diff --git a/projects/Calculate_age/calculate.py b/projects/Calculate_age/calculate.py
index cdbeb7044..4df52afff 100644
--- a/projects/Calculate_age/calculate.py
+++ b/projects/Calculate_age/calculate.py
@@ -1,4 +1,50 @@
 # -*- coding: utf-8 -*-
+# import time
+# from calendar import isleap
+
+# # judge the leap year
+# def judge_leap_year(year):
+#     if isleap(year):
+#         return True
+#     else:
+#         return False
+
+
+# # returns the number of days in each month
+# def month_days(month, leap_year):
+#     if month in [1, 3, 5, 7, 8, 10, 12]:
+#         return 31
+#     elif month in [4, 6, 9, 11]:
+#         return 30
+#     elif month == 2 and leap_year:
+#         return 29
+#     elif month == 2 and (not leap_year):
+#         return 28
+
+
+# name = input("input your name: ")
+# age = input("input your age: ")
+# localtime = time.localtime(time.time())
+
+# year = int(age)
+# month = year * 12 + localtime.tm_mon
+# day = 0
+
+# begin_year = int(localtime.tm_year) - year
+# end_year = begin_year + year
+
+# # calculate the days
+# for y in range(begin_year, end_year):
+#     if (judge_leap_year(y)):
+#         day = day + 366
+#     else:
+#         day = day + 365
+
+# leap_year = judge_leap_year(localtime.tm_year)
+# for m in range(1, localtime.tm_mon):
+#     day = day + month_days(m, leap_year)
+
+# day = day + localtime.tm_mday
 import time
 from calendar import isleap
 
@@ -9,7 +55,6 @@ def judge_leap_year(year):
     else:
         return False
 
-
 # returns the number of days in each month
 def month_days(month, leap_year):
     if month in [1, 3, 5, 7, 8, 10, 12]:
@@ -21,9 +66,10 @@ def month_days(month, leap_year):
     elif month == 2 and (not leap_year):
         return 28
 
+# Use raw_input instead of input in Python 2
+name = raw_input("input your name: ")
+age = raw_input("input your age: ")
 
-name = input("input your name: ")
-age = input("input your age: ")
 localtime = time.localtime(time.time())
 
 year = int(age)
@@ -35,15 +81,15 @@ def month_days(month, leap_year):
 
 # calculate the days
 for y in range(begin_year, end_year):
-    if (judge_leap_year(y)):
-        day = day + 366
+    if judge_leap_year(y):
+        day += 366
     else:
-        day = day + 365
+        day += 365
 
 leap_year = judge_leap_year(localtime.tm_year)
 for m in range(1, localtime.tm_mon):
-    day = day + month_days(m, leap_year)
+    day += month_days(m, leap_year)
 
-day = day + localtime.tm_mday
-print("%s's age is %d years or " % (name, year), end="")
+day += localtime.tm_mday
+print ("%s's age is %d years or " % (name, year))
 print("%d months or %d days" % (month, day))