To create localized Python applications using `gettext`, you can utilize its translation function to translate strings into different languages based on user preferences or system settings. Here’s an example:
# Import the necessary modules
from gettext import gettext, ngettext # Corrected capitalization of NGetText to ngettext
import os
# Set up translation paths
translation_path = 'translations/'
gettext.bindtextdomain('myapp', os.path.join(translation_path)) # Corrected path.join to os.path.join
gettext.textdomain('myapp')
gettext.install('myapp')
def hello():
return _("Hello World") # Added underscore to indicate that this string should be translated
In the above code, we’re using `bindtextdomain()`, `textdomain()`, and `install()` to set up our translation paths. The first two functions are used to bind a domain name (in this case, ‘myapp’) with a directory path containing translations for that domain. The last function installs the translation catalog in memory so we can use it later on.
Now let’s test out our new module:
# Import the mymodule module
import mymodule
# Print the result of the hello() function from the mymodule module
print(mymodule.hello())
# The above code imports the mymodule module and prints the result of the hello() function from that module.
# The mymodule module contains functions to bind a domain name with a directory path containing translations, and to install the translation catalog in memory.
# The hello() function is used to greet the user and return a welcome message.
This will print “Hallo Welt” if you have set up your translations correctly for German (de). If not, it will fall back to the original string (“Hello World”) in English (en) by default.
To format localized currency using Babel and gettext together, we can use `format_currency` function provided by babel.numbers module:
# Import the necessary modules
from babel.numbers import format_currency # Import the format_currency function from the babel.numbers module
import locale # Import the locale module to set the language and formatting
locale.setlocale(locale.LC_ALL, 'en_US') # Set the locale to English (en_US)
# Define a string to be translated
hello = _("Hello World") # Use the gettext function to mark the string for translation
# Print the translated string
print(hello) # Output: Hello World" if translations are set up correctly for German (de), otherwise it will default to English (en)
# Define a variable for the price
price = 1234567890.12
# Format the price using the format_currency function
formatted_price = format_currency(price, 'USD') # Use the format_currency function to format the price in USD
# Print the formatted price
print("The price is " + formatted_price) # Output: The price is $1,234,567,890.12
In the above code snippet, we’re using `setlocale()` to set up our locale as English (en_US). We can then use `format_currency()` function provided by babel.numbers module and gettext translation function to format localized currency for USD. The output will be in US Dollar format with thousands separator and two decimal places, translated into the user’s preferred language if available.
That’s it! You now know how to use `gettext` and Babel together to create localized Python applications that can handle formatted currency using different languages based on user preferences or system settings.