Python Dictionary to URL Parameters
I am trying to convert a Python dictionary to a string for use as URL parameters. I am sure that there is a better, more Pythonic way of doing this. What is it?
x = ""
for key, val in {'a':'A', 'b':'B'}.items():
x += "%s=%s&" %(key,val)
x = x[:-1]
Solution 1:
Use urllib.urlencode()
. It takes a dictionary of key-value pairs, and converts it into a form suitable for a URL (e.g., key1=val1&key2=val2
).
If you are using Python3, use urllib.parse.urlencode()
If you want to make a URL with repetitive params such as: p=1&p=2&p=3
you have two options:
>>> import urllib
>>> a = (('p',1),('p',2), ('p', 3))
>>> urllib.urlencode(a)
'p=1&p=2&p=3'
or if you want to make a url with repetitive params:
>>> urllib.urlencode({'p': [1, 2, 3]}, doseq=True)
'p=1&p=2&p=3'
Solution 2:
For python 3, the urllib
library has changed a bit, now you have to do:
import urllib
params = {'a':'A', 'b':'B'}
urllib.parse.urlencode(params)