bpo-40275: Import locale module lazily in gettext (GH-19905)

Lib/gettext.py

@@ -46,7 +46,6 @@
 # find this format documented anywhere.
 
 
-import locale
 import os
 import re
 import sys
@@ -210,6 +209,7 @@ def func(n):
 
 
 def _expand_lang(loc):
+ import locale
  loc = locale.normalize(loc)
  COMPONENT_CODESET = 1 << 0
  COMPONENT_TERRITORY = 1 << 1
@@ -278,6 +278,7 @@ def lgettext(self, message):
  import warnings
  warnings.warn('lgettext() is deprecated, use gettext() instead',
  DeprecationWarning, 2)
+ import locale
  if self._fallback:
  with warnings.catch_warnings():
  warnings.filterwarnings('ignore', r'.*\blgettext\b.*',
@@ -299,6 +300,7 @@ def lngettext(self, msgid1, msgid2, n):
  import warnings
  warnings.warn('lngettext() is deprecated, use ngettext() instead',
  DeprecationWarning, 2)
+ import locale
  if self._fallback:
  with warnings.catch_warnings():
  warnings.filterwarnings('ignore', r'.*\blngettext\b.*',
@@ -462,6 +464,7 @@ def lgettext(self, message):
  import warnings
  warnings.warn('lgettext() is deprecated, use gettext() instead',
  DeprecationWarning, 2)
+ import locale
  missing = object()
  tmsg = self._catalog.get(message, missing)
  if tmsg is missing:
@@ -476,6 +479,7 @@ def lngettext(self, msgid1, msgid2, n):
  import warnings
  warnings.warn('lngettext() is deprecated, use ngettext() instead',
  DeprecationWarning, 2)
+ import locale
  try:
  tmsg = self._catalog[(msgid1, self.plural(n))]
  except KeyError:
@@ -668,6 +672,7 @@ def ldgettext(domain, message):
  import warnings
  warnings.warn('ldgettext() is deprecated, use dgettext() instead',
  DeprecationWarning, 2)
+ import locale
  codeset = _localecodesets.get(domain)
  try:
  with warnings.catch_warnings():
@@ -695,6 +700,7 @@ def ldngettext(domain, msgid1, msgid2, n):
  import warnings
  warnings.warn('ldngettext() is deprecated, use dngettext() instead',
  DeprecationWarning, 2)
+ import locale
  codeset = _localecodesets.get(domain)
  try:
  with warnings.catch_warnings():