The urlencode function in Python to build URL query strings of the sharp learning

The urlencode() function in Python

In Python, the urlencode() function is a function in the module that is used to encode a dictionary or a sequence of two-element tuples into a URL query string.

This is often useful when constructing query parameters or encoding data into the x-www-form-urlencoded format, which is a common content type in HTTP POST requests.

usage example

First, you need to import the urlencode function from the module:

from  import urlencode

Now, suppose you have the following dictionary representing the query parameters to be passed to the URL:

data = {
    'name': 'John Doe',
    'age': 28,
    'city': 'New York'
}

Use the urlencode() function to encode this dictionary

encoded_data = urlencode(data)
print(encoded_data)

Output:

name=John+Doe&age=28&city=New+York

As you can see, the key-value pairs in the dictionary are converted to URL-formatted strings, where spaces are replaced with + signs.

Attention:

If the values in a dictionary or sequence are a list or tuple, urlencode() generates a key-value pair for those values where the keys are repeated multiple times. To enable this, you need to pass the True value for the doseq parameter of the urlencode() function.

Example:

data = {
    'tag': ['python', 'django']
}
print(urlencode(data, doseq=True))

Output:

tag=python&tag=django

urlencode() is a function commonly used when working with URLs, constructing query strings, or interacting with web services.

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