2020-10-19 21:08:55

docs/da/017.md

@@ -10,7 +10,7 @@
 
 In [1]:
 
-```
+```py
 a = set()
 type(a)
 
@@ -18,7 +18,7 @@ type(a)
 
 Out[1]:
 
-```
+```py
 set
 ```
 
@@ -26,7 +26,7 @@ set
 
 In [2]:
 
-```
+```py
 a = set([1, 2, 3, 1])
 a
 
@@ -34,7 +34,7 @@ a
 
 Out[2]:
 
-```
+```py
 {1, 2, 3}
 ```
 
@@ -44,7 +44,7 @@ Out[2]:
 
 In [3]:
 
-```
+```py
 a = {1, 2, 3, 1}
 a
 
@@ -52,7 +52,7 @@ a
 
 Out[3]:
 
-```
+```py
 {1, 2, 3}
 ```
 
@@ -60,7 +60,7 @@ Out[3]:
 
 In [4]:
 
-```
+```py
 s = {}
 type(s)
 
@@ -68,7 +68,7 @@ type(s)
 
 Out[4]:
 
-```
+```py
 dict
 ```
 
@@ -78,7 +78,7 @@ dict
 
 In [5]:
 
-```
+```py
 a = {1, 2, 3, 4}
 b = {3, 4, 5, 6}
 
@@ -92,40 +92,40 @@ b = {3, 4, 5, 6}
 
 In [6]:
 
-```
+```py
 a.union(b)
 
 ```
 
 Out[6]:
 
-```
+```py
 {1, 2, 3, 4, 5, 6}
 ```
 
 In [7]:
 
-```
+```py
 b.union(a)
 
 ```
 
 Out[7]:
 
-```
+```py
 {1, 2, 3, 4, 5, 6}
 ```
 
 In [8]:
 
-```
+```py
 a | b
 
 ```
 
 Out[8]:
 
-```
+```py
 {1, 2, 3, 4, 5, 6}
 ```
 
@@ -137,51 +137,51 @@ Out[8]:
 
 In [9]:
 
-```
+```py
 a.intersection(b)
 
 ```
 
 Out[9]:
 
-```
+```py
 {3, 4}
 ```
 
 In [10]:
 
-```
+```py
 b.intersection(a)
 
 ```
 
 Out[10]:
 
-```
+```py
 {3, 4}
 ```
 
 In [11]:
 
-```
+```py
 a & b
 
 ```
 
 Out[11]:
 
-```
+```py
 {3, 4}
 ```
 
 In [12]:
 
-```
+```py
 print(a & b)
 
 ```
 
-```
+```py
 set([3, 4])
 
 ```
@@ -196,27 +196,27 @@ set([3, 4])
 
 In [13]:
 
-```
+```py
 a.difference(b)
 
 ```
 
 Out[13]:
 
-```
+```py
 {1, 2}
 ```
 
 In [14]:
 
-```
+```py
 a - b
 
 ```
 
 Out[14]:
 
-```
+```py
 {1, 2}
 ```
 
@@ -224,27 +224,27 @@ Out[14]:
 
 In [15]:
 
-```
+```py
 b.difference(a)
 
 ```
 
 Out[15]:
 
-```
+```py
 {5, 6}
 ```
 
 In [16]:
 
-```
+```py
 b - a 
 
 ```
 
 Out[16]:
 
-```
+```py
 {5, 6}
 ```
 
@@ -256,40 +256,40 @@ Out[16]:
 
 In [17]:
 
-```
+```py
 a.symmetric_difference(b)
 
 ```
 
 Out[17]:
 
-```
+```py
 {1, 2, 5, 6}
 ```
 
 In [18]:
 
-```
+```py
 b.symmetric_difference(a)
 
 ```
 
 Out[18]:
 
-```
+```py
 {1, 2, 5, 6}
 ```
 
 In [19]:
 
-```
+```py
 a ^ b
 
 ```
 
 Out[19]:
 
-```
+```py
 {1, 2, 5, 6}
 ```
 
@@ -299,7 +299,7 @@ Out[19]:
 
 In [20]:
 
-```
+```py
 a = {1, 2, 3}
 b = {1, 2}
 
@@ -309,27 +309,27 @@ b = {1, 2}
 
 In [21]:
 
-```
+```py
 b.issubset(a)
 
 ```
 
 Out[21]:
 
-```
+```py
 True
 ```
 
 In [22]:
 
-```
+```py
 b <= a
 
 ```
 
 Out[22]:
 
-```
+```py
 True
 ```
 
@@ -337,27 +337,27 @@ True
 
 In [23]:
 
-```
+```py
 a.issuperset(b)
 
 ```
 
 Out[23]:
 
-```
+```py
 True
 ```
 
 In [24]:
 
-```
+```py
 a >= b
 
 ```
 
 Out[24]:
 
-```
+```py
 True
 ```
 
@@ -365,14 +365,14 @@ True
 
 In [25]:
 
-```
+```py
 a <= a
 
 ```
 
 Out[25]:
 
-```
+```py
 True
 ```
 
@@ -380,14 +380,14 @@ True
 
 In [26]:
 
-```
+```py
 a < a
 
 ```
 
 Out[26]:
 
-```
+```py
 False
 ```
 
@@ -397,7 +397,7 @@ False
 
 跟列表的 `append` 方法类似，用来向集合添加单个元素。
 
-```
+```py
 s.add(a) 
 ```
 
@@ -405,7 +405,7 @@ s.add(a)
 
 In [27]:
 
-```
+```py
 t = {1, 2, 3}
 t.add(5)
 t
@@ -414,7 +414,7 @@ t
 
 Out[27]:
 
-```
+```py
 {1, 2, 3, 5}
 ```
 
@@ -422,7 +422,7 @@ Out[27]:
 
 In [28]:
 
-```
+```py
 t.add(3)
 t
 
@@ -430,7 +430,7 @@ t
 
 Out[28]:
 
-```
+```py
 {1, 2, 3, 5}
 ```
 
@@ -438,7 +438,7 @@ Out[28]:
 
 跟列表的`extend`方法类似，用来向集合添加多个元素。
 
-```
+```py
 s.update(seq) 
 ```
 
@@ -446,7 +446,7 @@ s.update(seq)
 
 In [29]:
 
-```
+```py
 t.update([5, 6, 7])
 t
 
@@ -454,13 +454,13 @@ t
 
 Out[29]:
 
-```
+```py
 {1, 2, 3, 5, 6, 7}
 ```
 
 ### `remove` 方法移除单个元素
 
-```
+```py
 s.remove(ob) 
 ```
 
@@ -468,7 +468,7 @@ s.remove(ob)
 
 In [30]:
 
-```
+```py
 t.remove(1)
 t
 
@@ -476,18 +476,18 @@ t
 
 Out[30]:
 
-```
+```py
 {2, 3, 5, 6, 7}
 ```
 
 In [31]:
 
-```
+```py
 t.remove(10)
 
 ```
 
-```
+```py
 ---------------------------------------------------------------------------
 KeyError                                  Traceback (most recent call last)
 <ipython-input-31-3bc25c5e1ff4> in <module>()
@@ -502,39 +502,39 @@ KeyError: 10
 
 In [32]:
 
-```
+```py
 t.pop()
 
 ```
 
 Out[32]:
 
-```
+```py
 {3, 5, 6, 7}
 ```
 
 In [33]:
 
-```
+```py
 print t
 
 ```
 
-```
+```py
 set([3, 5, 6, 7])
 
 ```
 
 In [34]:
 
-```
+```py
 s = set()
 # 报错
 s.pop()
 
 ```
 
-```
+```py
 ---------------------------------------------------------------------------
 KeyError                                  Traceback (most recent call last)
 <ipython-input-34-9f9e06c962e6> in <module>()
@@ -551,21 +551,21 @@ KeyError: 'pop from an empty set'
 
 In [35]:
 
-```
+```py
 t.discard(3)
 
 ```
 
 In [36]:
 
-```
+```py
 t
 
 ```
 
 Out[36]:
 
-```
+```py
 {5, 6, 7}
 ```
 
@@ -573,27 +573,27 @@ Out[36]:
 
 In [37]:
 
-```
+```py
 t.discard(20)
 
 ```
 
 In [38]:
 
-```
+```py
 t
 
 ```
 
 Out[38]:
 
-```
+```py
 {5, 6, 7}
 ```
 
 ### difference_update方法
 
-```
+```py
 a.difference_update(b) 
 ```