What is the syntax for adding a GET parameter to a URL?

问题

I am using Python and Google App Engine.
I need to get access to certain webpage by adding some elements to the url.
What is the syntax for adding a GET parameter to a URL?

回答1:

You put ? in the end of the url. After the ? you put var1=val1&var2=val2& ....

For example, if your raw url (without the get parameters) is http://www.example.com/ and you have two parameters, param1=7 and param2=seven, then the full url should be:

http://www.example.com/?param1=7&param2=seven.

If you want to generate the param1=7&param2=seven in python, you can use a parameter dictionary, like this:

import urllib
parameters = urllib.urlencode({'param1':'7', 'param2':'seven'})

The value of parameters is 'param1=7&param2=seven' so you can append the parameters string to a url like this:

raw_url = 'http://www.example.com/'
url = raw_url + '?' + params

Now the value of url is 'http://www.example.com/?param1=7&param2=seven'.

回答2:

I am fairly certain this has been asked many times before, but the query parameters start with ? and are separated by & like so:

http://www.site.com/script.php?key=value&var=num

回答3:

http://www.foo.com/somepath?keyword1=value1&keyword2=value2&keyword3=value3

来源：https://stackoverflow.com/questions/5767464/what-is-the-syntax-for-adding-a-get-parameter-to-a-url