From 3a7551e72c9d109a1e6d7e16b310e11b3f6cf9a0 Mon Sep 17 00:00:00 2001
From: syota-itakura <itkrst@gmail.com>
Date: Wed, 2 Sep 2015 19:31:08 +0900
Subject: [PATCH] =?UTF-8?q?=E5=B9=B3=E5=9D=87=E5=87=A6=E7=90=86=E6=99=82?=
 =?UTF-8?q?=E9=96=93=E3=82=92=E8=A8=98=E9=8C=B2=E3=81=99=E3=82=8B?=
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---
 progress_bar.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/progress_bar.py b/progress_bar.py
index e1f5f81..31ae397 100644
--- a/progress_bar.py
+++ b/progress_bar.py
@@ -15,6 +15,9 @@ def __init__(self, max_num, unit_num=1):
         self.current_num = 0
         self.started_at = None
         self.finished_at = None
+        self.updated_at = None
+        self.last_lap = 0
+        self.average_lap = 0
 
     @classmethod
     def iteration(cls, iterable, call_back, unit_num=1):
@@ -44,7 +47,15 @@ def forward(self):
     def back(self):
         self.update(self.current_num - self.unit_num)
 
+    def _lap(self):
+        now = datetime.now()
+        current_lap = (self.updated_at - now).total_seconds()
+        self.average_lap = (self.last_lap + current_lap) / 2
+        self.last_lap = current_lap
+        self.updated_at = now
+
     def update(self, num):
+        self._lap()
         self.current_num = max(0, min(self.max_num, num))
 
     def start(self):