Python——Utilities工具
以下是学习goole PYTHON教程过程中的一些笔记。'#' 后面的是输出，希望你能从中获取你想要的。
Closing Thoughts
a = ['aaaa', 'bb', 'cccc']
a
#['aaaa', 'bb', 'cccc']
result = []
[ len(s)for s in a ]
#
a =
a
#
[ num*num for num in a if num > 2]
#
import os
os.listdir('.')
#['DLLs', 'Doc', 'include', 'Lib', 'libs', 'LICENSE.txt', 'NEWS.txt', 'python.exe', 'pythonw.exe', 'README.txt', 'tcl', 'Tools', 'w9xpopen.exe']
import re
Utilities:URLs and HTTP,Exceptions
try:
f = open(filename)
text = f.read()
print '---', filename
print text
exception IOError:
print 'IO Error', filename
import urllib
uf = urllib.urlopen('http://google.com')
uf.read()
urllib.urlretrieve('http://google.com/intl/en_ALL/images/logo.gif', 'blah.gif')
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