format map function in python
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python's format_map() function is a powerful tool for string formatting, introduced in python 3.2. it works similarly to the format() method but accepts a mapping object as its parameter. this mapping object can be a dictionary or any other object that supports the key-value pair interface. format_map() replaces placeholders in a string with corresponding values from the mapping object. in this tutorial, we'll explore how to use format_map() effectively with code examples.
the syntax for the format_map() function is as follows:
here, string is the string containing placeholder(s) and mapping is the mapping object that contains the values to substitute for the placeholders.
let's dive into some examples to understand how format_map() works.
output:
in this example, format_map() replaces the placeholders {name} and {age} in the template string with the corresponding values from the person dictionary.
you can use custom objects as mapping objects for format_map(). let's see an example:
output:
in this example, we use the vars() function to convert the object attributes into a dictionary, which serves as the mapping object for format_map().
python's format_map() function provides a convenient way to perform string formatting using a mapping object. it offers flexibility in substituting placeholders with values from dictionaries or custom objects. by understanding its usage and syntax, you can effectively utilize format_map() in your python projects for string formatting needs.
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