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Issue #17177: The imp module is pending deprecation.

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To make sure there is no issue with code that is both Python 2 and 3
compatible, there are no plans to remove the module any sooner than
Python 4 (unless the community moves to Python 3 solidly before then).
This commit is contained in:
Brett Cannon 2013-06-16 13:13:40 -04:00
parent 39295e7a55
commit e4f41deccf
15 changed files with 103 additions and 85 deletions
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22
Lib/pkgutil.py
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@ -1,13 +1,13 @@
"""Utilities to support packages."""
from functools import singledispatch as simplegeneric
import imp
import importlib
import importlib.util
import os
import os.path
import sys
from types import ModuleType
from warnings import warn
import warnings
__all__ = [
'get_importer', 'iter_importers', 'get_loader', 'find_loader',
@ -21,7 +21,7 @@ def read_code(stream):
import marshal
magic = stream.read(4)
if magic != imp.get_magic():
if magic != importlib.util.MAGIC_NUMBER:
return None
stream.read(8) # Skip timestamp and size
@ -160,6 +160,13 @@ def _iter_file_finder_modules(importer, prefix=''):
iter_importer_modules.register(
importlib.machinery.FileFinder, _iter_file_finder_modules)
def _import_imp():
global imp
with warnings.catch_warnings():
warnings.simplefilter('ignore', PendingDeprecationWarning)
imp = importlib.import_module('imp')
class ImpImporter:
"""PEP 302 Importer that wraps Python's "classic" import algorithm
@ -172,8 +179,10 @@ class ImpImporter:
"""
def __init__(self, path=None):
warn("This emulation is deprecated, use 'importlib' instead",
global imp
warnings.warn("This emulation is deprecated, use 'importlib' instead",
DeprecationWarning)
_import_imp()
self.path = path
def find_module(self, fullname, path=None):
@ -238,8 +247,9 @@ class ImpLoader:
code = source = None
def __init__(self, fullname, file, filename, etc):
warn("This emulation is deprecated, use 'importlib' instead",
DeprecationWarning)
warnings.warn("This emulation is deprecated, use 'importlib' instead",
DeprecationWarning)
_import_imp()
self.file = file
self.filename = filename
self.fullname = fullname