use time.perf_counter() instead of time.clock(), close #92

examples/04_emg_rate.py

@@ -46,7 +46,7 @@ def on_arm_synced(self, event):
     event.device.stream_emg(True)
 
   def on_emg(self, event):
-    t = time.clock()
+    t = time.perf_counter()
     if self.last_time is not None:
       self.times.append(t - self.last_time)
       if len(self.times) > self.n:

myo/utils.py

@@ -29,10 +29,11 @@ class TimeInterval(object):
   A helper class to keep track of a time interval.
   """
 
-  def __init__(self, value, value_on_reset=None):
+  def __init__(self, value, value_on_reset=None, clock=None):
     self.value = value
     self.value_on_reset = value_on_reset
-    self.start = time.clock()
+    self.clock = clock or time.perf_counter
+    self.start = self.clock
 
   def check(self):
     """
@@ -41,15 +42,15 @@ def check(self):
 
     if self.value is None:
       return True
-    return (time.clock() - self.start) >= self.value
+    return (self.clock() - self.start) >= self.value
 
   def reset(self, value=None):
     """
     Resets the start time of the interval to now or the specified value.
     """
 
     if value is None:
-      value = time.clock()
+      value = self.clock()
     self.start = value
     if self.value_on_reset:
       self.value = self.value_on_reset
@@ -74,7 +75,7 @@ def check(self):
 
     if self.value is None:
       return False
-    return (time.clock() - self.start) >= self.value
+    return (self.clock() - self.start) >= self.value
 
   def remainder(self, max_value=None):
     """
@@ -84,7 +85,7 @@ def remainder(self, max_value=None):
 
     if self.value is None:
       return max_value
-    remainder = self.value - (time.clock() - self.start)
+    remainder = self.value - (self.clock() - self.start)
     if remainder < 0.0:
       return 0.0
     elif max_value is not None and remainder > max_value: