Python 3.7 has been released! This release includes a number of new features and improvements, including:
- A new f-string syntax for string formatting
- A new walrus operator (
:) for tuple unpacking - A number of performance improvements
For more information, see the Python 3.7 release notes.
New f-string syntax Link to heading
The f-string syntax is a new way to format strings in Python. It is similar to the old format() syntax, but it is more concise and easier to read.
For example, the following code:
>>> print("The value is {}".format(10))
The value is 10
can be written as:
>>> print(f"The value is {10}")
The value is 10
The f-string syntax is also more powerful than the old format() syntax. For example, it can be used to insert variables, expressions, and even other strings into a string.
The code in the blog post should be formatted as follows:
>>> print(f"The value is {10}")
The value is 10
The f-string syntax is enclosed in curly braces ({}), and the variable or expression to be inserted is placed inside the braces. For example, the code print(f"The value is {10}") inserts the value 10 into the string “The value is …”.
The f-string syntax can also be used to insert other strings into a string. For example, the code print(f"The value is {'10'}") inserts the string “10” into the string “The value is …”.
I hope this is helpful!