diff --git a/wikitools3/api.py b/wikitools3/api.py
index 6ba2e5a..35414e8 100644
--- a/wikitools3/api.py
+++ b/wikitools3/api.py
@@ -96,7 +96,7 @@ def __init__(self, wiki, data, write=False, multipart=False):
         self.response = False
         if wiki.auth:
             self.headers["Authorization"] = "Basic {0}".format(
-                base64.encodestring(f"{wiki.auth}:{wiki.httppass}")
+                base64.encodebytes(f"{wiki.auth}:{wiki.httppass}".encode()).decode()
             ).replace("\n", "")
         if hasattr(wiki, "passman"):
             self.opener = urllib.request.build_opener(
diff --git a/wikitools3/page.py b/wikitools3/page.py
index a79d3c2..138480b 100644
--- a/wikitools3/page.py
+++ b/wikitools3/page.py
@@ -166,7 +166,7 @@ def setPageInfo(self):
             params["redirects"] = ""
         req = api.APIRequest(self.site, params)
         response = req.query(False)
-        self.pageid = response["query"]["pages"].keys()[0]
+        self.pageid = int(list(response["query"]["pages"].keys())[0])
         if self.pageid > 0:
             self.exists = True
         if "missing" in response["query"]["pages"][str(self.pageid)]:
@@ -185,7 +185,7 @@ def setPageInfo(self):
                 self.unprefixedtitle = self.title.split(":", 1)[1]
             else:
                 self.unprefixedtitle = self.title
-        self.pageid = int(self.pageid)
+        self.pageid = self.pageid
         self.pageid = max(self.pageid, 0)
         return self
 
diff --git a/wikitools3/wiki.py b/wikitools3/wiki.py
index cc4a665..d9d0458 100644
--- a/wikitools3/wiki.py
+++ b/wikitools3/wiki.py
@@ -375,7 +375,7 @@ def getToken(self, type):
                 token = response["query"]["pages"][pid]["edittoken"]
             else:
                 pages = response["query"]["pages"]
-                token = pages.itervalues().next()["edittoken"]
+                token = next(iter(pages.values()))["edittoken"]
         return token
 
     def __hash__(self):