标签：空格 ref https values art pytho request seq should
2.1. The main parts of URLs
A full BNF description of the URL syntax is given in Section 5.
In general, URLs are written as follows:
<scheme>:<scheme-specific-part>
A URL contains the name of the scheme being used (<scheme>) followed
by a colon and then a string (the <scheme-specific-part>) whose
interpretation depends on the scheme.
Scheme names consist of a sequence of characters. The lower case
letters "a"--"z", digits, and the characters plus ("+"), period
("."), and hyphen ("-") are allowed. For resiliency, programs
interpreting URLs should treat upper case letters as equivalent to
lower case in scheme names (e.g., allow "HTTP" as well as "http").
注意字母不区分大小写
1 >>> import urllib 2 >>> url = ‘http://web page.com‘ 3 >>> url_en = urllib.quote(url) #空格编码为“%20” 4 >>> url_plus = urllib.quote_plus(url) #空格编码为“+” 5 >>> url_en_twice = urllib.quote(url_en) 6 >>> url 7 ‘http://web page.com‘ 8 >>> url_en 9 ‘http%3A//web%20page.com‘ 10 >>> url_plus 11 ‘http%3A%2F%2Fweb+page.com‘ 12 >>> url_en_twice 13 ‘http%253A//web%2520page.com‘ #出现%25说明是二次编码 14 #相应解码 15 >>> urllib.unquote(url_en) 16 ‘http://web page.com‘ 17 >>> urllib.unquote_plus(url_plus) 18 ‘http://web page.com‘
1 >>> import urllib 2 >>> url_zh = u‘http://movie.douban.com/tag/美国‘ 3 >>> url_zh_en = urllib.quote(url_zh.encode(‘utf-8‘)) #参数为string 4 >>> url_zh_en 5 ‘http%3A//movie.douban.com/tag/%E7%BE%8E%E5%9B%BD‘ 6 >>> print urllib.unquote(url_zh_en).decode(‘utf-8‘) 7 http://movie.douban.com/tag/美国
1 >>> import urllib 2 >>> url = ‘http://web page.com‘ 3 >>> url_en = urllib.parse.quote(url) #注意是urllib.parse.quote 4 >>> url_plus = urllib.parse.quote_plus(url) 5 >>> url_en 6 ‘http%3A//web%20page.com‘ 7 >>> url_plus 8 ‘http%3A%2F%2Fweb+page.com‘ 9 >>> urllib.parse.unquote(url_en) 10 ‘http://web page.com‘ 11 >>> urllib.parse.unquote_plus(url_plus) 12 ‘http://web page.com‘
1 >>> import urllib 2 >>> url_zh = ‘http://movie.douban.com/tag/美国‘ 3 >>> url_zh_en = urllib.parse.quote(url_zh) 4 >>> url_zh_en 5 ‘http%3A//movie.douban.com/tag/%E7%BE%8E%E5%9B%BD‘ 6 >>> urllib.parse.unquote(url_zh_en) 7 ‘http://movie.douban.com/tag/美国‘
1 >>> help(urllib.urlencode) 2 Help on function urlencode in module urllib: 3 4 urlencode(query, doseq=0) 5 Encode a sequence of two-element tuples or dictionary into a URL query string. 6 7 If any values in the query arg are sequences and doseq is true, each 8 sequence element is converted to a separate parameter. 9 10 If the query arg is a sequence of two-element tuples, the order of the 11 parameters in the output will match the order of parameters in the 12 input. 13 14 >>>
标签：空格 ref https values art pytho request seq should
原文地址：http://www.cnblogs.com/my8100/p/7002876.html
