From 9130659f714143beffcc0d17e2b919b18c5fa76e Mon Sep 17 00:00:00 2001
From: Andrej730 <azhilenkov@gmail.com>
Date: Fri, 18 Oct 2024 12:11:11 +0500
Subject: [PATCH] ifcopenshell.open - readable error if file doesn't exist

Previously it would show obscure error like:

RuntimeError: Type held at index 0 is class Blank and not class std::vector<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::allocator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > >
---
 src/ifcopenshell-python/ifcopenshell/__init__.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ifcopenshell-python/ifcopenshell/__init__.py b/src/ifcopenshell-python/ifcopenshell/__init__.py
index 99b5b737cd..110a38c85b 100644
--- a/src/ifcopenshell-python/ifcopenshell/__init__.py
+++ b/src/ifcopenshell-python/ifcopenshell/__init__.py
@@ -156,6 +156,8 @@ def open(
         print(products[0] == model[122] == model["2XQ$n5SLP5MBLyL442paFx"]) # True
     """
     path = Path(path)
+    if not path.exists():
+        raise FileNotFoundError(f"File does not exist: '{path}'.")
     if format is None:
         format = guess_format(path)
     if format == ".ifcXML":