diff --git a/idna/core.py b/idna/core.py
index afe942c..0678bd4 100644
--- a/idna/core.py
+++ b/idna/core.py
@@ -9,8 +9,46 @@
 _virama_combining_class = 9
 _alabel_prefix = b"xn--"
 _unicode_dots_re = re.compile("[\u002e\u3002\uff0e\uff61]")
-_ldh = (48,49,50,51,52,53,54,55,56,57,95,97,98,99,100,101,102,103,104,105,106,107,108,109,110,
-        111,112,113,114,115,116,117,118,119,120,121,122)
+_ldh = (
+    48,
+    49,
+    50,
+    51,
+    52,
+    53,
+    54,
+    55,
+    56,
+    57,
+    95,
+    97,
+    98,
+    99,
+    100,
+    101,
+    102,
+    103,
+    104,
+    105,
+    106,
+    107,
+    108,
+    109,
+    110,
+    111,
+    112,
+    113,
+    114,
+    115,
+    116,
+    117,
+    118,
+    119,
+    120,
+    121,
+    122,
+)
+
 
 class IDNAError(UnicodeError):
     """Base exception for all IDNA-encoding related problems"""
@@ -342,19 +380,16 @@ def uts46_remap(domain: str, std3_rules: bool = True, transitional: bool = False
             uts46row = uts46data[code_point if code_point < 256 else bisect.bisect_left(uts46data, (code_point, "Z")) - 1]
             status = uts46row[1]
             replacement: Optional[str] = None
-            if std3_rules and code_point <= 0x7f:
+            if std3_rules and code_point <= 0x7F:
                 if not code_point in _ldh:
-                    raise InvalidCodepoint("Codepoint {} at position {} does not follow STD3 rules".format(_unot(code_point), pos + 1))
+                    raise InvalidCodepoint(
+                        "Codepoint {} at position {} does not follow STD3 rules".format(_unot(code_point), pos + 1)
+                    )
             if len(uts46row) == 3:
                 replacement = uts46row[2]
-            if (
-                status == "V"
-                or (status == "D" and not transitional)
-            ):
+            if status == "V" or (status == "D" and not transitional):
                 output += char
-            elif replacement is not None and (
-                status == "M" or (status == "D" and transitional)
-            ):
+            elif replacement is not None and (status == "M" or (status == "D" and transitional)):
                 output += replacement
             elif status != "I":
                 raise IndexError()