3.7 test_fstring now works.

test/stdlib/3.7-exclude.sh

@@ -45,7 +45,6 @@ SKIP_TESTS=(
     [test_float.py]=1
     [test_format.py]=1
     [test_frame.py]=1
-    [test_fstring.py]=1 # Investigate
     [test_ftplib.py]=1
     [test_functools.py]=1
     [test_gdb.py]=1 # it fails on its own

uncompyle6/semantics/customize36.py

@@ -516,7 +516,7 @@ def customize_for_version36(self, version):
         for expr in node[:-1]:
             assert expr == "expr"
             value = self.traverse(expr, indent="")
-            if expr[0].kind.startswith('formatted_value'):
+            if expr[0].kind.startswith("formatted_value"):
                 # remove leading 'f'
                 if value.startswith("f"):
                     value = value[1:]