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Showing content from https://realpython.com/videos/old-school-string-formatting-python/ below:

"Old-School" String Formatting in Python (Video) – Real Python

In this lesson, you’ll get a review of the two old school string formatting methods:

1. % string formatting
2. str.format() method

Here is an example of % string formatting:

>>> name = "Eric"
>>> age = 74
>>> "Hello, %s. You are %s." % (name, age)
'Hello Eric. You are 74.'

You’ll see how using this approach can lead to problems when writing longer strings.

The lesson also covers the str.format method, which is an improvement on % formatting. Here’s the code for the examples used:

>>> "Hello, {}. You are {}.".format(name, age)
'Hello, Eric. You are 74.'

And:

>>> person = {'name': 'Eric', 'age': 74}
>>> "Hello, {name}. You are {age}.".format(name=person['name'], age=person['age'])
'Hello, Eric. You are 74.'

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