Function condition_to_rust 

pub fn condition_to_rust(
    expr: &ExprType,
    ctx: CodeGenContext,
    options: PythonOptions,
    symbols: SymbolTableScopes,
) -> Result<TokenStream, Box<dyn Error>>

Lower an expression in condition position (if/while/ternary/assert tests): Python implicitly calls bool() on it. Boolean operators recurse into their operands and not negates a condition; comparisons already yield bool; anything else is wrapped in stdpython’s Truthy::is_truthy, giving Python’s truth table (empty string/collection and zero are false).