Python Index and Notes

##Design technology

Mix-in:A program design technology used in python program, as a base class or method of a class, can be dynamic changed during the runing time, so presentation of a class can be changed. Mix-in can be used in a general interface.

Library

webbrowser(webrowser.open_new("url"), webbrowser.open_new_tab("url"))

Gevent

Author: Denis Bilenko, E-mail: denis.bilenko@gmail.com,

XML

library

sax

Directory support module os.path os.path.isdir # check the directory exist? os.path.join # use correct sepreator(*) connect paths into one (Used in UNIX) os.makedirs dir name is refered by a varible directory,

Code

Header

from xml.sax.handler import ContentHandler
from xml.sax import parse

IO.Write(Printf in C programming language)

self.out.write(' %s="%s"' % (key, val))
        printf(" %s=%s"   , str1, str2);

Quote

in python: ":"
in c     : "{ }"

Language symbol Operator: Equal, like `if name == 'page': '

Object.attrs

attrs.items, attrs['']

Bug: Type error: coercing to Unicode need string or buffer, instance found