py爬蟲基礎(chǔ)問題請教

smalltom30

怎么按 “零基礎(chǔ)寫py爬蟲” http://www.2cto.com/kf/201210/159597.html
這個操作會報這個錯呢？

>>> import urllib2
>>> request = urllib2.Request(url="www.baidu.com")
>>> result = urllib2.urlopen(request).read()

Traceback (most recent call last):
  File "<pyshell#9>", line 1, in <module>
    result = urllib2.urlopen(request).read()
  File "C:\Python27\lib\urllib2.py", line 127, in urlopen
    return _opener.open(url, data, timeout)
  File "C:\Python27\lib\urllib2.py", line 396, in open
    protocol = req.get_type()
  File "C:\Python27\lib\urllib2.py", line 258, in get_type
    raise ValueError, "unknown url type: %s" % self.__original
ValueError: unknown url type: www.baidu.com
>>> request = urllib2.Request(url="http://www.baidu.com")
>>> result = urllib2.urlopen(request).read()

Traceback (most recent call last):
  File "<pyshell#11>", line 1, in <module>
    result = urllib2.urlopen(request).read()
  File "C:\Python27\lib\urllib2.py", line 127, in urlopen
    return _opener.open(url, data, timeout)
  File "C:\Python27\lib\urllib2.py", line 404, in open
    response = self._open(req, data)
  File "C:\Python27\lib\urllib2.py", line 422, in _open
    '_open', req)
  File "C:\Python27\lib\urllib2.py", line 382, in _call_chain
    result = func(*args)
  File "C:\Python27\lib\urllib2.py", line 1214, in http_open
    return self.do_open(httplib.HTTPConnection, req)
  File "C:\Python27\lib\urllib2.py", line 1184, in do_open
    raise URLError(err)
URLError: <urlopen error [Errno 10061] >

請高手支招，這個跟網(wǎng)絡(luò)有關(guān)系嗎，我打開百度沒問題啊

smalltom30

看了下我的網(wǎng)絡(luò)設(shè)置，居然開了一個代理，不可思議，唉
下面這個在公司環(huán)境下應(yīng)該有用，公司是得經(jīng)過代理上網(wǎng)的
http://stackoverflow.com/questio ... n-http-proxy-python

smalltom30

這個例子也有用：

from urllib import urlopen
from time import ctime
ticks = ('YHOO','EBAY','AMZN')

import csv
URL = 'http://quote.yahoo.com/d/quotes.csv?s=%s&f=sl1c1p2'

print '\nRrices qouted as of:',ctime()
print '\nticker'.ljust(9),'PRICE'.ljust(,'CHG'.ljust(5),'%AGE'
print '----'.ljust(,'----'.ljust(,'----'.ljust(5),'----'
u = urlopen('http://quote.yahoo.com/d/quotes.csv?s=GOOG,EBAY&f=sl1c1p2')

for row in u:
      tick,price,chg,per=row.split(',')
      print eval(tick).ljust(7), \
            ('%.2f' % round(float(price),2)).rjust(7), \
            chg.rjust(6),eval(per.rstrip()).rjust(6)
u.close()


"""
u = urlopen(URL % ','.join(ticks))
for row in csv.DictReader(u):
      print row
f.close()

import csv
u = urlopen ('http://download.finance.yahoo.com/d/quotes.csv?s=GOOG&f=sl1d1t1c1ohgv')
for row in u:
      print row
%s %s % 'abc' 'cde'
round(float(price),2))


"""

smalltom30

http://blog.sina.com.cn/s/blog_7ed3ed3d010146tl.html
這個不錯
在公司代理環(huán)境 也可以得到stock數(shù)據(jù)

smalltom30

中文問題及noteapp編輯問題：http://www.cnblogs.com/rollenholt/archive/2011/08/01/2123889.html

smalltom30

http://jingyan.baidu.com/article/a3aad71aac81e0b1fa009677.html  
Excel批量自動刪除空白行超簡單方法

smalltom30

print '----'.ljust(,'----'.ljust(,'----'.ljust(5),'----'

smalltom30

笑臉其實上是表示 8）

圣西羅門柱

url="http://www.baidu.com"

smalltom30

http://www.jb51.net/article/44070.htm
python paramiko實現(xiàn)ssh遠(yuǎn)程訪問的方法，講解得比較到位