基于esky实现python应用的自动升级详解

基于

esky

实现

py thon

应用的自动升级

一、

esky

介绍

Esky is an auto-update framework for frozen Python applications. It provides a simple API through which apps can find, fetch and install

updates, and a bootstrapping mechanism that keeps the app safe in the face of failed or partial updates. Updates can also be sent as

differential patches.

Esky is currently capable of freezing apps with py2exe, py2app, cxfreeze and bbfreeze. Adding support for other freezer programs should

be easy; patches will be gratefully accepted.

We are tested and running on Python 2.7 Py2app will work on python3 fine, the other freezers not so much.

Esky

是一个

python

编译程序的自动升级框架，

提供 简单的

api

实现应用的自动更新

（包 括比较版本、

更新版本）

，

esky< /p>

支持

py2exe

，

py2app

，

cxfreeze

以及

bbfreeze

等多种

pyth on

打包框架。

< br>二、

esky

安装及说明

1

、

pip

安装

pip install esky

2

、

esky

说明

< br>

/cloudmatrix/esky/

3

、

esk y

教学视频

/pycon-au-2010/

三、

esky

用法示例

esky

用起来比较简单，我们这里 以常用的基于

wx

的

windows< /p>

应用举例。

wxpython

下有个

reupdate

< br>类，对

wxpython

应用的

esky

升级进行了二次封装。

< /p>

网上有个现成的示范例子，具体网址：

/

2013

/

07

/12

/wxpython-updating-your-application-with-esky/

代码很简单，对其中的关键部分进行注释说明（红色字体部分 ）：

复制代码

# ----------------------------------------

# image_

#

# Created 03-20-2010

#

# Author: Mike Driscoll

# ----------------------------------------

import glob

import os

import wx

from import setuparg1

from import

pub as Publisher

#

申明语句

from reupdate import SoftwareUpdate

import version

####################################### #################################

class ViewerPanel():

#-- -------------------------------------------------- ------------------

def __init__(self, parent):

.__init__(self, parent)

width, height = ySize()

hs = []

tPicture = 0

ictures = 0

axSize = height - 200

ibe(Images, (

imer = (None)

(_TIMER, )

()

#-- -------------------------------------------------- ------------------

def layout(self):

Layout the widgets on the panel

zer = er(AL)

btnSizer = er(NTAL)

img = mage(axSize,axSize)

trl = Bitmap(self, _ANY

,

FromImage(img))

(trl, 0, |, 5)

abel = Text(self, label=

(abel, 0, |, 5)

btnData = [(

(

(

for data in btnData:

label, sizer, handler = data

lder(label, sizer, handler)

(btnSizer, 0, )

er(zer)

#-- -------------------------------------------------- ------------------

def btnBuilder(self, label, sizer, handler):

Builds a button, binds it to an event handler and adds it to a sizer

btn = (self, label=label)

(_BUTTON, handler)

(btn, 0, |, 5)

#-- -------------------------------------------------- ------------------

def loadImage(self, image):

image_name = me(image)

img = (image, _TYPE_ANY)

# scale the image, preserving the aspect ratio

W = th()

H = ght()

if W > H:

NewW = axSize

NewH = axSize * H / W

else:

NewH = axSize

NewW = axSize * W / H

img = (NewW,NewH)

map(FromImage(img))

el(image_name)

h()

ssage(

#-- -------------------------------------------------- ------------------

def nextPicture(self):

Loads the next picture in the directory

if tPicture == ictures-1:

tPicture = 0

else:

tPicture += 1

age(hs[tPicture])

#---------------------------------------- ------------------------------

def previousPicture(self):

Displays the previous picture in the directory

if tPicture == 0:

tPicture = ictures - 1

else:

tPicture -= 1

age(hs[tPicture])

#---------------------------------------- ------------------------------

def update(self, event):

Called when the slideTimer's timer event fires. Loads the next

picture from the folder by calling th nextPicture method

cture()

#-- -------------------------------------------------- ------------------

def updateImages(self, msg):

Updates the picPaths list to contain the current folder's images

hs =

ictures = len(hs)

age(hs[0])

#-- -------------------------------------------------- ------------------

def onNext(self, event):

Calls the nextPicture method

cture()

#---------------------------------------- ------------------------------

def onPrevious(self, event):

Calls the previousPicture method

usPicture()

#---------------------------------------- ------------------------------

def onSlideShow(self, event):

Starts and stops the slideshow

btn = ntObject()

label = el()

if label ==

(3000)

el(

else:

()

el(

### ################################################## ###################

class ViewerFrame():

#-- -------------------------------------------------- ------------------

def __init__(self):

title = 'Image Viewer %s' %(N)

.__init__(self, None, title=title)

panel = ViewerPanel(self)

Path =

ibe(Frame, (

olbar()

= er(AL)

(panel, 1, )

er()

()

(self)

()

#-- -------------------------------------------------- ------------------

def initToolbar(self):

Initialize the toolbar

r = ToolBar()

lBitmapSize((16,16))

open_ico = map(_FILE_OPEN, _TOOLBAR, (16,16))

openTool = pleTool(_ANY

, open_ico,

(_MENU, ectory, openTool)

e()

#-------------- -------------------------------------------------- ------

def onOpenDirectory(self, event):

Opens a DirDialog to allow the user to open a folder with pictures

dlg = log(self,

style=_DEFAULT_STYLE)

if dal() == _OK:

Path = h()

print Path

picPaths = (Path +

print picPaths

ssage(

#-- -------------------------------------------------- ------------------

def resizeFrame(self, msg):

(self)

### ################################################## ###################

#

注意基类是两个