builddialectexamples.py源代码分析

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"""Build examples of output of dialect module

This script is used during the build process of "Dive Into Python"

(http://diveintopython.org/) to create examples of the output of the

code in chapter 4 (dialect.py and BaseHTMLProcessor.py).

It takes one argument, the source HTML file to translate. It outputs

chef.html, fudd.html, and olde.html in the same directory as the source.

Safe to run more than once. Output files are silently overridden if

they already exist.

"""

__author__ = "Mark Pilgrim ([e-mail])"

__version__ = "$Revision: 1.2 $"

__date__ = "$Date: 2004/05/05 21:57:19 $"

__copyright__ = "Copyright (c) 2001 Mark Pilgrim"

__license__ = "Python"

import dialect

import sys, os

%导入三个库文件

def translateAndWrite(filename, dialectname):

targetfilename = os.path.join(os.path.split(filename)[0], "%s.html" % dialectname)

%产生一个filename同目录的文件dialectname

fsock = open(targetfilename, "wb")

%打开该文件

fsock.write(dialect.translate(filename, dialectname))

%dialect.translate的作用是定义一个别名文件，然后将filename的内容完全写入dialectname

fsock.close()

%关闭文件操作符

if __name__ == "__main__":

filename = sys.argv[1]

%通过命令行参数获取filename

for dialectname in ("chef", "fudd", "olde"):

translateAndWrite(filename, dialectname)

%调用用户自定义的函数，完成复制文件的操作