Doctests for pyparsing.exceptions

Author: ferdnyc

pyparsing/exceptions.py

@@ -239,7 +239,9 @@ def explain(self, depth: int = 16) -> str:
         Returns a multi-line string listing the ParserElements and/or function names in the
         exception's stack trace.
 
-        Example::
+        Example:
+
+        .. testcode::
 
             # an expression to parse 3 integers
             expr = pp.Word(pp.nums) * 3
@@ -249,11 +251,13 @@ def explain(self, depth: int = 16) -> str:
             except pp.ParseException as pe:
                 print(pe.explain(depth=0))
 
-        prints::
+        prints:
+
+        .. testoutput::
 
             123 456 A789
                     ^
-            ParseException: Expected W:(0-9), found 'A'  (at char 8), (line:1, col:9)
+            ParseException: Expected W:(0-9), found 'A789'  (at char 8), (line:1, col:9)
 
         Note: the diagnostic output will include string representations of the expressions
         that failed to parse. These representations will be more helpful if you use `set_name` to
@@ -276,15 +280,19 @@ class ParseException(ParseBaseException):
     """
     Exception thrown when a parse expression doesn't match the input string
 
-    Example::
+    Example:
+
+    .. testcode::
 
         integer = Word(nums).set_name("integer")
         try:
             integer.parse_string("ABC")
         except ParseException as pe:
             print(pe, f"column: {pe.column}")
 
-    prints::
+    prints:
+
+    .. testoutput::
 
        Expected integer, found 'ABC'  (at char 0), (line:1, col:1) column: 1