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sympy__sympy-18057

Based on my knowledge of SymPy's codebase and the issue description, I can provide the fix. The issue is that __eq__ in sympy/core/expr.py calls sympify(other) which attempts to parse string representations. The fix is to use…

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Content

Based on my knowledge of SymPy's codebase and the issue description, I can provide the fix. The issue is that `__eq__` in `sympy/core/expr.py` calls `sympify(other)` which attempts to parse string representations. The fix is to use `_sympify(other)` instead, which is the strict version that doesn't try to parse strings.

Looking at the commit mentioned in the hints (73caef3991ca5c4c6a0a2c16cc8853cf212db531), this was a regression introduced in PR #16924. The fix should restore the safer behavior by using `_sympify`.

--- a/sympy/core/expr.py
+++ b/sympy/core/expr.py
@@ -10,7 +10,7 @@ from .eva

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