move init expr functions into a single file

1 files changed, 14 insertions, 0 deletions

diff --git a/polymatrix/utils/tooperatorexception.py b/polymatrix/utils/tooperatorexception.py
new file mode 100644
index 0000000..5f7db0f
--- /dev/null
+++ b/polymatrix/utils/tooperatorexception.py
@@ -0,0 +1,14 @@
+from polymatrix.utils.getstacklines import FrameSummary
+
+
+def to_operator_exception(
+        message: str,
+        stack: tuple[FrameSummary],
+) -> str:
+    exception_lines = [
+        message,
+        f'  Assertion traceback (most recent call last):',
+        *(f'    File "{stack_line.filename}", line {stack_line.lineno}\n      {stack_line.line}' for stack_line in stack),
+    ]
+
+    return '\n'.join(exception_lines)