How do Trailing Commas Create Tuples in Python?

Adding Trailing Commas to Create Tuples

In Python, appending a trailing comma to the end of an expression creates a tuple with the value of that expression.

Example:

abc = 'mystring',
print(abc)

Output:

('mystring',)

Why?

The significance lies in the commas, not the parentheses. According to the Python tutorial, "A tuple consists of a number of values separated by commas."

This means that when you write:

abc = 'mystring',

You are essentially creating a tuple with a single element, namely "mystring." The parentheses are used for disambiguation when commas are used in other contexts, such as nesting or passing tuples as arguments.

Additional Information

Refer to the Python Tutorial section on Tuples and Sequences for a more comprehensive explanation of tuple creation.

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