Fix ResourceWarning in fstail.py

src/ZODB/scripts/fstail.py

@@ -26,21 +26,21 @@
     from sha import sha as sha1
 
 def main(path, ntxn):
-    f = open(path, "rb")
-    f.seek(0, 2)
-    th = prev_txn(f)
-    i = ntxn
-    while th and i > 0:
-        hash = sha1(th.get_raw_data()).digest()
-        l = len(str(th.get_timestamp())) + 1
-        th.read_meta()
-        print("%s: hash=%s" % (th.get_timestamp(),
-                               binascii.hexlify(hash).decode()))
-        print(("user=%r description=%r length=%d offset=%d"
-               % (th.user, th.descr, th.length, th.get_data_offset())))
-        print()
-        th = th.prev_txn()
-        i -= 1
+    with open(path, "rb") as f:
+        f.seek(0, 2)
+        th = prev_txn(f)
+        i = ntxn
+        while th and i > 0:
+            hash = sha1(th.get_raw_data()).digest()
+            l = len(str(th.get_timestamp())) + 1
+            th.read_meta()
+            print("%s: hash=%s" % (th.get_timestamp(),
+                                   binascii.hexlify(hash).decode()))
+            print(("user=%r description=%r length=%d offset=%d"
+                   % (th.user, th.descr, th.length, th.get_data_offset())))
+            print()
+            th = th.prev_txn()
+            i -= 1
 
 def Main():
     ntxn = 10

src/ZODB/scripts/tests/fstail.txt

@@ -11,7 +11,7 @@ We have to prepare a FileStorage first:
   >>> from ZODB.DB import DB
   >>> import transaction
   >>> from tempfile import mktemp
-  >>> storagefile = mktemp()
+  >>> storagefile = mktemp(suffix='.fs')
   >>> base_storage = FileStorage(storagefile)
   >>> database = DB(base_storage)
   >>> connection1 = database.open()
@@ -33,6 +33,7 @@ Now lets have a look at the last transactions of this FileStorage:
 Now clean up the storage again:
 
   >>> import os
+  >>> connection1.close()
   >>> base_storage.close()
   >>> os.unlink(storagefile)
   >>> os.unlink(storagefile+'.index')