Fix #283: don't print first arg of constructor
This changes the exception error message of a bad-arguments error to
suppress the constructor argument when the failure is a constructor.
This changes both the "Invoked with: " output to omit the object
instances, and rewrites the constructor signature to make it look
like a constructor (changing the first argument to the object name, and
removing the ' -> NoneType' return type.
diff --git a/example/issues.py b/example/issues.py
index 257f08e..716a1b2 100644
--- a/example/issues.py
+++ b/example/issues.py
@@ -10,6 +10,7 @@
from example.issues import ElementList, ElementA, print_element
from example.issues import expect_float, expect_int
from example.issues import A, call_f
+from example.issues import StrIssue
import gc
print_cchar("const char *")
@@ -72,3 +73,8 @@
b = B()
call_f(b)
+print(StrIssue(3))
+try:
+ print(StrIssue("no", "such", "constructor"))
+except TypeError as e:
+ print("Failed as expected: " + str(e))