diff --git a/rest_framework/pagination.py b/rest_framework/pagination.py
index 0255cfc7f..a4a5230ef 100644
--- a/rest_framework/pagination.py
+++ b/rest_framework/pagination.py
@@ -31,7 +31,7 @@ def _positive_int(integer_string, strict=False, cutoff=None):
     if ret < 0 or (ret == 0 and strict):
         raise ValueError()
     if cutoff:
-        ret = min(ret, cutoff)
+        return min(ret, cutoff)
     return ret
 
 
@@ -95,7 +95,7 @@ def _get_displayed_page_numbers(current, final):
     # Now sort the page numbers and drop anything outside the limits.
     included = [
         idx for idx in sorted(list(included))
-        if idx > 0 and idx <= final
+        if 0 < idx <= final
     ]
 
     # Finally insert any `...` breaks
diff --git a/rest_framework/status.py b/rest_framework/status.py
index c016b63c6..d4522df3d 100644
--- a/rest_framework/status.py
+++ b/rest_framework/status.py
@@ -9,23 +9,23 @@ from __future__ import unicode_literals
 
 
 def is_informational(code):
-    return code >= 100 and code <= 199
+    return 100 <= code <= 199
 
 
 def is_success(code):
-    return code >= 200 and code <= 299
+    return 200 <= code <= 299
 
 
 def is_redirect(code):
-    return code >= 300 and code <= 399
+    return 300 <= code <= 399
 
 
 def is_client_error(code):
-    return code >= 400 and code <= 499
+    return 400 <= code <= 499
 
 
 def is_server_error(code):
-    return code >= 500 and code <= 599
+    return 500 <= code <= 599
 
 
 HTTP_100_CONTINUE = 100
diff --git a/rest_framework/utils/formatting.py b/rest_framework/utils/formatting.py
index 78cb37e56..aa805f14e 100644
--- a/rest_framework/utils/formatting.py
+++ b/rest_framework/utils/formatting.py
@@ -52,8 +52,8 @@ def camelcase_to_spaces(content):
     Translate 'CamelCaseNames' to 'Camel Case Names'.
     Used when generating names from view classes.
     """
-    camelcase_boundry = '(((?<=[a-z])[A-Z])|([A-Z](?![A-Z]|$)))'
-    content = re.sub(camelcase_boundry, ' \\1', content).strip()
+    camelcase_boundary = '(((?<=[a-z])[A-Z])|([A-Z](?![A-Z]|$)))'
+    content = re.sub(camelcase_boundary, ' \\1', content).strip()
     return ' '.join(content.split('_')).title()