修改保留位数

ctr-56.py

@@ -49,7 +49,7 @@ def ctr_all():
     cover = len(day_all & set(device_id))
     print("当天尾号5或6活跃用户覆盖数：")
     print(cover)
-    cover_percent = cover / len(day_all)
+    cover_percent = format(cover / len(day_all),".3f")
     print("当天尾号5或6活跃用户覆盖率：")
     print(cover_percent)
     sql_click = "select count(cid) from data_feed_click " \
@@ -65,7 +65,7 @@ def ctr_all():
     exp = cursor.fetchone()[0]
     print("曝光数：" + str(exp))
     print("点击率：" + str(click / exp))
-    return len(day_all),cover,cover_percent,click,exp,click / exp
+    return len(day_all),cover,cover_percent,click,exp,format(click/exp,".6f")
 
 
 def ctr():
@@ -85,7 +85,7 @@ def ctr():
     print("实验用户曝光数："+str(exp))
     print("实验用户点击率："+str(click/exp))
 
-    return click,exp,click/exp
+    return click,exp,format(click/exp,".6f")
 
 
 def rate2file():