go

jackzhenguo · jackzhenguo · commit 487d04a5fda7 · 2020-08-23T18:01:38.000+08:00
diff --git a/README.md b/README.md
@@ -167,6 +167,6 @@
 | 130 | [groupby多字段分组](md/130.md) | itemgetter,itertools,groupby | V1.0 | ⭐️⭐️⭐️⭐️ |
 | 131 | [itemgetter和key函数](md/131.md) | operator,itemgetter,itertools | V1.0 | ⭐️⭐️⭐️⭐️⭐️ |
 | 132 | [sum函数计算和聚合同时做](md/132.md) | sum,generator | V1.0 | ⭐️⭐️⭐️⭐️⭐️ |
-|  | [获得某天后的1~n天](md/133.md) | Calendar,itermonthdates | V4.0 | ⭐️⭐️⭐️ |
+| 133 | [获得某天后的1~n天](md/133.md) | Calendar,monthrange | V4.0 | ⭐️⭐️⭐️ |
 
 更多例子正在整理发布中......
diff --git a/md/133.md b/md/133.md
@@ -11,15 +11,19 @@ import calendar
 from datetime import date,datetime
 
 def getEverydaySince(year,month,day,n=10):
-    i = 0 
-    while i < n:
-        for d in calendar.Calendar().itermonthdates(year,month):
-            if i >= n:
-                break
-            if d < date(year,month,day): 
-                continue 
-            yield d
-            i += 1
+    i = 0
+    _, days = calendar.monthrange(year, month)
+    while i < n: 
+        d = date(year,month,day)    
+        if day == days:
+            month,day = month+1,0
+            _, days = calendar.monthrange(year, month)
+            if month == 13:
+                year,month = year+1,1
+                _, days = calendar.monthrange(year, month)
+        yield d
+        day += 1
+        i += 1
 ```
 
 测试结果：
