This patch adds a new builtin unistr() which behaves like str()

except that it always returns Unicode objects.

A new C API PyObject_Unicode() is also provided.

This closes patch #101664.

Written by Marc-Andre Lemburg. Copyright assigned to Guido van Rossum.

2 files changed, 12 insertions, 0 deletions

diff --git a/Lib/test/output/test_builtin b/Lib/test/output/test_builtin
index 1c3b69c..29c6f86 100644
--- a/Lib/test/output/test_builtin
+++ b/Lib/test/output/test_builtin
@@ -45,6 +45,7 @@ repr
 round
 setattr
 str
+unistr
 tuple
 type
 vars
diff --git a/Lib/test/test_b2.py b/Lib/test/test_b2.py
index 5546d8a..9871652 100644
--- a/Lib/test/test_b2.py
+++ b/Lib/test/test_b2.py
@@ -214,6 +214,17 @@ if str(()) != '()': raise TestFailed, 'str(())'
 if str([]) != '[]': raise TestFailed, 'str([])'
 if str({}) != '{}': raise TestFailed, 'str({})'
 
+print 'unistr'
+if unistr('') <> u'': raise TestFailed, 'unistr(\'\')'
+if unistr('a') <> u'a': raise TestFailed, 'unistr(\'a\')'
+if unistr(u'') <> u'': raise TestFailed, 'unistr(u\'\')'
+if unistr(u'a') <> u'a': raise TestFailed, 'unistr(u\'a\')'
+if unistr(0) <> u'0': raise TestFailed, 'unistr(0)'
+if unistr(0L) <> u'0': raise TestFailed, 'unistr(0L)'
+if unistr(()) <> u'()': raise TestFailed, 'unistr(())'
+if unistr([]) <> u'[]': raise TestFailed, 'unistr([])'
+if unistr({}) <> u'{}': raise TestFailed, 'unistr({})'
+
 print 'tuple'
 if tuple(()) != (): raise TestFailed, 'tuple(())'
 if tuple((0, 1, 2, 3)) != (0, 1, 2, 3): raise TestFailed, 'tuple((0, 1, 2, 3))'