python · nascheme · Nov 5, 2017 · Mar 18, 2018 · Mar 18, 2018 · Mar 18, 2018
diff --git a/Lib/_bootlocale.py b/Lib/_bootlocale.py
@@ -4,6 +4,7 @@
 Don't import directly from third-party code; use the `locale` module instead!
 """
 
+__lazy_module__ = True
 import sys
 import _locale
 

diff --git a/Lib/_collections_abc.py b/Lib/_collections_abc.py
@@ -6,6 +6,7 @@
 Unit tests are in test_collections.
 """
 
+__lazy_module__ = True
 from abc import ABCMeta, abstractmethod
 import sys
 

diff --git a/Lib/_compat_pickle.py b/Lib/_compat_pickle.py
@@ -2,6 +2,8 @@
 # Python 3 for the pickle module.  This needed to make pickle streams
 # generated with Python 2 loadable by Python 3.
 
+__lazy_module__ = True
+
 # This is a copy of lib2to3.fixes.fix_imports.MAPPING.  We cannot import
 # lib2to3 and use the mapping defined there, because lib2to3 uses pickle.
 # Thus, this could cause the module to be imported recursively.

diff --git a/Lib/_compression.py b/Lib/_compression.py
@@ -1,5 +1,7 @@
 """Internal classes used by the gzip, lzma and bz2 modules"""
 
+__lazy_module__ = True
+
 import io
 
 

diff --git a/Lib/_sitebuiltins.py b/Lib/_sitebuiltins.py
@@ -8,6 +8,8 @@
 # Note this means this module should also avoid keep things alive in its
 # globals.
 
+__lazy_module__ = True
+
 import sys
 
 class Quitter(object):

diff --git a/Lib/_weakrefset.py b/Lib/_weakrefset.py
@@ -2,6 +2,8 @@
 # This code is separated-out because it is needed
 # by abc.py to load everything else at startup.
 
+__lazy_module__ = True
+
 from _weakref import ref
 
 __all__ = ['WeakSet']

diff --git a/Lib/abc.py b/Lib/abc.py
@@ -3,6 +3,7 @@
 
 """Abstract Base Classes (ABCs) according to PEP 3119."""
 
+__lazy_module__ = True
 
 def abstractmethod(funcobj):
     """A decorator indicating abstract methods.

diff --git a/Lib/argparse.py b/Lib/argparse.py
@@ -61,6 +61,8 @@
 still considered an implementation detail.)
 """
 
+__lazy_module__ = True
+
 __version__ = '1.1'
 __all__ = [
     'ArgumentParser',

diff --git a/Lib/base64.py b/Lib/base64.py
@@ -6,6 +6,8 @@
 # Modified 30-Dec-2003 by Barry Warsaw to add full RFC 3548 support
 # Modified 22-May-2007 by Guido van Rossum to use bytes everywhere
 
+__lazy_module__ = True
+
 import re
 import struct
 import binascii

diff --git a/Lib/bisect.py b/Lib/bisect.py
@@ -1,5 +1,7 @@
 """Bisection algorithms."""
 
+__lazy_module__ = True
+
 def insort_right(a, x, lo=0, hi=None):
     """Insert item x in list a, and keep it sorted assuming a is sorted.
 

diff --git a/Lib/bz2.py b/Lib/bz2.py
@@ -4,6 +4,8 @@
 (de)compression, and functions for one-shot (de)compression.
 """
 
+__lazy_module__ = True
+
 __all__ = ["BZ2File", "BZ2Compressor", "BZ2Decompressor",
            "open", "compress", "decompress"]
 

diff --git a/Lib/codecs.py b/Lib/codecs.py
@@ -7,6 +7,8 @@
 
 """
 
+__lazy_module__ = True
+
 import builtins
 import sys
 

diff --git a/Lib/collections/__init__.py b/Lib/collections/__init__.py
@@ -14,6 +14,8 @@
 
 '''
 
+__lazy_module__ = True
+
 __all__ = ['deque', 'defaultdict', 'namedtuple', 'UserDict', 'UserList',
             'UserString', 'Counter', 'OrderedDict', 'ChainMap']
 

diff --git a/Lib/collections/abc.py b/Lib/collections/abc.py
@@ -1,2 +1,3 @@
+__lazy_module__ = True
 from _collections_abc import *
 from _collections_abc import __all__
diff --git a/Lib/contextlib.py b/Lib/contextlib.py
@@ -1,4 +1,5 @@
 """Utilities for with-statement contexts.  See PEP 343."""
+__lazy_module__ = True
 import abc
 import sys
 import _collections_abc

diff --git a/Lib/copyreg.py b/Lib/copyreg.py
@@ -4,6 +4,8 @@
 C, not for instances of user-defined classes.
 """
 
+__lazy_module__ = True
+
 __all__ = ["pickle", "constructor",
            "add_extension", "remove_extension", "clear_extension_cache"]
 

diff --git a/Lib/datetime.py b/Lib/datetime.py
@@ -4,6 +4,8 @@
 time zone and DST data sources.
 """
 
+__lazy_module__ = True
+
 import time as _time
 import math as _math
 
@@ -2414,15 +2416,16 @@ def _name_from_offset(delta):
     pass
 else:
     # Clean up unused names
-    del (_DAYNAMES, _DAYS_BEFORE_MONTH, _DAYS_IN_MONTH, _DI100Y, _DI400Y,
-         _DI4Y, _EPOCH, _MAXORDINAL, _MONTHNAMES, _build_struct_time,
-         _check_date_fields, _check_int_field, _check_time_fields,
-         _check_tzinfo_arg, _check_tzname, _check_utc_offset, _cmp, _cmperror,
-         _date_class, _days_before_month, _days_before_year, _days_in_month,
-         _format_time, _format_offset, _is_leap, _isoweek1monday, _math,
-         _ord2ymd, _time, _time_class, _tzinfo_class, _wrap_strftime, _ymd2ord,
-         _divide_and_round, _parse_isoformat_date, _parse_isoformat_time,
-         _parse_hh_mm_ss_ff)
+    if 0:
+        del (_DAYNAMES, _DAYS_BEFORE_MONTH, _DAYS_IN_MONTH, _DI100Y, _DI400Y,
+             _DI4Y, _EPOCH, _MAXORDINAL, _MONTHNAMES, _build_struct_time,
+             _check_date_fields, _check_int_field, _check_time_fields,
+             _check_tzinfo_arg, _check_tzname, _check_utc_offset, _cmp, _cmperror,
+             _date_class, _days_before_month, _days_before_year, _days_in_month,
+             _format_time, _format_offset, _is_leap, _isoweek1monday, _math,
+             _ord2ymd, _time, _time_class, _tzinfo_class, _wrap_strftime, _ymd2ord,
+             _divide_and_round, _parse_isoformat_date, _parse_isoformat_time,
+             _parse_hh_mm_ss_ff)
     # XXX Since import * above excludes names that start with _,
     # docstring does not get overwritten. In the future, it may be
     # appropriate to maintain a single module level docstring and

diff --git a/Lib/difflib.py b/Lib/difflib.py
@@ -26,6 +26,8 @@
     For producing HTML side by side comparison with change highlights.
 """
 
+__lazy_module__ = True
+
 __all__ = ['get_close_matches', 'ndiff', 'restore', 'SequenceMatcher',
            'Differ','IS_CHARACTER_JUNK', 'IS_LINE_JUNK', 'context_diff',
            'unified_diff', 'diff_bytes', 'HtmlDiff', 'Match']

diff --git a/Lib/dis.py b/Lib/dis.py
@@ -1,5 +1,7 @@
 """Disassembler of Python byte code into mnemonics."""
 
+__lazy_module__ = True
+
 import sys
 import types
 import collections

diff --git a/Lib/email/__init__.py b/Lib/email/__init__.py
@@ -25,6 +25,8 @@
     ]
 
 
+from . import quoprimime
+
 
 # Some convenience routines.  Don't import Parser and Message as side-effects
 # of importing email since those cascadingly import most of the rest of the

diff --git a/Lib/email/base64mime.py b/Lib/email/base64mime.py
@@ -24,6 +24,8 @@
 module.
 """
 
+__lazy_module__ = True
+
 __all__ = [
     'body_decode',
     'body_encode',

diff --git a/Lib/email/charset.py b/Lib/email/charset.py
@@ -2,6 +2,8 @@
 # Author: Ben Gertzfield, Barry Warsaw
 # Contact: email-sig@python.org
 
+__lazy_module__ = True
+
 __all__ = [
     'Charset',
     'add_alias',

diff --git a/Lib/email/encoders.py b/Lib/email/encoders.py
@@ -2,8 +2,11 @@
 # Author: Barry Warsaw
 # Contact: email-sig@python.org
 
+
 """Encodings and related functions."""
 
+__lazy_module__ = True
+
 __all__ = [
     'encode_7or8bit',
     'encode_base64',

diff --git a/Lib/email/errors.py b/Lib/email/errors.py
@@ -4,6 +4,7 @@
 
 """email package exception classes."""
 
+__lazy_module__ = True
 
 class MessageError(Exception):
     """Base class for errors in the email package."""

diff --git a/Lib/email/header.py b/Lib/email/header.py
@@ -4,6 +4,8 @@
 
 """Header encoding and decoding functionality."""
 
+__lazy_module__ = True
+
 __all__ = [
     'Header',
     'decode_header',

diff --git a/Lib/email/quoprimime.py b/Lib/email/quoprimime.py
@@ -26,6 +26,8 @@
 wrapping issues, use the email.header module.
 """
 
+__lazy_module__ = True
+
 __all__ = [
     'body_decode',
     'body_encode',

diff --git a/Lib/encodings/__init__.py b/Lib/encodings/__init__.py
@@ -28,6 +28,7 @@
 
 """#"
 
+#__lazy_module__ = True
 import codecs
 import sys
 from . import aliases

diff --git a/Lib/encodings/aliases.py b/Lib/encodings/aliases.py
@@ -15,6 +15,9 @@
         aliases have also been added.
 
 """
+
+__lazy_module__ = True
+
 aliases = {
 
     # Please keep this list sorted alphabetically by value !

diff --git a/Lib/encodings/latin_1.py b/Lib/encodings/latin_1.py
@@ -6,6 +6,9 @@
 (c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
 
 """
+
+__lazy_module__ = True
+
 import codecs
 
 ### Codec APIs

diff --git a/Lib/encodings/utf_8.py b/Lib/encodings/utf_8.py
@@ -6,6 +6,9 @@
 (c) Copyright CNRI, All Rights Reserved. NO WARRANTY.
 
 """
+
+__lazy_module__ = True
+
 import codecs
 
 ### Codec APIs

diff --git a/Lib/enum.py b/Lib/enum.py
@@ -1,11 +1,10 @@
+
+#__lazy_module__ = True
+
 import sys
 from types import MappingProxyType, DynamicClassAttribute
 
-# try _collections first to reduce startup cost
-try:
-    from _collections import OrderedDict
-except ImportError:
-    from collections import OrderedDict
+from collections import OrderedDict
 
 
 __all__ = [

diff --git a/Lib/fnmatch.py b/Lib/fnmatch.py
@@ -9,6 +9,9 @@
 The function translate(PATTERN) returns a regular expression
 corresponding to PATTERN.  (It does not compile it.)
 """
+
+__lazy_module__ = True
+
 import os
 import posixpath
 import re

diff --git a/Lib/functools.py b/Lib/functools.py
@@ -9,6 +9,8 @@
 #   Copyright (C) 2006-2013 Python Software Foundation.
 # See C source code for _functools credits/copyright
 
+__lazy_module__ = True
+
 __all__ = ['update_wrapper', 'wraps', 'WRAPPER_ASSIGNMENTS', 'WRAPPER_UPDATES',
            'total_ordering', 'cmp_to_key', 'lru_cache', 'reduce', 'partial',
            'partialmethod', 'singledispatch']

diff --git a/Lib/genericpath.py b/Lib/genericpath.py
@@ -3,6 +3,9 @@
 Do not use directly.  The OS specific modules import the appropriate
 functions from this module themselves.
 """
+
+__lazy_module__ = True
+
 import os
 import stat
 

diff --git a/Lib/gettext.py b/Lib/gettext.py
@@ -45,6 +45,7 @@
 # - Support Solaris .mo file formats.  Unfortunately, we've been unable to
 #   find this format documented anywhere.
 
+__lazy_module__ = True
 
 import locale
 import os

diff --git a/Lib/gzip.py b/Lib/gzip.py
@@ -5,6 +5,8 @@
 
 # based on Andrew Kuchling's minigzip.py distributed with the zlib module
 
+__lazy_module__ = True
+
 import struct, sys, time, os
 import zlib
 import builtins

diff --git a/Lib/hashlib.py b/Lib/hashlib.py
@@ -2,6 +2,8 @@
 #  Licensed to PSF under a Contributor Agreement.
 #
 
+__lazy_module__ = True
+
 __doc__ = """hashlib module - A common interface to many hash functions.
 
 new(name, data=b'', **kwargs) - returns a new hash object implementing the
@@ -247,5 +249,6 @@ def prf(msg, inner=inner, outer=outer):
 
 
 # Cleanup locals()
-del __always_supported, __func_name, __get_hash
-del __py_new, __hash_new, __get_openssl_constructor
+if 0:
+    del __always_supported, __func_name, __get_hash
+    del __py_new, __hash_new, __get_openssl_constructor
diff --git a/Lib/heapq.py b/Lib/heapq.py
@@ -124,6 +124,8 @@
 From all times, sorting has always been a Great Art! :-)
 """
 
+__lazy_module__ = True
+
 __all__ = ['heappush', 'heappop', 'heapify', 'heapreplace', 'merge',
            'nlargest', 'nsmallest', 'heappushpop']
 

diff --git a/Lib/inspect.py b/Lib/inspect.py
@@ -28,6 +28,8 @@
 
 # This module is in the public domain.  No warranties.
 
+__lazy_module__ = True
+
 __author__ = ('Ka-Ping Yee <ping@lfw.org>',
               'Yury Selivanov <yselivanov@sprymix.com>')
 

diff --git a/Lib/io.py b/Lib/io.py
@@ -34,6 +34,8 @@
 """
 # New I/O library conforming to PEP 3116.
 
+__lazy_module__ = True
+
 __author__ = ("Guido van Rossum <guido@python.org>, "
               "Mike Verdone <mike.verdone@gmail.com>, "
               "Mark Russell <mark.russell@zen.co.uk>, "
-Original file line number
+Diff line change
@@ Expand Up / @@ -7,6 +7,8 @@ @@
     """
+    __lazy_module__ = True
     import builtins
     import sys
@@ Expand Down @@