Python Web py Getting Started -3-url mapping

This article describes the URL mapping, before we introduce the mapping, we first understand what is the URL? The URL (uniform/universal Resource locator abbreviation, Uniform Resource Locator) is a concise representation of the location and access to resources available on the Internet and is the address of standard resources on the Internet. Each file on the Internet has a unique URL that contains information about the location of the file and how the browser should handle it. Know what is a URL, then URL mapping is good to understand. White words on the basis of the matching rules of the URL to find the corresponding page.

1.URL three kinds of mappings

1 URL exact match, format:/index

Explain, in the browser input http://localhost:8080/index, then will exactly match "/index" such a page.

2 URL fuzzy matching, format:/index\d+

Explanation: This means starting with "/index," followed by a number or a number of URLs such as a URL to match, for example, browser input: http://localhost:8080/index123 or http://localhost:8080/ Index4, this kind of fuzzy matching, generally requires the use of regular expressions.

3 URL with group matching, format/index (\d+)

Explanation: This band match seems to match the above Blur, because adding a bracket outside the regular expression means matching a group.

2. Modify our previous hello.py content to practice URL mapping

Import Web
        
urls = (
	'/index ', ' Index ',
	'/blog/\d+ ', ' blog ',
    '/(. *) ', ' Hello '
)
app = Web.application (URLs, Globals ())

class Hello:        
    def get (self, name): Return
        ' hello ' + name

class index:< C10/>def Get (self): return
		"Index method"

class Blog:
	def get (self): return
		' blog Get method '
	
	def POST (self): return
		' blog POST method '

if __name__ = = "__main__":
    App.run ()

Through the code above, we can see that we write URL mapping to the structure of URLs, the top match is a complete match, the matching result range is very small, the middle is fuzzy match, the matching range is larger, and the third is any match (. *) to represent any character, the result range is larger. This need to maintain such norms, from small to large range.

3. Test run a different URL to verify that the set match is successful

3.1 Full match

3.2 Fuzzy Matching

3.3 Any match