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Issue #13959: Deprecate imp.get_suffixes() for new attributes on

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importlib.machinery that provide the suffix details for import.
The attributes were not put on imp so as to compartmentalize
everything importlib needs for setting up imports in
importlib.machinery.

This also led to an indirect deprecation of inspect.getmoduleinfo() as
it directly returned imp.get_suffix's returned tuple which no longer
makes sense.
This commit is contained in:
Brett Cannon 2012-05-11 12:58:42 -04:00
parent 810c64df8f
commit cb66eb0dec
17 changed files with 160 additions and 69 deletions
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25
Lib/pydoc.py
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@ -53,6 +53,7 @@ Richard Chamberlain, for the first implementation of textdoc.
import builtins
import imp
import importlib.machinery
import inspect
import io
import os
@ -220,20 +221,34 @@ def synopsis(filename, cache={}):
mtime = os.stat(filename).st_mtime
lastupdate, result = cache.get(filename, (None, None))
if lastupdate is None or lastupdate < mtime:
info = inspect.getmoduleinfo(filename)
try:
file = tokenize.open(filename)
except IOError:
# module can't be opened, so skip it
return None
if info and 'b' in info[2]: # binary modules have to be imported
try: module = imp.load_module('__temp__', file, filename, info[1:])
except: return None
binary_suffixes = importlib.machinery.BYTECODE_SUFFIXES[:]
binary_suffixes += importlib.machinery.EXTENSION_SUFFIXES[:]
if any(filename.endswith(x) for x in binary_suffixes):
# binary modules have to be imported
file.close()
if any(filename.endswith(x) for x in
importlib.machinery.BYTECODE_SUFFIXES):
loader = importlib.machinery.SourcelessFileLoader('__temp__',
filename)
else:
loader = importlib.machinery.ExtensionFileLoader('__temp__',
filename)
try:
module = loader.load_module('__temp__')
except:
return None
result = (module.__doc__ or '').splitlines()[0]
del sys.modules['__temp__']
else: # text modules can be directly examined
else:
# text modules can be directly examined
result = source_synopsis(file)
file.close()
cache[filename] = (mtime, result)
return result