How to Format a Number as Currency in Python: Converting 188518982.18 to £188,518,982.18

Formatting Currency Values in Python

Formatting numerical values to display currency information is essential for many applications. Python provides a convenient method to convert numbers into formatted currency strings.

Question:

How can I format a number like 188518982.18 to £188,518,982.18 using Python?

Solution:

Python's locale module offers comprehensive features for formatting currency values and other locale-specific information. By leveraging this module, you can achieve the desired formatting. Here's how:

1. Set the Locale: Import the locale module and set the locale to the appropriate region. For instance, to format values in British English format, use:

<code class="python">import locale
locale.setlocale(locale.LC_ALL, 'en_GB')</code>

2. Format the Currency: Use the locale.currency() function to format the number into a currency string. By default, it will group digits using commas:

<code class="python">locale.currency(188518982.18)
# Output: '£188,518,982.18'</code>

3. Adjust Grouping: If you want to customize the grouping of digits, use the grouping parameter. Set it to True to enable digit grouping:

<code class="python">locale.currency(188518982.18, grouping=True)
# Output: '£188,518,982.18'</code>

By utilizing the locale module's powerful formatting capabilities, you can easily convert numerical values into standardized and localized currency strings.

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