Changes between Version 58 and Version 59 of DeveloperGuidelines/Py_2_3

Timestamp:

07/05/19 23:14:07 (6 years ago)

Author:

Dominic König

Comment:

--

DeveloperGuidelines/Py_2_3

@@ -49 +49 @@
     ...
 }}}
+
+=== Raise Exceptions Instances ===
+
+Python-3 does no longer support the {{{raise E, V, T}}} syntax - the new syntax is {{{raise E(V).with_traceback(T)}}}. 
+
+However, the traceback is rarely required - and where E is an Exception class (rather than a string), we can use the {{{raise E(V)}}} syntax which works in all Python versions.
+
+{{{#!python
+# Works in Py2, but not in Py3:
+raise SyntaxError, "Error Message"
+
+# Works in all Python versions, hence our Standard:
+raise SyntaxError("Error Message")
+}}}
+
+If a traceback object must be passed (which is rarely needed), then we must use the PY2 constant to implement alternative statements.
 
 === No exec statements ===
@@ -80 +96 @@
 }}}
 
-=== Raise Exceptions Instances ===
-
-Python-3 does no longer support the {{{raise E, V, T}}} syntax - the new syntax is {{{raise E(V).with_traceback(T)}}}. 
-
-However, the traceback is rarely required - and where E is an Exception class (rather than a string), we can use the {{{raise E(V)}}} syntax which works in all Python versions.
-
-{{{#!python
-# Works in Py2, but not in Py3:
-raise SyntaxError, "Error Message"
-
-# Works in all Python versions, hence our Standard:
-raise SyntaxError("Error Message")
-}}}
-
-If a traceback object must be passed (which is rarely needed), then we must use the PY2 constant to implement alternative statements.
 == Usage ==