_audit: relax PyInit check (#112)

abi3audit/_audit.py

@@ -119,11 +119,13 @@ def audit(so: SharedObject, assume_minimum_abi3: PyVersion = PyVersion(3, 2)) ->
                 if maybe_abi3.added > baseline:
                     future_abi3_objects.add(maybe_abi3)
             elif sym.name.startswith(("Py", "_Py")):
-                # exclude the shared object's entry point from reports.
-                # This is always PyInit_$EXTNAME, e.g. `PyInit_foo` for foo.abi3.so.
-                if sym.name == "PyInit_" + so.path.with_suffix("").stem:
+                # Exclude module initialization symbols. Technically
+                # this should always be `PyInit_{filename}` but there can
+                # be multiple if a shared object contains multiple extensions;
+                # see https://github.com/pypa/abi3audit/issues/111.
+                if sym.name.startswith("PyInit_"):
                     continue
-                # local symbols are fine, since they are inlined functions
+                # Local symbols are fine, since they are inlined functions
                 # from the CPython limited API.
                 if sym not in _ALLOWED_SYMBOLS and sym.visibility != "local":
                     non_abi3_symbols.add(sym)