diff --git a/hgext/convert/monotone.py b/hgext/convert/monotone.py
--- a/hgext/convert/monotone.py
+++ b/hgext/convert/monotone.py
@@ -37,7 +37,7 @@
         if not os.path.exists(os.path.join(path, '_MTN')):
             # Could be a monotone repository (SQLite db file)
             try:
-                f = file(path, 'rb')
+                f = open(path, 'rb')
                 header = f.read(16)
                 f.close()
             except IOError:
diff --git a/hgext/rebase.py b/hgext/rebase.py
--- a/hgext/rebase.py
+++ b/hgext/rebase.py
@@ -1440,7 +1440,7 @@
 def isagitpatch(repo, patchname):
     'Return true if the given patch is in git format'
     mqpatch = os.path.join(repo.mq.path, patchname)
-    for line in patch.linereader(file(mqpatch, 'rb')):
+    for line in patch.linereader(open(mqpatch, 'rb')):
         if line.startswith('diff --git'):
             return True
     return False
diff --git a/hgext/relink.py b/hgext/relink.py
--- a/hgext/relink.py
+++ b/hgext/relink.py
@@ -168,8 +168,8 @@
         source = os.path.join(src, f)
         tgt = os.path.join(dst, f)
         # Binary mode, so that read() works correctly, especially on Windows
-        sfp = file(source, 'rb')
-        dfp = file(tgt, 'rb')
+        sfp = open(source, 'rb')
+        dfp = open(tgt, 'rb')
         sin = sfp.read(CHUNKLEN)
         while sin:
             din = dfp.read(CHUNKLEN)
diff --git a/tests/test-hgweb.t b/tests/test-hgweb.t
--- a/tests/test-hgweb.t
+++ b/tests/test-hgweb.t
@@ -333,7 +333,7 @@
 
 Test the access/error files are opened in append mode
 
-  $ $PYTHON -c "print len(file('access.log').readlines()), 'log lines written'"
+  $ $PYTHON -c "print len(open('access.log', 'rb').readlines()), 'log lines written'"
   14 log lines written
 
 static file
diff --git a/tests/test-impexp-branch.t b/tests/test-impexp-branch.t
--- a/tests/test-impexp-branch.t
+++ b/tests/test-impexp-branch.t
@@ -74,9 +74,9 @@
   $ hg strip --no-backup .
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   >>> import re
-  >>> p = file('../r1.patch', 'rb').read()
+  >>> p = open('../r1.patch', 'rb').read()
   >>> p = re.sub(r'Parent\s+', 'Parent ', p)
-  >>> file('../r1-ws.patch', 'wb').write(p)
+  >>> open('../r1-ws.patch', 'wb').write(p)
   $ hg import --exact ../r1-ws.patch
   applying ../r1-ws.patch
 
diff --git a/tests/test-import-context.t b/tests/test-import-context.t
--- a/tests/test-import-context.t
+++ b/tests/test-import-context.t
@@ -7,7 +7,7 @@
   > lasteol = sys.argv[2] == '1'
   > patterns = sys.argv[3:]
   > 
-  > fp = file(path, 'wb')
+  > fp = open(path, 'wb')
   > for i, pattern in enumerate(patterns):
   >     count = int(pattern[0:-1])
   >     char = pattern[-1] + '\n'
@@ -19,7 +19,7 @@
   > EOF
   $ cat > cat.py <<EOF
   > import sys
-  > sys.stdout.write(repr(file(sys.argv[1], 'rb').read()) + '\n')
+  > sys.stdout.write(repr(open(sys.argv[1], 'rb').read()) + '\n')
   > EOF
 
 Initialize the test repository
diff --git a/tests/test-notify.t b/tests/test-notify.t
--- a/tests/test-notify.t
+++ b/tests/test-notify.t
@@ -421,7 +421,7 @@
   > test = False
   > mbox = mbox
   > EOF
-  $ $PYTHON -c 'file("a/a", "ab").write("no" * 500 + "\xd1\x84" + "\n")'
+  $ $PYTHON -c 'open("a/a", "ab").write("no" * 500 + "\xd1\x84" + "\n")'
   $ hg --cwd a commit -A -m "long line"
   $ hg --traceback --cwd b pull ../a
   pulling from ../a