Changes between Version 40 and Version 41 of DeveloperGuidelines/Py_2_3

Timestamp:

07/04/19 19:08:36 (6 years ago)

Author:

Dominic König

Comment:

--

DeveloperGuidelines/Py_2_3

@@ -62 +62 @@
 
 NB the Python-2.7 {{{exec}}} statement also accepts a 3-tuple as parameter {{{exec(expr, globals, locals)}}} which syntax is equivalent to the exec-function in Python-3.
+
+=== No cmp-parameter in sorted ===
+
+Python-3 does no longer support the {{{cmp}}} parameter for {{{x.sort()}}} and {{{sorted(x)}}}. We use the {{{key}}} parameter instead.
+
+For locale-sensitive sorting, use the s3compat alternative {{{sorted_locale}}}:
+{{{#!python
+# Python-2 pattern, not working in Python-3:
+x = sorted(x, cmp=locale.strcoll)
+# Python-3 pattern, not working with unicode in Python-2:
+x = sorted(x, key=locale.strxfrm)
+# Compatible pattern:
+from s3compat import sorted_locale
+x = sorted_locale(x)
+}}}
 == Usage ==