diff --git a/binarycpython/utils/functions.py b/binarycpython/utils/functions.py
index b3ee7773d405c2203d3d10d6d772365f9bfc43ab..c4abbc8b0435b429e42bac72ba1d3c7948dfe8dc 100644
--- a/binarycpython/utils/functions.py
+++ b/binarycpython/utils/functions.py
@@ -42,21 +42,21 @@ import py_rinterpolate
 # Unsorted
 ########################################################
 
-def mem_use(self):
+def mem_use():
     """
     Return current process memory use in MB. (Takes no arguments) Note: this is per-thread only.
     """
 
     return resource.getrusage(resource.RUSAGE_SELF).ru_maxrss / 1024.0
 
-def trem(dt,count,dn,n):
+def trem(dt, count, dn, n):
     """
     Estimate time remaining (seconds) given a differential time and count (i.e. progress = $count/$n). $dt is the time since the last call, $count is the current progress count, $dn is the number run since the last call, and $n is the total number required.
     """
     tpr = dt / max(1,dn)
     etasecs = tpr * (n - count)
-    (eta,units) = conv_time_units(etasecs)
-    return (eta,units,tpr,etasecs)
+    (eta, units) = conv_time_units(etasecs)
+    return (eta, units, tpr, etasecs)
 
 def conv_time_units(t):
     """