Do unicode fstrings work on Windows?

Author: rocky

mathics/builtin/drawing/plot.py

@@ -2196,13 +2196,13 @@ def eval_f(self, f, x_value):
 
 
 class PolarPlot(_Plot):
-    """
+    u"""
     <dl>
       <dt>'PolarPlot[$r$, {$\u03B8$, $\u03B8_min$, $\u03B8_max$}]'
       <dd>creates a polar plot of curve with radious $r$ as a function of angle $\u03B8$ ranging from $\u03B8_min$ to $\u03B8_max$.
     </dl>
 
-    >> PolarPlot[Cos[5\[Theta]], {\[Theta], 0, Pi}]
+    >> PolarPlot[Cos[5\\[Theta]], {\\[Theta], 0, Pi}]
      = -Graphics-
 
     >> PolarPlot[{1, 1 + Sin[20 \u03B8] / 5}, {\u03B8, 0, 2 Pi}]

mathics/docpipeline.py

@@ -85,15 +85,17 @@ def test_case(test, tests, index=0, subindex=0, quiet=False, section=None):
     def fail(why):
         part, chapter, section = tests.part, tests.chapter, tests.section
         print_and_log(
-            "%sTest failed: %s in %s / %s\n%s\n%s\n"
-            % (sep, section, part, chapter, test, why)
+            f"""{sep}Test failed: {section} in {part} / {chapter}
+{part}
+n{why}
+"""
         )
         return False
 
     if not quiet:
         if section:
-            print("%s %s / %s %s" % (stars, tests.chapter, section, stars))
-        print("%4d (%2d): TEST %s" % (index, subindex, test))
+            print(f"{stars} {tests.chapter} / {section} {stars}")
+        print(f"{index:4d} ({subindex:2d}): TEST {test}")
 
     feeder = MathicsSingleLineFeeder(test, "<test>")
     evaluation = Evaluation(definitions, catch_interrupt=False, output=TestOutput())