How Can I Effectively Handle Long Lines of Code in Python Using Line Continuation?

Line Breaks and Line Continuation in Python

In Python, when dealing with long lines of code, you may encounter the need to break them into multiple lines for readability or code organization. This process is known as line continuation.

Consider the following code:

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

To write this in two lines, you can simply split the expression using the line continuation operator, a backslash ():

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

However, there are other ways to achieve line continuation, depending on the situation.

Additional Line Continuation Options

• Argument Continuation: You can continue arguments on the next line without using any special operator.

a = dostuff(blahblah1, blahblah2, blahblah3, blahblah4, blahblah5,
            blahblah6, blahblah7)

• Explicit Line Break: You can use an explicit line break before or after the opening parentheses of a statement.

if (a == True
    and b == False):

• Parenthesis Continuation: You can enclose the expression in parentheses and split it across multiple lines.

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

Considerations

The preferred method for line continuation is to use implicit continuation with parentheses, as it is more concise and readable. However, in certain cases, other methods may be more appropriate.

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