diff --git a/src/SConscript b/src/SConscript
index ef7e670..ab0e1fc 100644
--- a/src/SConscript
+++ b/src/SConscript
@@ -826,7 +826,7 @@
 
 compileDate = _m5.core.compileDate
 _globals = globals()
-for key,val in _m5.core.__dict__.iteritems():
+for key,val in _m5.core.__dict__.items():
     if key.startswith('flag_'):
         flag = key[5:]
         _globals[flag] = val
diff --git a/src/cpu/BaseCPU.py b/src/cpu/BaseCPU.py
index 007c869..60c86a4 100644
--- a/src/cpu/BaseCPU.py
+++ b/src/cpu/BaseCPU.py
@@ -241,26 +241,26 @@
 
     def createInterruptController(self):
         if buildEnv['TARGET_ISA'] == 'sparc':
-            self.interrupts = [SparcInterrupts() for i in xrange(self.numThreads)]
+            self.interrupts = [SparcInterrupts() for i in range(self.numThreads)]
         elif buildEnv['TARGET_ISA'] == 'alpha':
-            self.interrupts = [AlphaInterrupts() for i in xrange(self.numThreads)]
+            self.interrupts = [AlphaInterrupts() for i in range(self.numThreads)]
         elif buildEnv['TARGET_ISA'] == 'x86':
             self.apic_clk_domain = DerivedClockDomain(clk_domain =
                                                       Parent.clk_domain,
                                                       clk_divider = 16)
             self.interrupts = [X86LocalApic(clk_domain = self.apic_clk_domain,
                                            pio_addr=0x2000000000000000)
-                               for i in xrange(self.numThreads)]
+                               for i in range(self.numThreads)]
             _localApic = self.interrupts
         elif buildEnv['TARGET_ISA'] == 'mips':
-            self.interrupts = [MipsInterrupts() for i in xrange(self.numThreads)]
+            self.interrupts = [MipsInterrupts() for i in range(self.numThreads)]
         elif buildEnv['TARGET_ISA'] == 'arm':
-            self.interrupts = [ArmInterrupts() for i in xrange(self.numThreads)]
+            self.interrupts = [ArmInterrupts() for i in range(self.numThreads)]
         elif buildEnv['TARGET_ISA'] == 'power':
-            self.interrupts = [PowerInterrupts() for i in xrange(self.numThreads)]
+            self.interrupts = [PowerInterrupts() for i in range(self.numThreads)]
         elif buildEnv['TARGET_ISA'] == 'riscv':
             self.interrupts = \
-                [RiscvInterrupts() for i in xrange(self.numThreads)]
+                [RiscvInterrupts() for i in range(self.numThreads)]
         else:
             print("Don't know what Interrupt Controller to use for ISA %s" %
                   buildEnv['TARGET_ISA'])
@@ -318,7 +318,7 @@
         # If no ISAs have been created, assume that the user wants the
         # default ISA.
         if len(self.isa) == 0:
-            self.isa = [ default_isa_class() for i in xrange(self.numThreads) ]
+            self.isa = [ default_isa_class() for i in range(self.numThreads) ]
         else:
             if len(self.isa) != int(self.numThreads):
                 raise RuntimeError("Number of ISA instances doesn't "
diff --git a/src/cpu/minor/MinorCPU.py b/src/cpu/minor/MinorCPU.py
index bb4df82..ae97f6c 100644
--- a/src/cpu/minor/MinorCPU.py
+++ b/src/cpu/minor/MinorCPU.py
@@ -102,7 +102,7 @@
     def boxOpClass(op_class):
         return MinorOpClass(opClass=op_class)
 
-    return MinorOpClassSet(opClasses=map(boxOpClass, op_classes))
+    return MinorOpClassSet(opClasses=[ boxOpClass(o) for o in op_classes ])
 
 class MinorFU(SimObject):
     type = 'MinorFU'
diff --git a/src/mem/ruby/network/simple/SimpleNetwork.py b/src/mem/ruby/network/simple/SimpleNetwork.py
index e7a7949..1f86f99 100644
--- a/src/mem/ruby/network/simple/SimpleNetwork.py
+++ b/src/mem/ruby/network/simple/SimpleNetwork.py
@@ -49,7 +49,7 @@
         for link in self.int_links:
             # The network needs number_of_virtual_networks buffers per
             # int_link port
-            for i in xrange(self.number_of_virtual_networks):
+            for i in range(int(self.number_of_virtual_networks)):
                 network_buffers.append(MessageBuffer(ordered = True))
                 network_buffers.append(MessageBuffer(ordered = True))
         self.int_link_buffers = network_buffers
@@ -61,14 +61,14 @@
             # unidirectional internal link
             for link in self.int_links:
                 if link.dst_node == router:
-                    for i in xrange(self.number_of_virtual_networks):
+                    for i in range(int(self.number_of_virtual_networks)):
                         router_buffers.append(MessageBuffer(ordered = True))
 
             # Add message buffers to routers for each external link connection
             for link in self.ext_links:
                 # Routers can only be int_nodes on ext_links
                 if link.int_node in self.routers:
-                    for i in xrange(self.number_of_virtual_networks):
+                    for i in range(int(self.number_of_virtual_networks)):
                         router_buffers.append(MessageBuffer(ordered = True))
             router.port_buffers = router_buffers
 
diff --git a/src/mem/slicc/symbols/Type.py b/src/mem/slicc/symbols/Type.py
index 162c1ab..e9ea618 100644
--- a/src/mem/slicc/symbols/Type.py
+++ b/src/mem/slicc/symbols/Type.py
@@ -724,7 +724,7 @@
             # For each field
             code.indent()
             code('  case ${{self.c_ident}}_NUM:')
-            for enum in reversed(self.enums.values()):
+            for enum in reversed(list(self.enums.values())):
                 # Check if there is a defined machine with this type
                 if enum.primary:
                     code('    base += ${{enum.ident}}_Controller::getNumControllers();')
diff --git a/src/python/m5/SimObject.py b/src/python/m5/SimObject.py
index 9904807..11330b4 100644
--- a/src/python/m5/SimObject.py
+++ b/src/python/m5/SimObject.py
@@ -168,7 +168,7 @@
         code('#include "base/str.hh"')
         code('#include "cxx_config/${name}.hh"')
 
-        if simobj._ports.values() != []:
+        if simobj._ports:
             code('#include "mem/mem_object.hh"')
             code('#include "mem/port.hh"')
 
@@ -726,7 +726,7 @@
             for k, v in sorted(cls._params.local.items())
         ] + [
             PyBindProperty("port_%s_connection_count" % port.name)
-            for port in ports.itervalues()
+            for port in ports.values()
         ]
         for exp in param_exports:
             exp.export(code, "%sParams" % cls)
@@ -813,7 +813,7 @@
 
         for param in params:
             param.cxx_predecls(code)
-        for port in ports.itervalues():
+        for port in ports.values():
             port.cxx_predecls(code)
         code()
 
@@ -846,7 +846,7 @@
 
         for param in params:
             param.cxx_decl(code)
-        for port in ports.itervalues():
+        for port in ports.values():
             port.cxx_decl(code)
 
         code.dedent()
@@ -886,7 +886,8 @@
 
         # Create tuples of (argument, default)
         if defaults:
-            args = args[:-len(defaults)] + zip(args[-len(defaults):], defaults)
+            args = args[:-len(defaults)] + \
+                   list(zip(args[-len(defaults):], defaults))
         # Don't include self in the argument list to PyBind
         args = args[1:]
 
@@ -1118,7 +1119,7 @@
         # Do children before parameter values so that children that
         # are also param values get cloned properly.
         self._children = {}
-        for key,val in ancestor._children.iteritems():
+        for key,val in ancestor._children.items():
             self.add_child(key, val(_memo=memo_dict))
 
         # Inherit parameter values from class using multidict so
@@ -1127,7 +1128,7 @@
         self._values = multidict(ancestor._values)
         self._hr_values = multidict(ancestor._hr_values)
         # clone SimObject-valued parameters
-        for key,val in ancestor._values.iteritems():
+        for key,val in ancestor._values.items():
             val = tryAsSimObjectOrVector(val)
             if val is not None:
                 self._values[key] = val(_memo=memo_dict)
@@ -1135,10 +1136,10 @@
         # clone port references.  no need to use a multidict here
         # since we will be creating new references for all ports.
         self._port_refs = {}
-        for key,val in ancestor._port_refs.iteritems():
+        for key,val in ancestor._port_refs.items():
             self._port_refs[key] = val.clone(self, memo_dict)
         # apply attribute assignments from keyword args, if any
-        for key,val in kwargs.iteritems():
+        for key,val in kwargs.items():
             setattr(self, key, val)
 
     # "Clone" the current instance by creating another instance of
@@ -1310,7 +1311,7 @@
     # that when we instantiate all the parameter objects we're still
     # inside the configuration hierarchy.
     def adoptOrphanParams(self):
-        for key,val in self._values.iteritems():
+        for key,val in self._values.items():
             if not isSimObjectVector(val) and isSimObjectSequence(val):
                 # need to convert raw SimObject sequences to
                 # SimObjectVector class so we can call has_parent()
@@ -1345,7 +1346,7 @@
             return self, True
 
         found_obj = None
-        for child in self._children.itervalues():
+        for child in self._children.values():
             visited = False
             if hasattr(child, '_visited'):
               visited = getattr(child, '_visited')
@@ -1357,7 +1358,7 @@
                           (found_obj.path, child.path))
                 found_obj = child
         # search param space
-        for pname,pdesc in self._params.iteritems():
+        for pname,pdesc in self._params.items():
             if issubclass(pdesc.ptype, ptype):
                 match_obj = self._values[pname]
                 if found_obj != None and found_obj != match_obj:
@@ -1370,7 +1371,7 @@
     def find_all(self, ptype):
         all = {}
         # search children
-        for child in self._children.itervalues():
+        for child in self._children.values():
             # a child could be a list, so ensure we visit each item
             if isinstance(child, list):
                 children = child
@@ -1386,7 +1387,7 @@
                     child_all, done = child.find_all(ptype)
                     all.update(dict(zip(child_all, [done] * len(child_all))))
         # search param space
-        for pname,pdesc in self._params.iteritems():
+        for pname,pdesc in self._params.items():
             if issubclass(pdesc.ptype, ptype):
                 match_obj = self._values[pname]
                 if not isproxy(match_obj) and not isNullPointer(match_obj):
@@ -1399,7 +1400,7 @@
         return self
 
     def unproxyParams(self):
-        for param in self._params.iterkeys():
+        for param in self._params.keys():
             value = self._values.get(param)
             if value != None and isproxy(value):
                 try:
@@ -1412,7 +1413,7 @@
 
         # Unproxy ports in sorted order so that 'append' operations on
         # vector ports are done in a deterministic fashion.
-        port_names = self._ports.keys()
+        port_names = list(self._ports.keys())
         port_names.sort()
         for port_name in port_names:
             port = self._port_refs.get(port_name)
@@ -1489,7 +1490,7 @@
         cc_params = cc_params_struct()
         cc_params.name = str(self)
 
-        param_names = self._params.keys()
+        param_names = list(self._params.keys())
         param_names.sort()
         for param in param_names:
             value = self._values.get(param)
@@ -1513,7 +1514,7 @@
             else:
                 setattr(cc_params, param, value)
 
-        port_names = self._ports.keys()
+        port_names = list(self._ports.keys())
         port_names.sort()
         for port_name in port_names:
             port = self._port_refs.get(port_name, None)
@@ -1550,7 +1551,7 @@
         # The order of the dict is implementation dependent, so sort
         # it based on the key (name) to ensure the order is the same
         # on all hosts
-        for (name, child) in sorted(self._children.iteritems()):
+        for (name, child) in sorted(self._children.items()):
             for obj in child.descendants():
                 yield obj
 
@@ -1567,7 +1568,7 @@
     def connectPorts(self):
         # Sort the ports based on their attribute name to ensure the
         # order is the same on all hosts
-        for (attr, portRef) in sorted(self._port_refs.iteritems()):
+        for (attr, portRef) in sorted(self._port_refs.items()):
             portRef.ccConnect()
 
     # Default function for generating the device structure.
@@ -1577,7 +1578,7 @@
         yield  # make this function a (null) generator
 
     def recurseDeviceTree(self, state):
-        for child in self._children.itervalues():
+        for child in self._children.values():
             for item in child: # For looping over SimObjectVectors
                 for dt in item.generateDeviceTree(state):
                     yield dt
diff --git a/src/python/m5/main.py b/src/python/m5/main.py
index 08b1464..eeaa947 100644
--- a/src/python/m5/main.py
+++ b/src/python/m5/main.py
@@ -261,7 +261,7 @@
         print()
         print('compiled %s' % defines.compileDate)
         print('build options:')
-        keys = defines.buildEnv.keys()
+        keys = list(defines.buildEnv.keys())
         keys.sort()
         for key in keys:
             val = defines.buildEnv[key]
@@ -289,12 +289,12 @@
         import SimObject
         done = True
         print("SimObjects:")
-        objects = SimObject.allClasses.keys()
+        objects = list(SimObject.allClasses.keys())
         objects.sort()
         for name in objects:
             obj = SimObject.allClasses[name]
             print("    %s" % obj)
-            params = obj._params.keys()
+            params = list(obj._params.keys())
             params.sort()
             for pname in params:
                 param = obj._params[pname]
diff --git a/src/python/m5/objects/__init__.py b/src/python/m5/objects/__init__.py
index 8186c52..302bb6f 100644
--- a/src/python/m5/objects/__init__.py
+++ b/src/python/m5/objects/__init__.py
@@ -34,6 +34,6 @@
 except NameError:
     modules = { }
 
-for module in modules.iterkeys():
+for module in modules.keys():
     if module.startswith('m5.objects.'):
         exec("from %s import *" % module)
diff --git a/src/python/m5/options.py b/src/python/m5/options.py
index 1f534a3..5b291b1 100644
--- a/src/python/m5/options.py
+++ b/src/python/m5/options.py
@@ -129,7 +129,7 @@
     def parse_args(self):
         opts,args = self._optparse.parse_args()
 
-        for key,val in opts.__dict__.iteritems():
+        for key,val in opts.__dict__.items():
             if val is not None or key not in self:
                 self[key] = val
 
diff --git a/src/python/m5/params.py b/src/python/m5/params.py
index 0c189c9..729fc12 100644
--- a/src/python/m5/params.py
+++ b/src/python/m5/params.py
@@ -904,7 +904,7 @@
         code('%s to_bool(%s, %s);' % (ret, src, dest))
 
 def IncEthernetAddr(addr, val = 1):
-    bytes = map(lambda x: int(x, 16), addr.split(':'))
+    bytes = [ int(x, 16) for x in addr.split(':') ]
     bytes[5] += val
     for i in (5, 4, 3, 2, 1):
         val,rem = divmod(bytes[i], 256)
@@ -1282,7 +1282,7 @@
                 raise TypeError("Enum-derived class attribute 'map' " \
                       "must be of type dict")
             # build list of value strings from map
-            cls.vals = cls.map.keys()
+            cls.vals = list(cls.map.keys())
             cls.vals.sort()
         elif 'vals' in init_dict:
             if not isinstance(cls.vals, list):
@@ -1453,7 +1453,7 @@
     @classmethod
     def cxx_ini_parse(cls, code, src, dest, ret):
         code('if (false) {')
-        for elem_name in cls.map.iterkeys():
+        for elem_name in cls.map.keys():
             code('} else if (%s == "%s") {' % (src, elem_name))
             code.indent()
             code('%s = Enums::%s;' % (dest, elem_name))
diff --git a/src/python/m5/util/code_formatter.py b/src/python/m5/util/code_formatter.py
index 129fbd0..c845c90 100644
--- a/src/python/m5/util/code_formatter.py
+++ b/src/python/m5/util/code_formatter.py
@@ -296,11 +296,11 @@
     f('    $y')
     f('''$__file__:$__line__
 {''')
-    f("${{', '.join(str(x) for x in xrange(4))}}")
+    f("${{', '.join(str(x) for x in range(4))}}")
     f('${x}')
     f('$x')
     f.indent()
-    for i in xrange(5):
+    for i in range(5):
         f('$x')
         f('$i')
         f('$0', "zero")
diff --git a/src/python/m5/util/dot_writer.py b/src/python/m5/util/dot_writer.py
index 7155f11..f368faa 100644
--- a/src/python/m5/util/dot_writer.py
+++ b/src/python/m5/util/dot_writer.py
@@ -67,7 +67,7 @@
     pydot = False
 
 def simnode_children(simNode):
-    for child in simNode._children.itervalues():
+    for child in simNode._children.values():
         if isNullPointer(child):
             continue
         if isSimObjectVector(child):
diff --git a/src/python/m5/util/jobfile.py b/src/python/m5/util/jobfile.py
index 613289a..45214a0 100644
--- a/src/python/m5/util/jobfile.py
+++ b/src/python/m5/util/jobfile.py
@@ -40,7 +40,7 @@
         if not isinstance(obj, Data):
             raise AttributeError("can only update from Data object")
 
-        for key,val in obj.__dict__.iteritems():
+        for key,val in obj.__dict__.items():
             if key.startswith('_') or key in ('name', 'desc'):
                 continue
 
@@ -57,7 +57,7 @@
                     (key, self.__dict__[key], val))
 
             d = self.__dict__[key]
-            for k,v in val.iteritems():
+            for k,v in val.items():
                 if k in d:
                     raise AttributeError(
                         "%s specified more than once in %s" % (k, key))
@@ -100,7 +100,7 @@
         return self.__dict__[key]
 
     def __iter__(self):
-        keys = self.__dict__.keys()
+        keys = list(self.__dict__.keys())
         keys.sort()
         for key in keys:
             if not key.startswith('_'):
@@ -115,7 +115,7 @@
 
     def __repr__(self):
         d = {}
-        for key,value in self.__dict__.iteritems():
+        for key,value in self.__dict__.items():
             if not key.startswith('_'):
                 d[key] = value
 
diff --git a/src/python/m5/util/multidict.py b/src/python/m5/util/multidict.py
index 5cc13ee..2330156 100644
--- a/src/python/m5/util/multidict.py
+++ b/src/python/m5/util/multidict.py
@@ -82,27 +82,18 @@
     def has_key(self, key):
         return key in self
 
-    def iteritems(self):
+    def items(self):
         for item in self.next():
             yield item
 
-    def items(self):
-        return [ item for item in self.next() ]
-
-    def iterkeys(self):
+    def keys(self):
         for key,value in self.next():
             yield key
 
-    def keys(self):
-        return [ key for key,value in self.next() ]
-
-    def itervalues(self):
+    def values(self):
         for key,value in self.next():
             yield value
 
-    def values(self):
-        return [ value for key,value in self.next() ]
-
     def get(self, key, default=None):
         try:
             return self[key]
@@ -152,8 +143,8 @@
 
     test2.setdefault('f', multidict)
 
-    print('test1>', test1.items())
-    print('test2>', test2.items())
+    print('test1>', list(test1.items()))
+    print('test2>', list(test2.items()))
     #print(test1['a'])
     print(test1['b'])
     print(test1['c'])
@@ -166,7 +157,7 @@
     print(test2['d'])
     print(test2['e'])
 
-    for key in test2.iterkeys():
+    for key in test2.keys():
         print(key)
 
     test2.get('g', 'foo')
diff --git a/src/python/m5/util/smartdict.py b/src/python/m5/util/smartdict.py
index 76b7eb4..b8127b1 100644
--- a/src/python/m5/util/smartdict.py
+++ b/src/python/m5/util/smartdict.py
@@ -138,17 +138,11 @@
         dict.__setitem__(self, key, str(item))
 
     def values(self):
-        return [ Variable(v) for v in dict.values(self) ]
-
-    def itervalues(self):
-        for value in dict.itervalues(self):
+        for value in dict.values(self):
             yield Variable(value)
 
     def items(self):
-        return [ (k, Variable(v)) for k,v in dict.items(self) ]
-
-    def iteritems(self):
-        for key,value in dict.iteritems(self):
+        for key,value in dict.items(self):
             yield key, Variable(value)
 
     def get(self, key, default='False'):
diff --git a/src/python/m5/util/sorteddict.py b/src/python/m5/util/sorteddict.py
index dd534b3..28c9c60 100644
--- a/src/python/m5/util/sorteddict.py
+++ b/src/python/m5/util/sorteddict.py
@@ -41,7 +41,7 @@
         try:
             return self._sorted_keys
         except AttributeError:
-            _sorted_keys = self.sorted(dict.iterkeys(self))
+            _sorted_keys = self.sorted(dict.keys(self))
             self._sorted_keys = _sorted_keys
             return _sorted_keys
 
@@ -89,7 +89,7 @@
 
     def __repr__(self):
         return 'SortedDict({%s})' % ', '.join('%r: %r' % item
-                                              for item in self.iteritems())
+                                              for item in self.items())
     def __setitem__(self, key, item):
         dict.__setitem__(self, key, item)
         self._del_keys()
@@ -107,22 +107,13 @@
         return t(self)
 
     def keys(self):
-        return self._keys[:]
+        return self._keys
 
     def values(self):
-        return list(self.itervalues())
-
-    def items(self):
-        return list(self.iteritems())
-
-    def iterkeys(self):
-        return iter(self._keys)
-
-    def itervalues(self):
         for k in self._keys:
             yield self[k]
 
-    def iteritems(self):
+    def items(self):
         for k in self._keys:
             yield k, self[k]
 
@@ -184,12 +175,12 @@
 if __name__ == '__main__':
     def display(d):
         print(d)
-        print(d.keys())
-        print(list(d.iterkeys()))
-        print(d.values())
-        print(list(d.itervalues()))
-        print(d.items())
-        print(list(d.iteritems()))
+        print(list(d.keys()))
+        print(list(d.keys()))
+        print(list(d.values()))
+        print(list(d.values()))
+        print(list(d.items()))
+        print(list(d.items()))
 
     d = SortedDict(x=24,e=5,j=4,b=2,z=26,d=4)
     display(d)
diff --git a/src/python/m5/util/terminal.py b/src/python/m5/util/terminal.py
index 9dc5d98..00f8b70 100644
--- a/src/python/m5/util/terminal.py
+++ b/src/python/m5/util/terminal.py
@@ -63,7 +63,7 @@
        'Normal': 'sgr0'
 }
 
-capability_names = capability_map.keys()
+capability_names = list(capability_map.keys())
 
 def null_cap_string(s, *args):
     return ''
@@ -84,7 +84,7 @@
     def __init__(self, cap_string):
         for i, c in enumerate(color_names):
             setattr(self, c, cap_string('setaf', i))
-        for name, cap in capability_map.iteritems():
+        for name, cap in capability_map.items():
             setattr(self, name, cap_string(cap))
 
 termcap = ColorStrings(cap_string)
diff --git a/src/systemc/tests/tlm/endian_conv/testall.py b/src/systemc/tests/tlm/endian_conv/testall.py
index 63bf6ab..a534fa7 100644
--- a/src/systemc/tests/tlm/endian_conv/testall.py
+++ b/src/systemc/tests/tlm/endian_conv/testall.py
@@ -93,7 +93,7 @@
   pr_enabled = 0.5
   bus_widths = [1, 2, 4, 8, 16]
   data_widths = [1, 2, 4, 8, 16] + [1, 2, 4, 8] + [1, 2, 4] + [1, 2]
-  lengths = range(1,33) + range(1,17) + range(1,9) + range(1,5) + range(1,3)
+  lengths = list(range(1,33)) + list(range(1,17)) + list(range(1,9)) + list(range(1,5)) + list(range(1,3))
   pr_short_be = 0.2
   pr_stream = 0.1
   nr_generated = 0
@@ -105,8 +105,8 @@
       if data_width <= bus_width:  break
       if random.random() < 0.25:  break
     length = random.choice(lengths)
-    addr_base = random.choice(range(0,1024,bus_width))
-    addr_offset = random.choice(range(bus_width)+[0]*(bus_width/2))
+    addr_base = random.choice(list(range(0,1024,bus_width)))
+    addr_offset = random.choice(list(range(bus_width))+[0]*(bus_width/2))
     txn = transaction(
       bus_width = bus_width,
       data_width = data_width,