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authorMartin v. Löwis <martin@v.loewis.de>2002-04-07 16:29:36 (GMT)
committerMartin v. Löwis <martin@v.loewis.de>2002-04-07 16:29:36 (GMT)
commitd1a3c8117d858c96feef7a1431448cbbcb08a8c3 (patch)
tree19de51e8c5b847d450480a9c8ab926e4a8a14e35 /Lib
parent8ca162f417c6a72faf02831457b4054a73087b78 (diff)
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Move knee.py from Lib/ to Demo/imputil/. Fixes #515745.
Diffstat (limited to 'Lib')
-rw-r--r--Lib/knee.py126
1 files changed, 0 insertions, 126 deletions
diff --git a/Lib/knee.py b/Lib/knee.py
deleted file mode 100644
index 64764da..0000000
--- a/Lib/knee.py
+++ /dev/null
@@ -1,126 +0,0 @@
-"""An Python re-implementation of hierarchical module import.
-
-This code is intended to be read, not executed. However, it does work
--- all you need to do to enable it is "import knee".
-
-(The name is a pun on the klunkier predecessor of this module, "ni".)
-
-"""
-
-import sys, imp, __builtin__
-
-
-# Replacement for __import__()
-def import_hook(name, globals=None, locals=None, fromlist=None):
- parent = determine_parent(globals)
- q, tail = find_head_package(parent, name)
- m = load_tail(q, tail)
- if not fromlist:
- return q
- if hasattr(m, "__path__"):
- ensure_fromlist(m, fromlist)
- return m
-
-def determine_parent(globals):
- if not globals or not globals.has_key("__name__"):
- return None
- pname = globals['__name__']
- if globals.has_key("__path__"):
- parent = sys.modules[pname]
- assert globals is parent.__dict__
- return parent
- if '.' in pname:
- i = pname.rfind('.')
- pname = pname[:i]
- parent = sys.modules[pname]
- assert parent.__name__ == pname
- return parent
- return None
-
-def find_head_package(parent, name):
- if '.' in name:
- i = name.find('.')
- head = name[:i]
- tail = name[i+1:]
- else:
- head = name
- tail = ""
- if parent:
- qname = "%s.%s" % (parent.__name__, head)
- else:
- qname = head
- q = import_module(head, qname, parent)
- if q: return q, tail
- if parent:
- qname = head
- parent = None
- q = import_module(head, qname, parent)
- if q: return q, tail
- raise ImportError, "No module named " + qname
-
-def load_tail(q, tail):
- m = q
- while tail:
- i = tail.find('.')
- if i < 0: i = len(tail)
- head, tail = tail[:i], tail[i+1:]
- mname = "%s.%s" % (m.__name__, head)
- m = import_module(head, mname, m)
- if not m:
- raise ImportError, "No module named " + mname
- return m
-
-def ensure_fromlist(m, fromlist, recursive=0):
- for sub in fromlist:
- if sub == "*":
- if not recursive:
- try:
- all = m.__all__
- except AttributeError:
- pass
- else:
- ensure_fromlist(m, all, 1)
- continue
- if sub != "*" and not hasattr(m, sub):
- subname = "%s.%s" % (m.__name__, sub)
- submod = import_module(sub, subname, m)
- if not submod:
- raise ImportError, "No module named " + subname
-
-def import_module(partname, fqname, parent):
- try:
- return sys.modules[fqname]
- except KeyError:
- pass
- try:
- fp, pathname, stuff = imp.find_module(partname,
- parent and parent.__path__)
- except ImportError:
- return None
- try:
- m = imp.load_module(fqname, fp, pathname, stuff)
- finally:
- if fp: fp.close()
- if parent:
- setattr(parent, partname, m)
- return m
-
-
-# Replacement for reload()
-def reload_hook(module):
- name = module.__name__
- if '.' not in name:
- return import_module(name, name, None)
- i = name.rfind('.')
- pname = name[:i]
- parent = sys.modules[pname]
- return import_module(name[i+1:], name, parent)
-
-
-# Save the original hooks
-original_import = __builtin__.__import__
-original_reload = __builtin__.reload
-
-# Now install our hooks
-__builtin__.__import__ = import_hook
-__builtin__.reload = reload_hook