Index: /issm/trunk-jpl/src/m/classes/frictionschoof.py
===================================================================
--- /issm/trunk-jpl/src/m/classes/frictionschoof.py	(revision 27172)
+++ /issm/trunk-jpl/src/m/classes/frictionschoof.py	(revision 27173)
@@ -1,4 +1,3 @@
 import numpy as np
-
 from checkfield import checkfield
 from fielddisplay import fielddisplay
@@ -22,5 +21,5 @@
         self.effective_pressure       = np.nan
         self.effective_pressure_limit = 0
-        
+
         nargs = len(args)
         if nargs == 0:
@@ -55,5 +54,5 @@
         self.Cmax = project3d(md, 'vector', self.Cmax, 'type', 'node')
         self.m = project3d(md, 'vector', self.m, 'type', 'element')
-        if self.coupling in[3, 4]:
+        if self.coupling in [3, 4]:
             self.effective_pressure = project3d(md, 'vector', self.effective_pressure, 'type', 'node', 'layer', 1)
         return self