fix: fix error message of evaluate helper function (snakemake#3282)

johanneskoester · web-flow · commit 9483a642e044 · 2025-02-05T11:32:10.000+01:00
&lt;!--Add a description of your PR here--&gt;

### QC
&lt;!-- Make sure that you can tick the boxes below. --&gt;

* [x] The PR contains a test case for the changes or the changes are
already covered by an existing test case.
* [x] The documentation (`docs/`) is updated to reflect the changes or
this is not necessary (e.g. if the change does neither modify the
language nor the behavior or functionalities of Snakemake).


&lt;!-- This is an auto-generated comment: release notes by coderabbit.ai
--&gt;

## Summary by CodeRabbit

- **New Features**
- Exposed evaluation functionality for processing Python expressions
with wildcard parameters.
  
- **Bug Fixes**
- Enhanced error reporting with more structured and clear diagnostic
messages for easier troubleshooting.

&lt;!-- end of auto-generated comment: release notes by coderabbit.ai --&gt;
diff --git a/snakemake/ioutils/evaluate.py b/snakemake/ioutils/evaluate.py
@@ -1,3 +1,4 @@
+from snakemake.logging import format_dict
 from snakemake_interface_common.exceptions import WorkflowError
 
 
@@ -11,7 +12,7 @@ def inner(wildcards):
             return eval(formatted, globals())
         except Exception as e:
             raise WorkflowError(
-                f"Failed to evaluate expression {expr} with wildcards {wildcards}. "
+                f"Failed to evaluate expression {expr} with wildcards {format_dict(wildcards)}. "
                 f"Formatted expression: {formatted}",
                 e,
             )
