diff --git a/rowers/views/analysisviews.py b/rowers/views/analysisviews.py
index 7f9379d4..3f5e4729 100644
--- a/rowers/views/analysisviews.py
+++ b/rowers/views/analysisviews.py
@@ -1,11 +1,7 @@
-import time
 from rowers.forms import analysischoices
-from django.contrib.staticfiles import finders
 from rowers.views.statements import *
 
-import collections
-import simplejson
-from jinja2 import Template, Environment, FileSystemLoader
+from jinja2 import Environment, FileSystemLoader
 from rowers.rower_rules import can_view_session
 
 
@@ -28,10 +24,16 @@ defaultoptions = {
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user,"
+                  " please log in to access this functionality",
                   redirect_field_name=None)
-@permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
-def analysis_new(request, userid=0, function='boxplot', teamid=0, id='', session=0):
+@permission_required('rower.is_coach',
+                     fn=get_user_by_userid,
+                     raise_exception=True)
+def analysis_new(request,
+                 userid=0,
+                 function='boxplot', teamid=0, id='', session=0):
     r = getrequestrower(request, userid=userid)
     user = r.user
     userid = user.id
@@ -62,10 +64,6 @@ def analysis_new(request, userid=0, function='boxplot', teamid=0, id='', session
         options = defaultoptions
 
     options['userid'] = userid
-    try:
-        workouttypes = options['workouttypes']
-    except KeyError:  # pragma: no cover
-        workouttypes = ['rower', 'dynamic', 'slides']
 
     try:
         modalities = options['modalities']
@@ -79,11 +77,6 @@ def analysis_new(request, userid=0, function='boxplot', teamid=0, id='', session
     except KeyError:
         worldclass = False
 
-    try:
-        includereststrokes = options['includereststrokes']
-    except KeyError:  # pragma: no cover
-        includereststrokes = False
-
     if 'startdate' in request.session:
         startdate = iso8601.parse_date(request.session['startdate'])
     else:
@@ -97,8 +90,6 @@ def analysis_new(request, userid=0, function='boxplot', teamid=0, id='', session
     else:
         enddate = timezone.now()
 
-    workstrokesonly = not includereststrokes
-
     waterboattype = mytypes.waterboattype
 
     if request.method == 'POST':
@@ -296,15 +287,9 @@ def trendflexdata(workouts, options, userid=0):
     workmin = options['workmin']
     workmax = options['workmax']
     ploterrorbars = options['ploterrorbars']
-    cpfit = options['cpfit']
-    piece = options['piece']
     ids = options['ids']
     workstrokesonly = not includereststrokes
 
-    labeldict = {
-        int(w.id): w.__str__() for w in workouts
-    }
-
     fieldlist, fielddict = dataprep.getstatsfields()
     fieldlist = [xparam, yparam, groupby,
                  'workoutid', 'spm', 'driveenergy',
@@ -315,7 +300,7 @@ def trendflexdata(workouts, options, userid=0):
 
     if xparam == groupby:  # pragma: no cover
         datadf['groupby'] = datadf[xparam]
-        groupy = 'groupby'
+        groupby = 'groupby'
 
     datadf = dataprep.clean_df_stats(datadf, workstrokesonly=workstrokesonly)
 
@@ -497,16 +482,14 @@ def flexalldata(workouts, options):
 def histodata(workouts, options):
     includereststrokes = options['includereststrokes']
     plotfield = options['plotfield']
-    function = options['function']
     spmmin = options['spmmin']
     spmmax = options['spmmax']
     workmin = options['workmin']
     workmax = options['workmax']
 
-    workstrokesonly = not includereststrokes
-
     script, div = interactive_histoall(workouts, plotfield, includereststrokes,
-                                       spmmin=spmmin, spmmax=spmmax, workmin=workmin, workmax=workmax)
+                                       spmmin=spmmin, spmmax=spmmax,
+                                       workmin=workmin, workmax=workmax)
 
     scripta = script.split('\n')[2:-1]
     script = ''.join(scripta)
@@ -522,7 +505,6 @@ def cpdata(workouts, options):
     u = User.objects.get(id=userid)
     r = u.rower
 
-    ids = [w.id for w in workouts]
     delta, cpvalue, avgpower, workoutnames, urls = dataprep.fetchcp_new(
         r, workouts)
 
@@ -565,7 +547,6 @@ def cpdata(workouts, options):
             if r.birthdate:
                 age = calculate_age(r.birthdate)
             else:  # pragma: no cover
-                worldclasspower = None
                 age = 0
 
             agerecords = CalcAgePerformance.objects.filter(
@@ -597,17 +578,11 @@ def cpdata(workouts, options):
         div = res[1]
         p1 = res[2]
         ratio = res[3]
-        paulslope = 1
-        paulintercept = 1
-        message = res[4]
     else:  # pragma: no cover
         script = ''
         div = '<p>No ranking pieces found.</p>'
-        paulslope = 1
-        paulintercept = 1
         p1 = [1, 1, 1, 1]
         ratio = 1
-        message = ""
 
     scripta = script.split('\n')[2:-1]
     script = ''.join(scripta)
@@ -677,23 +652,12 @@ def cpdata(workouts, options):
 
 def statsdata(workouts, options):
     includereststrokes = options['includereststrokes']
-    spmmin = options['spmmin']
-    spmmax = options['spmmax']
-    workmin = options['workmin']
-    workmax = options['workmax']
     ids = options['ids']
-    userid = options['userid']
-    plotfield = options['plotfield']
-    function = options['function']
 
     workstrokesonly = not includereststrokes
 
     ids = [w.id for w in workouts]
 
-    datamapping = {
-        w.id: w.date for w in workouts
-    }
-
     fieldlist, fielddict = dataprep.getstatsfields()
     # prepare data frame
     datadf, extracols = dataprep.read_cols_df_sql(ids, fieldlist)
@@ -791,12 +755,8 @@ def boxplotdata(workouts, options):
     ids = options['ids']
     userid = options['userid']
     plotfield = options['plotfield']
-    function = options['function']
 
     workstrokesonly = not includereststrokes
-    labeldict = {
-        int(w.id): w.__str__() for w in workouts
-    }
 
     datemapping = {
         w.id: w.date for w in workouts
@@ -838,7 +798,8 @@ def boxplotdata(workouts, options):
 
     script, div = interactive_boxchart(datadf, plotfield,
                                        extratitle=extratitle,
-                                       spmmin=spmmin, spmmax=spmmax, workmin=workmin, workmax=workmax)
+                                       spmmin=spmmin, spmmax=spmmax,
+                                       workmin=workmin, workmax=workmax)
 
     scripta = script.split('\n')[2:-1]
     script = ''.join(scripta)
@@ -847,7 +808,8 @@ def boxplotdata(workouts, options):
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 @permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
 def analysis_view_data(request, userid=0):
@@ -922,7 +884,8 @@ def planrequired_view(request):
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 def create_marker_workouts_view(request, userid=0,
                                 startdate=timezone.now()-timezone.timedelta(days=42),
@@ -936,7 +899,7 @@ def create_marker_workouts_view(request, userid=0,
                                       duplicate=False).order_by('date')
 
     for workout in workouts:
-        w2 = dataprep.check_marker(workout)
+        _ = dataprep.check_marker(workout)
 
     url = reverse('goldmedalscores_view',
                   kwargs={
@@ -946,7 +909,8 @@ def create_marker_workouts_view(request, userid=0,
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 def goldmedalscores_view(request, userid=0,
                          startdate=timezone.now()-timezone.timedelta(days=365),
@@ -1010,13 +974,11 @@ def goldmedalscores_view(request, userid=0,
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 @permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
 def trainingzones_view(request, userid=0):
-
-    is_ajax = request_is_ajax(request)
-
     r = getrequestrower(request, userid=userid)
 
     enddate = timezone.now()
@@ -1126,7 +1088,8 @@ def trainingzones_view_data(request, userid=0):
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 @permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
 def performancemanager_view(request, userid=0, mode='rower',
@@ -1140,10 +1103,8 @@ def performancemanager_view(request, userid=0, mode='rower',
 
     kfitness = therower.kfit
     kfatigue = therower.kfatigue
-    fitnesstest = 20
     metricchoice = 'hrtss'
-    modelchoice = 'tsb'
-    usegoldmedalstandard = False
+
     doform = therower.showfresh
     dofatigue = therower.showfit
 
@@ -1223,8 +1184,6 @@ def ajax_agegrouprecords(request,
                          weightcategory='hwt',
                          userid=0):
 
-    wcdurations = []
-    wcpower = []
     durations = [1, 4, 30, 60]
     distances = [100, 500, 1000, 2000, 5000, 6000, 10000, 21097, 42195]
 
@@ -1320,7 +1279,6 @@ def rankings_view2(request, userid=0,
     if r.birthdate:
         age = calculate_age(r.birthdate)
     else:
-        worldclasspower = None
         age = 0
 
     agerecords = CalcAgePerformance.objects.filter(
@@ -1393,7 +1351,6 @@ def rankings_view2(request, userid=0,
     try:
         r = getrower(theuser)
     except Rower.DoesNotExist:  # pragma: no cover
-        allergworkouts = []
         r = 0
 
     uu = theuser
@@ -1401,7 +1358,6 @@ def rankings_view2(request, userid=0,
     # test to fix bug
     startdate = datetime.datetime.combine(startdate, datetime.time())
     enddate = datetime.datetime.combine(enddate, datetime.time(23, 59, 59))
-    #enddate = enddate+datetime.timedelta(days=1)
     startdate = arrow.get(startdate).datetime
     enddate = arrow.get(enddate).datetime
 
@@ -1469,11 +1425,6 @@ def rankings_view2(request, userid=0,
         paulintercept = res[3]
         p1 = res[4]
         message = res[5]
-        try:
-            testcalc = pd.Series(res[6], dtype='float')*3
-        except TypeError:  # pragma: no cover
-            age = 0
-
     else:
         script = ''
         div = '<p>No ranking pieces found.</p>'
@@ -1582,19 +1533,19 @@ def rankings_view2(request, userid=0,
             pass
 
         # CP model
-        pwr = p1[0]/(1+t/p1[2])
-        pwr += p1[1]/(1+t/p1[3])
+        pwr = p1[0] / (1 + t / p1[2])
+        pwr += p1[1] / (1 + t / p1[3])
 
         if pwr <= 0:  # pragma: no cover
             pwr = 50.
 
-        velo = (pwr/2.8)**(1./3.)
+        velo = (pwr / 2.8)**(1. / 3.)
 
         if np.isnan(velo) or velo <= 0:  # pragma: no cover
             velo = 1.0
 
-        d = t*velo
-        p = 500./velo
+        d = t * velo
+        p = 500. / velo
         a = {'distance': int(d),
              'duration': timedeltaconv(t),
              'pace': timedeltaconv(p),
@@ -1653,7 +1604,7 @@ def rankings_view2(request, userid=0,
 
 @login_required()
 def otecp_toadmin_view(request, theuser=0,
-                       startdate=timezone.now()-datetime.timedelta(days=365),
+                       startdate=timezone.now() - datetime.timedelta(days=365),
                        enddate=timezone.now(),
                        startdatestring="",
                        enddatestring="",
@@ -1710,13 +1661,13 @@ def otecp_toadmin_view(request, theuser=0,
     powerdf.drop_duplicates(subset='Delta', keep='first', inplace=True)
     powerdf.to_csv(csvfilename)
 
-    res = myqueue(queuehigh,
-                  handle_sendemailfile,
-                  'Sander',
-                  'Roosendaal',
-                  'roosendaalsander@gmail.com',
-                  csvfilename,
-                  delete=True)
+    _ = myqueue(queuehigh,
+                handle_sendemailfile,
+                'Sander',
+                'Roosendaal',
+                'roosendaalsander@gmail.com',
+                csvfilename,
+                delete=True)
 
     successmessage = "The CSV file was sent to the site admin per email"
     messages.info(request, successmessage)
@@ -1727,7 +1678,7 @@ def otecp_toadmin_view(request, theuser=0,
 
 @login_required()
 def otwcp_toadmin_view(request, theuser=0,
-                       startdate=timezone.now()-datetime.timedelta(days=365),
+                       startdate=timezone.now() - datetime.timedelta(days=365),
                        enddate=timezone.now(),
                        startdatestring="",
                        enddatestring="",
@@ -1780,13 +1731,13 @@ def otwcp_toadmin_view(request, theuser=0,
     powerdf.drop_duplicates(subset='Delta', keep='first', inplace=True)
     powerdf.to_csv(csvfilename)
 
-    res = myqueue(queuehigh,
-                  handle_sendemailfile,
-                  'Sander',
-                  'Roosendaal',
-                  'roosendaalsander@gmail.com',
-                  csvfilename,
-                  delete=True)
+    _ = myqueue(queuehigh,
+                handle_sendemailfile,
+                'Sander',
+                'Roosendaal',
+                'roosendaalsander@gmail.com',
+                csvfilename,
+                delete=True)
 
     successmessage = "The CSV file was sent to the site admin per email"
     messages.info(request, successmessage)
@@ -1822,7 +1773,7 @@ def agegrouprecordview(request, sex='male', weightcategory='hwt',
             )
         )
     else:
-        duration = int(duration)*60
+        duration = int(duration) * 60
         df = pd.DataFrame(
             list(
                 C2WorldClassAgePerformance.objects.filter(
@@ -1844,11 +1795,6 @@ def agegrouprecordview(request, sex='male', weightcategory='hwt',
                       'the_div': div,
                   })
 
-# alert overview view
-# @user_passes_test(ispromember, login_url="/rowers/paidplans",
-#                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
-#                  redirect_field_name=None)
-
 
 @login_required
 @permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
@@ -1885,7 +1831,8 @@ def alerts_view(request, userid=0):
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 @permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
 def alert_create_view(request, userid=0):
@@ -1926,7 +1873,8 @@ def alert_create_view(request, userid=0):
                     }
                 )
 
-            result, message = create_alert(request.user, r, measured, period=period, emailalert=emailalert,
+            result, message = create_alert(request.user, r, measured,
+                                           period=period, emailalert=emailalert,
                                            reststrokes=reststrokes, workouttype=workouttype,
                                            boattype=boattype,
                                            filter=filters,
@@ -2027,7 +1975,8 @@ def alert_report_view(request, id=0, userid=0, nperiod=0):
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 @permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
 def alert_edit_view(request, id=0, userid=0):
@@ -2100,7 +2049,7 @@ def alert_edit_view(request, id=0, userid=0):
                     }
                 )
 
-            res = alert_add_filters(alert, filters)
+            _ = alert_add_filters(alert, filters)
             messages.info(request, 'Alert was changed')
 
     else:
@@ -2193,7 +2142,8 @@ class AlertDelete(DeleteView):
 
 
 @user_passes_test(ispromember, login_url="/rowers/paidplans",
-                  message="This functionality requires a Pro plan or higher. If you are already a Pro user, please log in to access this functionality",
+                  message="This functionality requires a Pro plan or higher."
+                  " If you are already a Pro user, please log in to access this functionality",
                   redirect_field_name=None)
 @permission_required('rower.is_coach', fn=get_user_by_userid, raise_exception=True)
 def history_view(request, userid=0):
@@ -2216,7 +2166,7 @@ def history_view(request, userid=0):
         activity_enddate = timezone.now()
         activity_enddate = usertimezone.localize(
             timezone.datetime.combine(activity_enddate.date(), time_max))
-        startdate = timezone.now()-datetime.timedelta(days=14)
+        startdate = timezone.now() - datetime.timedelta(days=14)
         activity_startdate = usertimezone.localize(
             timezone.datetime.combine(startdate.date(), time_min))
         sstartdate = activity_startdate.date
@@ -2246,10 +2196,6 @@ def history_view(request, userid=0):
         privacy='visible'
     ).order_by("-startdatetime")
 
-    ids = [w.id for w in g_workouts]
-
-    columns = ['hr', 'power', 'time']
-
     tscript, tdiv = interactive_workouttype_piechart(g_workouts)
 
     totalmeters, totalhours, totalminutes, totalseconds = get_totals(
@@ -2312,19 +2258,19 @@ def history_view(request, userid=0):
         },
     ]
 
-    lastseven = timezone.now()-datetime.timedelta(days=7)
-    lastfourteen = timezone.now()-datetime.timedelta(days=14)
-    last28 = timezone.now()-datetime.timedelta(days=28)
+    lastseven = timezone.now() - datetime.timedelta(days=7)
+    lastfourteen = timezone.now() - datetime.timedelta(days=14)
+    last28 = timezone.now() - datetime.timedelta(days=28)
 
     today = timezone.now()
 
     lastyear = datetime.datetime(
-        year=today.year-1, month=today.month, day=today.day)
+        year=today.year - 1, month=today.month, day=today.day)
 
     firstmay = datetime.datetime(
         year=today.year, month=5, day=1).astimezone(usertimezone)
     if firstmay > today:  # pragma: no cover
-        firstmay = datetime.datetime(year=today.year-1, month=5, day=1)
+        firstmay = datetime.datetime(year=today.year - 1, month=5, day=1)
 
     return render(request, 'history.html',
                   {
@@ -2361,7 +2307,7 @@ def history_view_data(request, userid=0):
     time_min = datetime.time(hour=0, minute=0, second=0)
     time_max = datetime.time(hour=23, minute=59, second=59)
 
-    startdate = timezone.now()-datetime.timedelta(days=14)
+    startdate = timezone.now() - datetime.timedelta(days=14)
     enddate = timezone.now()
     activity_enddate = usertimezone.localize(
         timezone.datetime.combine(enddate.date(), time_max))
@@ -2491,13 +2437,13 @@ def history_view_data(request, userid=0):
 
     # interactive hr pie chart
     if typeselect == 'All':
-        totalseconds = 3600*totalhours+60*totalminutes+totalseconds
+        totalseconds = 3600 * totalhours + 60 * totalminutes + totalseconds
         totalscript, totaldiv = interactive_hr_piechart(df, r, 'All Workouts',
                                                         totalseconds=totalseconds)
     else:
         a_workouts = g_workouts.filter(workouttype=typeselect)
         meters, hours, minutes, seconds = get_totals(a_workouts)
-        totalseconds = 3600*hours+60*minutes+seconds
+        totalseconds = 3600 * hours + 60 * minutes + seconds
         ddf = getsmallrowdata_db(columns, ids=[w.id for w in a_workouts])
 
         try:
diff --git a/tox.ini b/tox.ini
new file mode 100644
index 00000000..dde1660e
--- /dev/null
+++ b/tox.ini
@@ -0,0 +1,3 @@
+[flake8]
+ignore = F405, F403, E722, E226, W504
+max-line-length = 120