Reference library

Dictionaries & sets

Key–value maps, uniqueness, counting, grouping, and fast lookups.

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Dictionaries & sets easy

How to Serialize a Dictionary to a Query String in Python

Convert a Python dictionary into a URL-encoded query string using the standard library's urllib.parse.urlencode function.

urllib query-string urlencode
Python 
import urllib.parse

def dict_to_query_string(params):
    """Serialize a dictionary to a URL query string."""
    return urllib.parse.urlencode(params)

if __name__ == "__main__":
    data = {
        "name": "Alice Johnson",
        "age": 30,
        "city": "New York",
        "interests": ["coding", "hiking"]
   …
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