allow "fake" filenames in findsource (closes #9284)
This allows findsource() to work in doctests.
A patch from Dirkjan Ochtman.
diff --git a/Lib/inspect.py b/Lib/inspect.py
index b0b2d3a..c727530 100644
--- a/Lib/inspect.py
+++ b/Lib/inspect.py
@@ -524,9 +524,13 @@
or code object. The source code is returned as a list of all the lines
in the file and the line number indexes a line in that list. An IOError
is raised if the source code cannot be retrieved."""
- file = getsourcefile(object)
- if not file:
+
+ file = getfile(object)
+ sourcefile = getsourcefile(object)
+ if not sourcefile and file[0] + file[-1] != '<>':
raise IOError('source code not available')
+ file = sourcefile if sourcefile else file
+
module = getmodule(object, file)
if module:
lines = linecache.getlines(file, module.__dict__)
diff --git a/Lib/test/test_inspect.py b/Lib/test/test_inspect.py
index d93ffec..b8c9a18 100644
--- a/Lib/test/test_inspect.py
+++ b/Lib/test/test_inspect.py
@@ -295,6 +295,23 @@
del sys.modules[name]
inspect.getmodule(compile('a=10','','single'))
+ def test_proceed_with_fake_filename(self):
+ '''doctest monkeypatches linecache to enable inspection'''
+ fn, source = '<test>', 'def x(): pass\n'
+ getlines = linecache.getlines
+ def monkey(filename, module_globals=None):
+ if filename == fn:
+ return source.splitlines(True)
+ else:
+ return getlines(filename, module_globals)
+ linecache.getlines = monkey
+ try:
+ ns = {}
+ exec compile(source, fn, 'single') in ns
+ inspect.getsource(ns["x"])
+ finally:
+ linecache.getlines = getlines
+
class TestDecorators(GetSourceBase):
fodderFile = mod2