fix flakes

src/allmydata/scripts/common.py

@@ -41,7 +41,6 @@ class BasedirMixin:
         self['basedirs'] = [os.path.abspath(os.path.expanduser(b)) for b in self.basedirs]
 
     def parseArgs(self, *args):
-        from allmydata.util.assertutil import precondition
         self.basedirs = []
         if self['basedir']:
             precondition(isinstance(self['basedir'], (str, unicode)), self['basedir'])
@@ -68,7 +67,6 @@ class BasedirMixin:
 
 class NoDefaultBasedirMixin(BasedirMixin):
     def parseArgs(self, *args):
-        from allmydata.util.assertutil import precondition
         # create-client won't default to --basedir=~/.tahoe
         self.basedirs = []
         if self['basedir']:

src/allmydata/scripts/tahoe_add_alias.py

@@ -1,7 +1,6 @@
 
 import os.path
 import codecs
-import sys
 from allmydata import uri
 from allmydata.scripts.common_http import do_http, check_http_error
 from allmydata.scripts.common import get_aliases

src/allmydata/scripts/tahoe_backup.py

@@ -9,10 +9,8 @@ from allmydata.scripts.common import get_alias, escape_path, DEFAULT_ALIAS, \
 from allmydata.scripts.common_http import do_http
 from allmydata.util import time_format
 from allmydata.scripts import backupdb
-import sys
 from allmydata.util.stringutils import unicode_to_stdout, listdir_unicode, open_unicode
 from allmydata.util.assertutil import precondition
-from twisted.python import usage
 
 
 class HTTPError(Exception):

src/allmydata/scripts/tahoe_cp.py

@@ -2,14 +2,12 @@
 import os.path
 import urllib
 import simplejson
-import sys
 from cStringIO import StringIO
 from twisted.python.failure import Failure
 from allmydata.scripts.common import get_alias, escape_path, \
                                      DefaultAliasMarker, UnknownAliasError
 from allmydata.scripts.common_http import do_http
 from allmydata import uri
-from twisted.python import usage
 from allmydata.util.stringutils import unicode_to_url, listdir_unicode, open_unicode
 from allmydata.util.assertutil import precondition
 

src/allmydata/test/test_cli.py

@@ -27,8 +27,7 @@ from allmydata.test.no_network import GridTestMixin
 from twisted.internet import threads # CLI tests use deferToThread
 from twisted.python import usage
 
-from allmydata.util.stringutils import listdir_unicode, open_unicode, \
-     unicode_platform, FilenameEncodingError
+from allmydata.util.stringutils import listdir_unicode, unicode_platform, FilenameEncodingError
 
 timeout = 480 # deep_check takes 360s on Zandr's linksys box, others take > 240s
 
@@ -650,7 +649,6 @@ class CreateAlias(GridTestMixin, CLITestMixin, unittest.TestCase):
 
         self.basedir = "cli/CreateAlias/create_unicode"
         self.set_up_grid()
-        aliasfile = os.path.join(self.get_clientdir(), "private", "aliases")
 
         d = self.do_cli("create-alias", "études")
         def _check_create_unicode((rc,stdout,stderr)):
@@ -700,11 +698,11 @@ class CreateAlias(GridTestMixin, CLITestMixin, unittest.TestCase):
 
         d.addCallback(lambda res: self.do_cli("get",
                       get_aliases(self.get_clientdir())[u"études"] + "/lumière.txt"))
-        def _check_get((rc, stdout, stderr)):
+        def _check_get2((rc, stdout, stderr)):
             self.failUnlessEqual(rc, 0)
             self.failIf(stderr)
             self.failUnlessEqual(stdout, "Let the sunshine In!")
-        d.addCallback(_check_get)
+        d.addCallback(_check_get2)
 
         return d
 
@@ -986,7 +984,6 @@ class Put(GridTestMixin, CLITestMixin, unittest.TestCase):
         self.set_up_grid()
 
         rel_fn = os.path.join(self.basedir, "DATAFILE")
-        abs_fn = os.path.abspath(rel_fn)
         # we make the file small enough to fit in a LIT file, for speed
         DATA = "short file"
         f = open(rel_fn, "w")

src/allmydata/test/test_sftp.py

@@ -1,5 +1,5 @@
 
-import re, struct, traceback, gc, time, calendar
+import re, struct, traceback, time, calendar
 from stat import S_IFREG, S_IFDIR
 
 from twisted.trial import unittest
@@ -879,6 +879,7 @@ class Handler(GridTestMixin, ShouldFailMixin, unittest.TestCase):
 
             # deliberate race between openFile and renameFile
             d3 = self.handler.renameFile("new", "new2")
+            del d3
             return d2
         d.addCallback(_open_and_rename_race)
         def _write_rename_race(wf):