diff --git a/fortify/externalmetadata.py b/fortify/externalmetadata.py
index 11ae22d..a7396f5 100644
--- a/fortify/externalmetadata.py
+++ b/fortify/externalmetadata.py
@@ -1,7 +1,7 @@
 from lxml.etree import ElementNamespaceClassLookup
 from lxml.objectify import ObjectifyElementClassLookup, ElementMaker, ObjectifiedElement
 from lxml import objectify
-from fvdl import FortifyObjectifiedDataElement
+from .fvdl import FortifyObjectifiedDataElement
 
 ExternalMetadataParser = objectify.makeparser(ns_clean=True,
                                               remove_blank_text=True,
@@ -43,4 +43,4 @@ def get_shortcuts_for_name(self, name):
     nsmap={
         None: 'xmlns://www.fortifysoftware.com/schema/externalMetadata'
     }
-)
\ No newline at end of file
+)
diff --git a/fortify/fpr.py b/fortify/fpr.py
index e1169c6..c109f51 100644
--- a/fortify/fpr.py
+++ b/fortify/fpr.py
@@ -12,7 +12,7 @@ class FPR(object):
     cache = {}
 
     def __init__(self, project, **kwargs):
-        if isinstance(project, basestring):
+        if isinstance(project, str):
             self._project = project = openfpr(project)
         elif isinstance(project, dict):
             self._project = project
diff --git a/fortify/fvdl.py b/fortify/fvdl.py
index 300c8bc..213947c 100644
--- a/fortify/fvdl.py
+++ b/fortify/fvdl.py
@@ -27,13 +27,13 @@ class lazyproperty(object):
 
     def __init__(self,fget):
         self.fget = fget
-        self.func_name = fget.__name__
+        self.__name__ = fget.__name__
 
     def __get__(self,obj,cls):
         if obj is None:
             return None
         value = self.fget(obj)
-        setattr(obj,self.func_name,value)
+        setattr(obj,self.__name__,value)
         return value
 
 AuditParser = objectify.makeparser(ns_clean=True,
@@ -113,11 +113,11 @@ def datetime(self):
 class TimeStampElement(FortifyObjectifiedDataElement):
     @property
     def date(self):
-        return datetime.date(*map(int, self.get('date').split('-')))
+        return datetime.date(*list(map(int, self.get('date').split('-'))))
 
     @property
     def time(self):
-        return datetime.time(*map(int, self.get('time').split(':')))
+        return datetime.time(*list(map(int, self.get('time').split(':'))))
 
     @property
     def datetime(self):
diff --git a/fortify/issue.py b/fortify/issue.py
index fcbf920..a1eb4e1 100644
--- a/fortify/issue.py
+++ b/fortify/issue.py
@@ -7,13 +7,13 @@
 # object representing a Fortify issue
 class Issue:
     def __init__(self, iid, ruleid, kingdom, type, subtype):
+        self.metadata = {}
         self.id = iid  # instance ID
         self.ruleid = ruleid
         self.kingdom = kingdom
         self.type = type
         self.subtype = subtype
         self.suppressed = False
-        self.metadata = {}
 
     # Factory method to create an instance from a vulnerability XML object directly
     @classmethod
diff --git a/fortify/project.py b/fortify/project.py
index 6562c8e..8bd8567 100644
--- a/fortify/project.py
+++ b/fortify/project.py
@@ -1,4 +1,5 @@
 from __future__ import print_function
+
 from . import FPR, Issue, RemovedIssue
 import sys
 import logging
@@ -62,10 +63,10 @@ def create_project(fprpath):
                 ri = RemovedIssue.from_auditxml(removed)
                 project.add_or_update_issue(ri)
 
-        removedissues = [i for i in issues.values() if i.removed]
-        suppressedissues = [i for i in issues.values() if i.suppressed]
-        hiddenissues = [i for i in issues.values() if i.hidden]
-        naiissues = [i for i in issues.values() if i.is_NAI()]
+        removedissues = [i for i in list(issues.values()) if i.removed]
+        suppressedissues = [i for i in list(issues.values()) if i.suppressed]
+        hiddenissues = [i for i in list(issues.values()) if i.hidden]
+        naiissues = [i for i in list(issues.values()) if i.is_NAI()]
         eprint("Got [%d] issues, [%d] hidden, [%d] NAI, [%d] Suppressed, [%d] Removed" % (len(issues), len(hiddenissues), len(naiissues), len(suppressedissues), len(removedissues)))
 
         return project  # A fortify project, containing one or more issues, with metadata
@@ -120,7 +121,7 @@ def print_vuln_counts(self):
                         'Medium': 0,
                         'Low': 0,
                         }
-        for i in self._issues.values():
+        for i in list(self._issues.values()):
             # exclude hidden, NAI and suppressed (TODO: could be configurable)
             if not (i.hidden or i.is_NAI() or i.suppressed):
                 if i.risk is None:
@@ -134,7 +135,7 @@ def print_vuln_counts(self):
     def print_vuln_summaries(self, open_high_priority):
         # TODO: enable sorting by severity and file_line by default.
         print("file_line,path,id,kingdom,type_subtype,severity,nai,filtered,suppressed,removed,analysis")
-        for i in self._issues.itervalues():
+        for i in self._issues.values():
             if not open_high_priority or i.is_open_high_priority:
                 print("%s:%s,%s,%s,%s,%s,%s,%s,%s,%s,%s,%s" % \
                       (i.metadata['shortfile'], i.metadata['line'], i.metadata['file'], i.id, i.kingdom, i.category, i.risk, i.is_NAI(), "H" if i.hidden else "V", i.suppressed, i.removed, i.analysis))