py/objstr: Fix handling of OP_MODULO with namedtuple.

This fix handles attrtuple as well, eg. os.uname().  A test case has been
added in basics/attrtuple2.py.

Fixes issue #16969.

Signed-off-by: Yoctopuce dev <dev@yoctopuce.com>

tests/basics/attrtuple2.py

@@ -0,0 +1,25 @@
+# test os.uname() attrtuple, if available
+try:
+    import os
+except ImportError:
+    print("SKIP")
+    raise SystemExit
+
+try:
+    u = os.uname()
+except AttributeError:
+    print("SKIP")
+    raise SystemExit
+
+# test printing of attrtuple
+print(str(u).find("machine=") > 0)
+
+# test read attr
+print(isinstance(u.machine, str))
+
+# test str modulo operator for attrtuple
+impl_str = ("%s " * len(u)) % u
+test_str = ""
+for val in u:
+    test_str += val + " "
+print(impl_str == test_str)

tests/basics/namedtuple1.py

@@ -21,6 +21,9 @@ for t in T(1, 2), T(bar=1, foo=2):
 
     print(isinstance(t, tuple))
 
+    # a NamedTuple can be used as a tuple
+    print("(%d, %d)" % t)
+
     # Check tuple can compare equal to namedtuple with same elements
     print(t == (t[0], t[1]), (t[0], t[1]) == t)