diff --git a/commands/FBDebugCommands.py b/commands/FBDebugCommands.py
index 763e846..1427e99 100644
--- a/commands/FBDebugCommands.py
+++ b/commands/FBDebugCommands.py
@@ -149,7 +149,6 @@ def run(self, arguments, options):
     formattedCategory = category if category else ''
     breakpointFullName = '{}[{}{} {}]'.format(methodTypeCharacter, breakpointClassName, formattedCategory, selector)
 
-    breakpointCondition = None
     if targetIsClass:
       breakpointCondition = '(void*)object_getClass({}) == {}'.format(expressionForSelf, targetClass)
     else:
diff --git a/commands/FBDisplayCommands.py b/commands/FBDisplayCommands.py
index ac86854..ee4046c 100644
--- a/commands/FBDisplayCommands.py
+++ b/commands/FBDisplayCommands.py
@@ -8,8 +8,6 @@
 # of patent rights can be found in the PATENTS file in the same directory.
 
 import lldb
-import os
-import time
 
 import fblldbviewhelpers as viewHelpers
 import fblldbbase as fb
diff --git a/commands/FBFlickerCommands.py b/commands/FBFlickerCommands.py
index cdb331e..4a14717 100644
--- a/commands/FBFlickerCommands.py
+++ b/commands/FBFlickerCommands.py
@@ -8,13 +8,11 @@
 # of patent rights can be found in the PATENTS file in the same directory.
 
 import os
-import time
 import sys
 
 import lldb
 import fblldbbase as fb
 import fblldbviewhelpers as viewHelpers
-import fblldbinputhelpers as inputHelpers
 import fblldbobjcruntimehelpers as runtimeHelpers
 
 def lldbcommands():
diff --git a/commands/FBInvocationCommands.py b/commands/FBInvocationCommands.py
index a7448c6..e34c2f3 100644
--- a/commands/FBInvocationCommands.py
+++ b/commands/FBInvocationCommands.py
@@ -101,12 +101,6 @@ def findArgAdressAtIndexFromStackFrame(frame, index):
 
 def prettyPrintInvocation(frame, invocation):
   object = fb.evaluateExpression('(id)[(id)' + invocation + ' target]')
-  selector = fb.evaluateExpressionValue('(char *)sel_getName((SEL)[(id)' + invocation + ' selector])').GetSummary()
-  selector = re.sub(r'^"|"$', '', selector)
-
-  objectClassValue = fb.evaluateExpressionValue('(id)object_getClass((id)' + object + ')')
-  objectClass = objectClassValue.GetObjectDescription()
-
   description = fb.evaluateExpressionValue('(id)' + invocation).GetObjectDescription()
   argDescriptions = description.splitlines(True)[4:]
 
diff --git a/commands/FBVisualizationCommands.py b/commands/FBVisualizationCommands.py
index da90fe3..3c0a6a3 100755
--- a/commands/FBVisualizationCommands.py
+++ b/commands/FBVisualizationCommands.py
@@ -7,9 +7,10 @@
 # LICENSE file in the root directory of this source tree. An additional grant
 # of patent rights can be found in the PATENTS file in the same directory.
 
-import lldb
 import os
 import time
+
+import lldb
 import errno
 import fblldbbase as fb
 import fblldbobjecthelpers as objectHelpers
diff --git a/fblldb.py b/fblldb.py
index 383449b..6795bb9 100644
--- a/fblldb.py
+++ b/fblldb.py
@@ -12,7 +12,7 @@
 import imp
 import os
 import shlex
-import sys
+
 from optparse import OptionParser
 
 import fblldbbase as fb
@@ -54,8 +54,6 @@ def loadCommand(module, command, directory, filename, extension):
 def makeRunCommand(command, filename):
   def runCommand(debugger, input, result, dict):
     splitInput = shlex.split(input)
-    options = None
-    args = None
 
     # OptionParser will throw in the case where you want just one big long argument and no
     # options and you enter something that starts with '-' in the argument. e.g.:
@@ -129,13 +127,12 @@ def helpForCommand(command, filename):
     help += '\n\nOptions:'
     for option in command.options():
 
-      optionFlag = ''
       if option.longName and option.shortName:
         optionFlag = option.longName + '/' + option.shortName
       elif option.longName:
         optionFlag = option.longName
       else:
-        optionFlag = optiob.shortName
+        optionFlag = option.shortName
 
       help += '\n  ' + optionFlag + ' '
 
diff --git a/fblldbobjcruntimehelpers.py b/fblldbobjcruntimehelpers.py
index a71e949..c1f634e 100644
--- a/fblldbobjcruntimehelpers.py
+++ b/fblldbobjcruntimehelpers.py
@@ -7,6 +7,8 @@
 # LICENSE file in the root directory of this source tree. An additional grant
 # of patent rights can be found in the PATENTS file in the same directory.
 
+import re
+
 import lldb
 import fblldbbase as fb
 
@@ -58,8 +60,6 @@ def functionPreambleExpressionForSelf():
   return expressionForSelf
 
 def functionPreambleExpressionForObjectParameterAtIndex(parameterIndex):
-  import re
-
   arch = currentArch()
   expresssion = None
   if arch == 'i386':
diff --git a/fblldbviewcontrollerhelpers.py b/fblldbviewcontrollerhelpers.py
index b38fa77..9844284 100644
--- a/fblldbviewcontrollerhelpers.py
+++ b/fblldbviewcontrollerhelpers.py
@@ -8,6 +8,7 @@
 # of patent rights can be found in the PATENTS file in the same directory.
 
 import lldb
+
 import fblldbbase as fb
 import fblldbobjcruntimehelpers as runtimeHelpers
 
@@ -36,7 +37,6 @@ def _recursiveViewControllerDescriptionWithPrefixAndChildPrefix(vc, string, pref
   nextPrefix = childPrefix + '   |'
 
   numChildViewControllers = fb.evaluateIntegerExpression('(int)[(id)[%s childViewControllers] count]' % (vc))
-  childViewControllers = fb.evaluateExpression('(id)[%s childViewControllers]' % (vc))
 
   for i in range(0, numChildViewControllers):
     viewController = fb.evaluateExpression('(id)[(id)[%s childViewControllers] objectAtIndex:%d]' % (vc, i))
diff --git a/fblldbviewhelpers.py b/fblldbviewhelpers.py
index cf1ef0f..a6534d8 100644
--- a/fblldbviewhelpers.py
+++ b/fblldbviewhelpers.py
@@ -77,7 +77,7 @@ def upwardsRecursiveDescription(view, maxDepth=0):
     if viewDescription:
       recursiveDescription.insert(0, viewDescription)
 
-  if len(viewDescription) == 0:
+  if not len(viewDescription):
     return None
 
   currentPrefix = ""