diff --git a/lib/ansible/inventory/__init__.py b/lib/ansible/inventory/__init__.py
index a8cca8faaf..830d74c01e 100644
--- a/lib/ansible/inventory/__init__.py
+++ b/lib/ansible/inventory/__init__.py
@@ -108,7 +108,7 @@ class Inventory(object):
                     inv_file = open(host_list)
                     first_line = inv_file.readlines()[0]
                     inv_file.close()
-                    if first_line.find('#!') == 0:
+                    if first_line.startswith('#!'):
                         shebang_present = True
                 except:
                     pass
diff --git a/lib/ansible/module_utils/known_hosts.py b/lib/ansible/module_utils/known_hosts.py
index e6912d9184..68ef282831 100644
--- a/lib/ansible/module_utils/known_hosts.py
+++ b/lib/ansible/module_utils/known_hosts.py
@@ -98,7 +98,7 @@ def not_in_host_file(self, host):
             host_fh.close()
 
         for line in data.split("\n"):
-            if line is None or line.find(" ") == -1:
+            if line is None or " " not in line:
                 continue
             tokens = line.split()
             if tokens[0].find(HASHED_KEY_MAGIC) == 0:
diff --git a/lib/ansible/utils/__init__.py b/lib/ansible/utils/__init__.py
index 972089d6a3..2b86034bde 100644
--- a/lib/ansible/utils/__init__.py
+++ b/lib/ansible/utils/__init__.py
@@ -314,7 +314,7 @@ def parse_json(raw_data):
             raise
 
         for t in tokens:
-            if t.find("=") == -1:
+            if "=" not in t:
                 raise errors.AnsibleError("failed to parse: %s" % orig_data)
             (key,value) = t.split("=", 1)
             if key == 'changed' or 'failed':
@@ -1035,7 +1035,7 @@ def listify_lookup_plugin_terms(terms, basedir, inject):
             # not sure why the "/" is in above code :)
             try:
                 new_terms = template.template(basedir, "{{ %s }}" % terms, inject)
-                if isinstance(new_terms, basestring) and new_terms.find("{{") != -1:
+                if isinstance(new_terms, basestring) and "{{" in new_terms:
                     pass
                 else:
                     terms = new_terms
diff --git a/library/cloud/gc_storage b/library/cloud/gc_storage
index cbf72aa8e9..4bbf9eabae 100644
--- a/library/cloud/gc_storage
+++ b/library/cloud/gc_storage
@@ -154,7 +154,7 @@ def keysum(module, gs, bucket, obj):
     key_check = bucket.get_key(obj)
     if key_check:
         md5_remote = key_check.etag[1:-1]
-        etag_multipart = md5_remote.find('-')!=-1 #Check for multipart, etag is not md5
+        etag_multipart = '-' in md5_remote # Check for multipart, etag is not md5
         if etag_multipart is True:
             module.fail_json(msg="Files uploaded with multipart of gs are not supported with checksum, unable to compute checksum.")
     return md5_remote
diff --git a/library/cloud/s3 b/library/cloud/s3
index 6d64a3f43f..aaa2e0f4ff 100644
--- a/library/cloud/s3
+++ b/library/cloud/s3
@@ -147,7 +147,7 @@ def keysum(module, s3, bucket, obj):
     key_check = bucket.get_key(obj)
     if key_check:
         md5_remote = key_check.etag[1:-1]
-        etag_multipart = md5_remote.find('-')!=-1 #Check for multipart, etag is not md5
+        etag_multipart = '-' in md5_remote # Check for multipart, etag is not md5
         if etag_multipart is True:
             module.fail_json(msg="Files uploaded with multipart of s3 are not supported with checksum, unable to compute checksum.")
     return md5_remote
diff --git a/library/system/service b/library/system/service
index 97a970a951..141b2ac418 100644
--- a/library/system/service
+++ b/library/system/service
@@ -1008,7 +1008,7 @@ class SunOSService(Service):
         #    enabled   true
         #    enabled   false
         for line in stdout.split("\n"):
-            if line.find("enabled") == 0:
+            if line.startswith("enabled"):
                 if "true" in line:
                     enabled = True
                 if "temporary" in line: