diff --git a/scripts/add_attribute.py b/scripts/add_attribute.py
index b905ca2d..2fa01017 100644
--- a/scripts/add_attribute.py
+++ b/scripts/add_attribute.py
@@ -39,11 +39,35 @@ else:
 
 
 types = {
-    "string": ("string", None, "self._makeStringAttribute(attributes[\"" + attributeName + "\"])"),
-    "int": ("integer", None, "self._makeIntAttribute(attributes[\"" + attributeName + "\"])"),
-    "bool": ("bool", None, "self._makeBoolAttribute(attributes[\"" + attributeName + "\"])"),
-    "datetime": ("datetime.datetime", "(str, unicode)", "self._makeDatetimeAttribute(attributes[\"" + attributeName + "\"])"),
-    "class": (":class:`" + attributeClassType + "`", None, "self._makeClassAttribute(" + attributeClassType + ", attributes[\"" + attributeName + "\"])"),
+    "string": (
+        "string",
+        None,
+        'self._makeStringAttribute(attributes["' + attributeName + '"])',
+    ),
+    "int": (
+        "integer",
+        None,
+        'self._makeIntAttribute(attributes["' + attributeName + '"])',
+    ),
+    "bool": (
+        "bool",
+        None,
+        'self._makeBoolAttribute(attributes["' + attributeName + '"])',
+    ),
+    "datetime": (
+        "datetime.datetime",
+        "(str, unicode)",
+        'self._makeDatetimeAttribute(attributes["' + attributeName + '"])',
+    ),
+    "class": (
+        ":class:`" + attributeClassType + "`",
+        None,
+        "self._makeClassAttribute("
+        + attributeClassType
+        + ', attributes["'
+        + attributeName
+        + '"])',
+    ),
 }
 
 attributeDocType, attributeAssertType, attributeValue = types[attributeType]
@@ -73,15 +97,19 @@ while not added:
     elif line.startswith("    def "):
         attrName = line[8:-7]
         # Properties will be inserted after __repr__, but before any other function.
-        if attrName != "__repr__" and (attrName == "_identity" or attrName > attributeName or not isProperty):
+        if attrName != "__repr__" and (
+            attrName == "_identity" or attrName > attributeName or not isProperty
+        ):
             if not isProperty:
                 newLines.append("    @property")
             newLines.append("    def " + attributeName + "(self):")
-            newLines.append("        \"\"\"")
+            newLines.append('        """')
             newLines.append("        :type: " + attributeDocType)
-            newLines.append("        \"\"\"")
+            newLines.append('        """')
             if isCompletable:
-                newLines.append("        self._completeIfNotSet(self._" + attributeName + ")")
+                newLines.append(
+                    "        self._completeIfNotSet(self._" + attributeName + ")"
+                )
             newLines.append("        return self._" + attributeName + ".value")
             newLines.append("")
             if isProperty:
@@ -103,7 +131,9 @@ while not added:
             if line:
                 attrName = line[14:-29]
             if not line or attrName > attributeName:
-                newLines.append("        self._" + attributeName + " = github.GithubObject.NotSet")
+                newLines.append(
+                    "        self._" + attributeName + " = github.GithubObject.NotSet"
+                )
                 added = True
     newLines.append(line)
 
@@ -123,10 +153,26 @@ while not added:
             if line:
                 attrName = line[12:-36]
             if not line or attrName > attributeName:
-                newLines.append("        if \"" + attributeName + "\" in attributes:  # pragma no branch")
+                newLines.append(
+                    '        if "'
+                    + attributeName
+                    + '" in attributes:  # pragma no branch'
+                )
                 if attributeAssertType:
-                    newLines.append("            assert attributes[\"" + attributeName + "\"] is None or isinstance(attributes[\"" + attributeName + "\"], " + attributeAssertType + "), attributes[\"" + attributeName + "\"]")
-                newLines.append("            self._" + attributeName + " = " + attributeValue)
+                    newLines.append(
+                        '            assert attributes["'
+                        + attributeName
+                        + '"] is None or isinstance(attributes["'
+                        + attributeName
+                        + '"], '
+                        + attributeAssertType
+                        + '), attributes["'
+                        + attributeName
+                        + '"]'
+                    )
+                newLines.append(
+                    "            self._" + attributeName + " = " + attributeValue
+                )
                 added = True
     newLines.append(line)
 
diff --git a/scripts/fix_headers.py b/scripts/fix_headers.py
index ff6a3c0e..d58dfc05 100755
--- a/scripts/fix_headers.py
+++ b/scripts/fix_headers.py
@@ -61,7 +61,9 @@ def generateLicenseSection(filename):
 
 def listContributors(filename):
     contributors = set()
-    for line in subprocess.check_output(["git", "log", "--format=format:%ad %an <%ae>", "--date=short", "--", filename]).split("\n"):
+    for line in subprocess.check_output(
+        ["git", "log", "--format=format:%ad %an <%ae>", "--date=short", "--", filename]
+    ).split("\n"):
         year = line[0:4]
         name = line[11:]
         contributors.add((year, name))
@@ -105,7 +107,11 @@ class PythonHeader:
 
         if len(bodyLines) > 0 and bodyLines[0] != "":
             newLines.append("")
-            if "import " not in bodyLines[0] and bodyLines[0] != '"""' and not bodyLines[0].startswith("##########"):
+            if (
+                "import " not in bodyLines[0]
+                and bodyLines[0] != '"""'
+                and not bodyLines[0].startswith("##########")
+            ):
                 newLines.append("")
         newLines += bodyLines
 
@@ -129,7 +135,7 @@ class StandardHeader:
 
 
 def findHeadersAndFiles():
-    for root, dirs, files in os.walk('.', topdown=True):
+    for root, dirs, files in os.walk(".", topdown=True):
         if ".git" in dirs:
             dirs.remove(".git")
         if "developer.github.com" in dirs:
diff --git a/tests/AllTests.py b/tests/AllTests.py
index 46dc0a8a..c98ae072 100644
--- a/tests/AllTests.py
+++ b/tests/AllTests.py
@@ -227,5 +227,5 @@ __all__ = [
 ]
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     unittest.main()