msgid不能被覆盖，它是翻译的源字符串，但是你可以使用django.utils.translation.pgettext()函数来提供上下文信息：

from django.utils.translation import pgettext

# Use pgettext to specify a custom ID and the original string
print(pgettext("variable_name", "Some Name"))

这将在.po文件中显示为：

msgctxt "variable_name"
msgid "Some Name"
msgstr ""

如果你的字符串需要复数化，有一个django.utils.translation.npgettext()函数：

from django.utils.translation import npgettext

def show_items(count):
    message = npgettext(
        'variable_name',
        'You have one apple',
        'You have {count} apples',
        count
    )
    print(message.format(count=count))

show_items(1) # Output: You have one apple
show_items(3) # Output: You have 3 apples

这将在.po文件中显示为：

msgctxt "variable_name"
msgid "You have one apple"
msgid_plural "You have {count} apples"