How Can I Break Long Lines of Code in Python for Better Readability?

Line Breaks in Python: Breaking Up Lengthy Source Code

In Python, encountering lengthy lines of code can be inconvenient. Fortunately, there are techniques to implement line breaks to enhance readability. One common scenario is when concatenating strings requires breaking the line into multiple parts.

To achieve this, you can simply continue the expression on the next line without any issues. For instance, consider the following code:

e = 'a' + 'b' + 'c' + 'd'

To split this code over two lines, you can simply write:

e = 'a' + 'b' + \
    'c' + 'd'

This is known as an implicit line continuation using a backslash ().

In addition, you can use parentheses to create multiple-line expressions. For example:

e = ('1' + '2' + '3' +
    '4' + '5')

The effect can also be achieved using an explicit line break:

e = '1' + '2' + '3' + \
    '4' + '5'

The Python style guide prefers implicit continuation with parentheses, but in certain cases, adding parentheses may not be appropriate.

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