Issue #18194: Introduce importlib.util.cache_from_source() and
source_from_cache(), finishing the work introduced in changset
4134:9cacdb9d0c59.
diff --git a/Lib/imp.py b/Lib/imp.py
index d87dffc..1872b29 100644
--- a/Lib/imp.py
+++ b/Lib/imp.py
@@ -16,8 +16,7 @@
# Platform doesn't support dynamic loading.
load_dynamic = None
-from importlib._bootstrap import (cache_from_source, source_from_cache,
- SourcelessFileLoader, _ERR_MSG)
+from importlib._bootstrap import SourcelessFileLoader, _ERR_MSG
from importlib import machinery
from importlib import util
@@ -66,6 +65,38 @@
return sys.implementation.cache_tag
+def cache_from_source(path, debug_override=None):
+ """**DEPRECATED**
+
+ Given the path to a .py file, return the path to its .pyc/.pyo file.
+
+ The .py file does not need to exist; this simply returns the path to the
+ .pyc/.pyo file calculated as if the .py file were imported. The extension
+ will be .pyc unless sys.flags.optimize is non-zero, then it will be .pyo.
+
+ If debug_override is not None, then it must be a boolean and is used in
+ place of sys.flags.optimize.
+
+ If sys.implementation.cache_tag is None then NotImplementedError is raised.
+
+ """
+ return util.cache_from_source(path, debug_override)
+
+
+def source_from_cache(path):
+ """**DEPRECATED**
+
+ Given the path to a .pyc./.pyo file, return the path to its .py file.
+
+ The .pyc/.pyo file does not need to exist; this simply returns the path to
+ the .py file calculated to correspond to the .pyc/.pyo file. If path does
+ not conform to PEP 3147 format, ValueError will be raised. If
+ sys.implementation.cache_tag is None then NotImplementedError is raised.
+
+ """
+ return util.source_from_cache(path)
+
+
def get_suffixes():
warnings.warn('imp.get_suffixes() is deprecated; use the constants '
'defined on importlib.machinery instead',