数据缩进貌似已经被机器忽略了。。。
- 下面的例子都是在windows下完成的。
-
- 1,读取文本文件的每行(假定C:根目录下有一个test.txt文件)。
-
- f = open("c:/test.txt")
- while(True):
- str = f.readline()
- if str == "" : break
-
- print str
- f.close()
-
- 2,使用glob模块进行查询指定的excel文件,并使用第三方模块xlrd(需要安装下载http://beauty.run-to.com/TechDocs/Product/xlrd-0.5.2.tgz,先解压,安装时,使用命令行到xlrd解压目录内,使用命令setup.py install进行安装。以下同)解析excel文档。(注:py文件中要是有汉字,比如注释或字符串,那么在文件的头部加上
-
-
- import xlrd
- import types
- import time
- import os
- import glob
-
- def Calc(excelname) :
-
-
- book = xlrd.open_workbook(excelname)
-
- sh = book.sheet_by_index(0)
-
- print excelname + ":"
- for rx in range(sh.nrows) :
- d = sh.cell_value(rowx=rx, colx=0)
- print d
-
-
- if __name__ == "__main__" :
-
-
- for excelname in glob.glob( 'xl*.xls' ) :
- Calc(excelname)
-
- 3,xml的解析。
-
-
-
-
- from xml.sax import make_parser
- from xml.sax import ContentHandler
- import string
-
- class MyHandler(ContentHandler):
-
- def startElement(self,name,attrs):
- self.name = name
- self.content = ""
- def endElement(self,name):
- print self.name + "=" + self.content
- def characters(self,content):
- self.content = content
- ch = MyHandler()
- saxparser = make_parser()
- saxparser.setContentHandler(ch)
- saxparser.parse('test.xml')
-
- 4,获取某个网站的网页内容(你可以通过这个例子写出抓取网络信息的程序)。
- 以下是到sina网站上获取当天的浦发银行的股票信息的代码。
-
- import urllib
- pg = urllib.urlopen('http://hq.sinajs.cn/list=sh600000')
- cont = pg.read()
- print cont
-
- 5,正则表达式的使用。
-
- import re
-
- p = re.compile('[a-z]+\d{3}')
-
- str = "fasfnnhzc123aff;^%^Fsdfg sd"
-
- m = p.match(str)
-
- print m.group()
-
- 6,RPC远程过程调用的例子(分为服务端和客户端代码)。
-
- 这是服务端代码:
- server.py:
-
- import SimpleXMLRPCServer
-
-
- class MyCMS:
- def getVersion(self):
- return "Powerd By Python 0.1a"
-
- cms = MyCMS()
- server = SimpleXMLRPCServer.SimpleXMLRPCServer(("localhost", 8888))
- server.register_instance(cms)
-
- print "Listening on port 8888"
- server.serve_forever()
-
- 这是客户端代码:
- client.py:
-
- import xmlrpclib
-
- server = xmlrpclib.ServerProxy("http://localhost:8888")
-
- version = server.getVersion()
-
- print "version:"+version
-
- 创建文件夹以及判断文件是否存在:
- import os
-
-
-
- os.mkdir('c:/test')
-
- dirFlag = os.path.exists('c:/test')
-
- fileFlag = os.path.exists('c:/test/test.txt')
- 使用PIL图像处理模块:
- import Image, ImageDraw, ImageFont
- import ImageFilter
- import ImageEnhance
- from math import atan, degrees
-
-
- im = Image.open("Blue hills.jpg")
- im.show()
-
-
- nim = im.resize((im.size[0] / 2,im.size[1] / 2) ,Image.BILINEAR)
-
-
- nim.show()
-
-
- nim2 = nim.rotate( 45, Image.BILINEAR )
-
- nim2.show()
-
-
- nim3 = im
- for i in range(2): nim3 = nim3.filter( ImageFilter.BLUR )
- nim3.show()
-
-
-
- text = "Hello Logo!"
-
- img = im
- FONT = "c:/windows/fonts/verdana.ttf"
- watermark = Image.new("RGBA", (im.size[0], im.size[1]))
- draw = ImageDraw.ImageDraw(watermark, "RGBA")
- size = 0
- while True:
- size += 1
- nextfont = ImageFont.truetype(FONT, size)
- nexttextwidth, nexttextheight = nextfont.getsize(text)
- if nexttextwidth+nexttextheight/3 > watermark.size[0]:
- break
- font = nextfont
- textwidth, textheight = nexttextwidth, nexttextheight
-
- draw.setfont(font)
- draw.ink = 255 + 255*255 + 255*255*255
- draw.text(((watermark.size[0]-textwidth)/2,(watermark.size[1]-textheight)/2), text)
- watermark = watermark.rotate(degrees(atan(float(img.size[1])/img.size[0])),Image.BICUBIC)
- mask = watermark.convert("L").point(lambda x: min(x, 55))
- watermark.putalpha(mask)
- img.paste(watermark, None, watermark)
- img.show()
- 简单使用wxpython的一个例子:
-
- import wx
-
- class MyFrame(wx.Frame):
-
- def __init__(self, parent, title):
- wx.Frame.__init__(self, parent, -1, title,
- pos=(150, 150), size=(350, 200))
-
-
-
-
- panel = wx.Panel(self)
-
-
- text = wx.StaticText(panel, -1, "Hello World!")
- text.SetFont(wx.Font(14, wx.SWISS, wx.NORMAL, wx.BOLD))
- text.SetSize(text.GetBestSize())
-
- btn = wx.Button(panel, -1, "Close")
-
-
- self.Bind(wx.EVT_BUTTON, self.OnTimeToClose, btn)
-
-
- sizer = wx.BoxSizer(wx.VERTICAL)
- sizer.Add(text, 0, wx.ALL, 10)
- sizer.Add(btn, 0, wx.ALL, 10)
-
- panel.SetSizer(sizer)
- panel.Layout()
-
- def OnTimeToClose(self, evt):
- print "See ya later!"
- self.Close()
-
-
- class MyApp(wx.App):
- def OnInit(self):
- frame = MyFrame(None, "Simple wxPython App")
- self.SetTopWindow(frame)
-
- frame.Show(True)
- return True
-
- app = MyApp(redirect=True)
- app.MainLoop()