How can I format decimal precision using f-strings in Python?

Formatting Decimal Precision with F-Strings

In Python, f-strings provide a concise option for string formatting. One key feature of f-strings is their ability to control the precision of numbers. To specify the number of digits after the decimal point, you can include a type specifier in the format expression.

Example:

Suppose you want to display a number with 2 decimal places. To achieve this using f-strings, use the following syntax:

<code class="python">"{num:.2f}"</code>

Where:

• num is the number you want to format
• 2 specifies the number of digits after the decimal point

Usage:

Consider the example:

<code class="python">a = 10.1234
formatted_a = f'{a:.2f}'
print(formatted_a)  # Output: 10.12</code>

In this example, formatted_a will have the value "10.12", ensuring the number is displayed with 2 digits after the decimal point.

Note:

This technique is only applicable to f-strings. Other string formatting methods like .format or % offer different syntax for controlling number precision.

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