Beginners Python Flask Development API Interface __python

using Python to access the MySQL database under Windows,

data access is provided externally using the Flask Development API interface.

1, view the Python version python-v
Python 2.7.12:: Anaconda 4.1.1 (64-bit)

2, install driver Mysql-python, download the corresponding version of Python
https://pypi.python.org/pypi/MySQL-python/

3. Check whether the MySQLdb module can be imported normally
Python
Import MySQLdb
Importerror:dll load failed:%1 is not a valid WIN32 application.
Conclusion: The driver version does not correspond to Python, it must be 32 bits corresponding to 32 bits and 64 bits corresponding to 64 bits.
Re-download the non-installed version: Mysql-python-1.2.5.zip
Unpack, enter mysql-python-1.2.5 directory:
Python setup.py Install
Error: Error:microsoft Visual C + + 9.0 is required (unable to find Vcvarsall.bat).
Continue downloading: Microsoft Visual C + + Compiler for Python 2.7
http://www.microsoft.com/en-us/download/details.aspx?id=44266
After you install this compiler, continue with the installation:
Python setup.py Install
Continue the error:
_MYSQL.C: Fatal error C1083:cannot open include file: ' Config-win.h ': No such file or directory
Cause: The associated version of the MySQL connector is inconsistent.
Depressed, why also need MySQL Connector.
Too toss, search a bit, unofficial online, there are 64-bit Mysql-python Download:
http://www.codegood.com/archives/129
After installation, test again:
Python
Import MySQLdb
OK, okay.
Colleagues recommend using Conda to manage the Python development environment, as described below:
Anaconda provides a management tool Conda that can be seen as Pip + virtualenv + PVM (Python Version Manager) + Some of the necessary underlying libraries, a more complete and larger integrated management tool. If you only want to use Conda, you can download the simplified version of Miniconda (Https://conda.io/docs/install/quick.html#linux-miniconda-install), you need anaconda Can install the full version, a total of about 400M, with Aliyun server from the official website to download about 6 hours, but fortunately Tsinghua University tuna Mirror Source: https://mirrors.tuna.tsinghua.edu.cn/anaconda/

4. Installation Flask
Pip Install flask
After installation, test again:
Python
Import Flask
OK, okay.

5, Code

sql.py

#-*-Coding:utf-8-*-
'''
Encapsulation class
'''
Import MySQLdb

Class MyTest (object):
'''
MyTest

' Def __init__ (self, HOST, USER, PASSWD, DB, PORT):
Self.conn = MySQLdb.connect (
Host=host, User=user, passwd=passwd, Db=db, Port=port)
Self.cur = Self.conn.cursor ()

Def getdata (self, SQL):
'''
GetData
'''
result = None
Try
Count = Self.cur.execute (SQL)
info = Self.cur.fetchmany (count)
result = []
For row in info:
Result.append (Row)
return result
Except Mysqldb.error, E:
Return "error:%s"% str (e)
Finally
# The code snippet that can change the scope of a variable is Def, class, Lamda
If Self.cur:
Self.cur.close ()
Self.conn.commit ()
Self.conn.close ()

app.py
# Coding:utf-8
'''
Access the MySQL database using Python under Windows and provide data access using the Flask Development API Interface
'''
From SQL Import MyTest
From flask import flask, jsonify
APP = Flask (__name__)

@APP. Route ('/test ')
def test ():
'''
Routing test
'''
Host, user, passwd = ' 127.0.0.1 ', ' * * * *, ' * * * *
dbname, port = ' Dbdemo ', 800
Instance = MyTest (host, user, passwd, dbname, Port)
result = Instance.getdata ("SELECT * from MYTB limit 0,10")
If not None:
return jsonify (Result)
Else
Return "No Data"

if __name__ = = "__main__":
App.run (host= ' 0.0.0.0 ', port=7777, Debug=true)

TestHttp://127.0.0.1:7777/test
OK.