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wylloong
TinyPrograms
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AccessSQLitebyPython
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# -*- coding:utf8 -*-
'''
Author:Wang Yanlong
Date: 2017-08-16
All rights reserved.
Distributed under the BSD license.
References:
https://docs.python.org/2/library/sqlite3.html (English)
http://www.runoob.com/sqlite/sqlite-python.html (Chinese)
You can get original data in https://github.com/wylloong/TinyPrograms/blob/master/ARPA.db
'''
import sqlite3 as db
# 从SQLite文件中读取数据
def readFronSqllite(db_path,exectCmd):
conn = db.connect(db_path) # 该 API 打开一个到 SQLite 数据库文件 database 的链接,如果数据库成功打开,则返回一个连接对象
cursor=conn.cursor() # 该例程创建一个 cursor,将在 Python 数据库编程中用到。
conn.row_factory=db.Row # 可访问列信息
cursor.execute(exectCmd) #该例程执行一个 SQL 语句
rows=cursor.fetchall() #该例程获取查询结果集中所有(剩余)的行,返回一个列表。当没有可用的行时,则返回一个空的列表。
return rows
#print(rows[0][2]) # 选择某一列数据
# 解析ARPA 单帧信息
def readfromAppaFrame(ARPAFrame):
subARPA=ARPAFrame.split(',')
print(subARPA)
if __name__=="__main__":
rows=readFronSqllite('E://ARPA.db',"select ARPA from ARPAInfo")
readLines=10010
lineIndex=10000
while lineIndex<readLines:
row=rows[lineIndex] # 获取某一行的数据,类型是tuple
content="".join(row) #tuple转字符串
readfromAppaFrame(content) # 解析ARPA数据
lineIndex+=1
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