClasses.qhelp

@@ -22,7 +22,7 @@ Write the class name beginning with an uppercase letter. For example, <code>clas
 
 <li>
   Guido van Rossum, Barry Warsaw, Nick Coghlan <em>PEP 8 -- Style Guide for Python Code<em>
-  <a href="https://www.python.org/dev/peps/pep-0008/#class-names"</a>
+  <a href="https://www.python.org/dev/peps/pep-0008/#class-names">Python Class Names</a>
 </li>
 
 </references>

python/ql/src/experimental/Classes/NamingConventionsClasses.ql

@@ -3,15 +3,21 @@
  * @description A class name that begins with a lowercase letter decreases readability.
  * @kind problem
  * @problem.severity recommendation
- * @precision medium
- * @id python/misnamed-type
+ * @id py/misnamed-class
  * @tags maintainability
  */
 
 import python
 
-from Class c
+from Class c, string first_char
 where
   c.inSource() and
-  not c.getName().substring(0, 1).toUpperCase() = c.getName().substring(0, 1)
+  first_char = c.getName().prefix(1) and
+  not first_char = first_char.toUpperCase() and
+  not exists(Class c1, string first_char1 |
+    c1 != c and
+    c1.getLocation().getFile() = c.getLocation().getFile() and
+    first_char1 = c1.getName().prefix(1) and
+    not first_char1 = first_char1.toUpperCase()
+  )
 select c, "Class names should start in uppercase."

python/ql/src/experimental/Functions/NamingConventionsFunctions.qhelp

@@ -22,7 +22,7 @@ Write the function name beginning with an lowercase letter. For example, <code>j
 
 <li>
   Guido van Rossum, Barry Warsaw, Nick Coghlan <em>PEP 8 -- Style Guide for Python Code<em>
-  <a href="https://www.python.org/dev/peps/pep-0008/#function-and-variable-names"</a>
+  <a href="https://www.python.org/dev/peps/pep-0008/#function-and-variable-names">Python Function and Variable Names</a>
 </li>
 
 </references>

python/ql/src/experimental/Functions/NamingConventionsFunctions.ql

@@ -3,15 +3,21 @@
  * @description A function name that begins with an uppercase letter decreases readability.
  * @kind problem
  * @problem.severity recommendation
- * @precision medium
- * @id python/misnamed-function
+ * @id py/misnamed-function
  * @tags maintainability
  */
 
 import python
 
-from Function f
+from Function f, string first_char
 where
   f.inSource() and
-  not f.getName().substring(0, 1).toLowerCase() = f.getName().substring(0, 1)
+  first_char = f.getName().prefix(1) and
+  not first_char = first_char.toLowerCase() and
+  not exists(Function f1, string first_char1 |
+    f1 != f and
+    f1.getLocation().getFile() = f.getLocation().getFile() and
+    first_char1 = f1.getName().prefix(1) and
+    not first_char1 = first_char1.toLowerCase()
+  )
 select f, "Function names should start in lowercase."