Django, gettext, contexts and comments

i18n.py

from django.utils.translation import ugettext as _
from django.utils.translation import pgettext

# _() means normal translation

_("Hello world")

# Translators: This is a comment
_("Hello world")

# Translators: This is a another comment
_("Hello world")

# pgettext() means translation with context

pgettext("This is a context", "Hello World")

pgettext("This is another context", "Hello World")

result.po

# (...)

#. Translators: This is a comment
#. Translators: This is a another comment
#: i18nstrings/i18n.py:4 i18nstrings/i18n.py:7 i18nstrings/i18n.py:10
msgid "Hello world"
msgstr ""

#: i18nstrings/i18n.py:12
msgctxt "This is a context"
msgid "Hello World"
msgstr ""

#: i18nstrings/i18n.py:14
msgctxt "This is another context"
msgid "Hello World"
msgstr ""