How to Display Decimals with Fixed Two Decimal Places in Python?

Displaying Decimals with Fixed Two Decimal Places Efficiently

When displaying monetary values or other numerical data, it's often desirable to specify a fixed number of decimal places for consistency and readability. For Python Decimal objects, achieving this is straightforward using the format specifications.

Using Format Specifications

The new format specifications provide a concise and efficient way to define the desired representation of your value:

>>> from decimal import Decimal
>>> amount = Decimal("4898489.00")
>>> "{0:.2f}".format(amount)
'4,898,489.00'

In this example, the precision specifier .2f instructs the formatter to display the value with two decimal places.

Readable References

For further understanding and examples, refer to the following resources:

• Python String Format Cookbook: Provides comprehensive examples of the new-style .format() formatting.
• pyformat.info: Compares the old-style % formatting with the new-style .format() formatting.

F-Strings

In Python 3.6 and later, literal string interpolation (f-strings) offers an even more concise syntax:

>>> f"{amount:.2f}"
'4,898,489.00'

By using these techniques, you can effectively and efficiently display Decimals with a fixed number of decimal places.

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