bs.find()和bs.findAll()的区别，print（）函数的格式化

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print（）函数

直接打印数据结构的话不会对数据结构内的字符串进行格式化。

bs.find()返回的是一个字符串，print（）可以对其进行格式化

import requestsfrom bs4 import BeautifulSoupr = requests.get("https://www.baidu.com")bs = BeautifulSoup(unicode(r.content,"utf-8"))a =bs.find("a",{"name":"tj_trnews"})print a

结果

geeklee@geeklee-ThinkPad-E420:~/temp$ python ss.py/usr/local/lib/python2.7/dist-packages/bs4/__init__.py:181: UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for this system ("html.parser"). This usually isn't a problem, but if you run this code on another system, or in a different virtual environment, it may use a different parser and behave differently.The code that caused this warning is on line 5 of the file ss.py. To get rid of this warning, change code that looks like this:BeautifulSoup([your markup])to this:BeautifulSoup([your markup], "html.parser")markup_type=markup_type))<a class="mnav" href="http://news.baidu.com" name="tj_trnews">新闻</a>

bs.findAll()返回的是列表，print（）不能对其列表内的字符串进行格式化

import requestsfrom bs4 import BeautifulSoupr = requests.get("https://www.baidu.com")bs = BeautifulSoup(unicode(r.content,"utf-8"))a =bs.findAll("a",{"name":"tj_trnews"})print a

结果

geeklee@geeklee-ThinkPad-E420:~/temp$ python ss.py/usr/local/lib/python2.7/dist-packages/bs4/__init__.py:181: UserWarning: No parser was explicitly specified, so I'm using the best available HTML parser for this system ("html.parser"). This usually isn't a problem, but if you run this code on another system, or in a different virtual environment, it may use a different parser and behave differently.The code that caused this warning is on line 5 of the file ss.py. To get rid of this warning, change code that looks like this:BeautifulSoup([your markup])to this:BeautifulSoup([your markup],"html.parser")markup_type=markup_type))[<a class="mnav" href="http://news.baidu.com" name="tj_trnews">\u65b0\u95fb</a>]

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