2020-10-19 21:08:55

docs/da/069.md

@@ -4,7 +4,7 @@
 
 In [1]:
 
-```
+```py
 import sqlite3 as db
 
 ```
@@ -13,14 +13,14 @@ import sqlite3 as db
 
 In [2]:
 
-```
+```py
 connection = db.connect("my_database.sqlite")
 
 ```
 
 不同的数据库有着不同的连接方法，例如 cx-oracle 数据库的链接方式为：
 
-```
+```py
 connection = db.connect(username, password, host, port,  'XE') 
 ```
 
@@ -28,7 +28,7 @@ connection = db.connect(username, password, host, port,  'XE')
 
 In [3]:
 
-```
+```py
 cursor = connection.cursor()
 cursor.execute("""CREATE TABLE IF NOT EXISTS orders(
  order_id TEXT PRIMARY KEY,
@@ -46,7 +46,7 @@ connection.commit()
 
 In [4]:
 
-```
+```py
 orders = [
           ("A0002","2013-12-01","MSFT",1500,167.5),
           ("A0003","2013-12-02","GOOG",1500,167.5)
@@ -59,7 +59,7 @@ connection.commit()
 
 cx-oracle 数据库使用不同的方式：
 
-```
+```py
 cursor.executemany("""INSERT INTO orders VALUES
 (:order_id, :date, :symbol, :quantity, :price)""",
 orders) 
@@ -69,20 +69,20 @@ orders)
 
 In [5]:
 
-```
+```py
 db.paramstyle
 
 ```
 
 Out[5]:
 
-```
+```py
 'qmark'
 ```
 
 在 `query` 语句执行之后，我们需要进行 `commit`，否则数据库将不会接受这些变化，如果想撤销某个 `commit`，可以使用 `rollback()` 方法撤销到上一次 `commit()` 的结果：
 
-```
+```py
 try:
     ... # perform some operations
 except:
@@ -96,7 +96,7 @@ else:
 
 In [6]:
 
-```
+```py
 stock = 'MSFT'
 cursor.execute("""SELECT *
  FROM orders
@@ -107,7 +107,7 @@ for row in cursor:
 
 ```
 
-```
+```py
 (u'A0002', u'2013-12-01', u'MSFT', 1500, 167.5)
 
 ```
@@ -116,7 +116,7 @@ for row in cursor:
 
 In [7]:
 
-```
+```py
 stock = 'AAPL'
 cursor.execute("""SELECT *
  FROM orders
@@ -128,7 +128,7 @@ cursor.fetchall()
 
 Out[7]:
 
-```
+```py
 [(u'A0001', u'2013-12-01', u'AAPL', 1000, 203.4)]
 ```
 
@@ -136,7 +136,7 @@ Out[7]:
 
 In [8]:
 
-```
+```py
 cursor.close()
 connection.close()