diff --git a/ohmpi/plots.py b/ohmpi/plots.py
index 2acf7d65a56971fc02456d827d157d4ed23b6c65..34df534634b8f5530ff4175ff66f1791f136e096 100644
--- a/ohmpi/plots.py
+++ b/ohmpi/plots.py
@@ -3,7 +3,8 @@ import numpy as np
 from ohmpi.utils import parse_log
 import matplotlib
 
-def plot_exec_log(exec_log,names=None,last_session=True): #TODO: select session id instead of last session (if -1 : last)
+
+def plot_exec_log(exec_log,names=None,last_session=True):  # TODO: select session id instead of last session (if -1 : last)
     time, process_id, tag, msg, session = parse_log(exec_log)
     print(session)
     if last_session:
@@ -29,34 +30,30 @@ def plot_exec_log(exec_log,names=None,last_session=True): #TODO: select session
         for cat in np.unique(category):
             names[cat] = np.array(np.unique(name[category == cat]))
 
-    fig, axarr = plt.subplots(len(names.keys()),sharex=True)
-    print(axarr)
-    if not isinstance(axarr,np.ndarray):
-        print('no')
-        axarr = np.array([axarr])
-    for i,cat in enumerate(names.keys()):
-        print(cat)
-        y=0
-        for j,n in enumerate(names[cat]):
+    fig, ax = plt.subplots(len(names.keys()),sharex=True)
+    if not isinstance(ax,np.ndarray):
+        ax = np.array([ax])
+    for i, cat in enumerate(names.keys()):
+        y = 0
+        for j, n in enumerate(names[cat]):
             cmap = matplotlib.cm.get_cmap('tab20')
             colors = [cmap(c/len(names[cat])) for c in range(len(names[cat]))]
-            event_ids = np.where((name==n) & (category==cat))[0]
-            y+=1
-            axarr[i].set_title(cat)
-            label=True
-            for k,id in enumerate(event_ids[:-1]):
-                # print(state[event_ids[k]])
+            event_ids = np.where((name == n) & (category == cat))[0]
+            y += 1
+            ax[i].set_title(cat)
+            label = True
+            for k, id in enumerate(event_ids[:-1]):
                 if state[event_ids[k]] == 'begin' and state[event_ids[k+1]] == 'end':
                     if label:
-                        axarr[i].fill_betweenx([y,y+1],time[event_ids[k]],time[event_ids[k+1]],color=colors[j],label=n)
+                        ax[i].fill_betweenx([y,y+1],time[event_ids[k]],time[event_ids[k+1]],color=colors[j],label=n)
                         label=False
                     else:
-                        axarr[i].fill_betweenx([y, y + 1], time[event_ids[k]], time[event_ids[k + 1]], color=colors[j])
-        ylabels = names[cat]
-        ylabelpos = np.arange(len(names[cat]))+1.5
+                        ax[i].fill_betweenx([y, y + 1], time[event_ids[k]], time[event_ids[k + 1]], color=colors[j])
+        y_labels = names[cat]
+        y_label_pos = np.arange(len(names[cat]))+1.5
 
-        axarr[i].set_yticks(ylabelpos)
-        axarr[i].set_yticklabels(ylabels)
-        axarr[i].legend()
+        ax[i].set_yticks(y_label_pos)
+        ax[i].set_yticklabels(y_labels)
+        ax[i].legend()
     plt.show()