fix f-string syntax error in code generation

CHANGES.rst

@@ -14,6 +14,8 @@ Unreleased
     ``Template.generate_async``. :pr:`1960`
 -   Avoid leaving async generators unclosed in blocks, includes and extends.
     :pr:`1960`
+-   Fix f-string syntax error in code generation when importing a macro in a
+    template whose name contains curly braces. :issue:`1792`
 
 
 Version 3.1.4

src/jinja2/compiler.py

@@ -1142,12 +1142,12 @@ def visit_FromImport(self, node: nodes.FromImport, frame: Frame) -> None:
             self.writeline(f"if {frame.symbols.ref(alias)} is missing:")
             self.indent()
             message = (
-                "the template {included_template.__name__!r}"
-                f" (imported on {self.position(node)})"
-                f" does not export the requested name {name!r}"
+                'f"the template {included_template.__name__!r}" + '
+                f'"(imported on {self.position(node)})" + '
+                f'"does not export the requested name {name!r}"'
             )
             self.writeline(
-                f"{frame.symbols.ref(alias)} = undefined(f{message!r}, name={name!r})"
+                f"{frame.symbols.ref(alias)} = undefined({message}, name={name!r})"
             )
             self.outdent()
             if frame.toplevel:

tests/test_compile.py

@@ -26,3 +26,15 @@ def test_import_as_with_context_deterministic(tmp_path):
     expect = [f"'bar{i}': " for i in range(10)]
     found = re.findall(r"'bar\d': ", content)[:10]
     assert found == expect
+
+
+def test_import_as_with_curly_braces_in_template_name():
+    env = Environment(
+        loader=DictLoader(
+            {
+                "template_with_{}": "{% import 'macro' as m %}",
+                "macro": "{% macro m() %}{% endmacro %}",
+            }
+        )
+    )
+    env.get_template("template_with_{}")