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-rwxr-xr-xLib/pydoc.py280
1 files changed, 147 insertions, 133 deletions
diff --git a/Lib/pydoc.py b/Lib/pydoc.py
index 5f4cc1c..95e82b3 100755
--- a/Lib/pydoc.py
+++ b/Lib/pydoc.py
@@ -53,36 +53,6 @@ from string import expandtabs, find, join, lower, split, strip, rfind, rstrip
# --------------------------------------------------------- common routines
-def synopsis(filename, cache={}):
- """Get the one-line summary out of a module file."""
- mtime = os.stat(filename)[stat.ST_MTIME]
- lastupdate, result = cache.get(filename, (0, None))
- if lastupdate < mtime:
- info = inspect.getmoduleinfo(filename)
- file = open(filename)
- if info and 'b' in info[2]: # binary modules have to be imported
- try: module = imp.load_module(info[0], file, filename, info[1:])
- except: return None
- result = split(module.__doc__ or '', '\n')[0]
- else: # text modules can be directly examined
- line = file.readline()
- while line[:1] == '#' or not strip(line):
- line = file.readline()
- if not line: break
- line = strip(line)
- if line[:4] == 'r"""': line = line[1:]
- if line[:3] == '"""':
- line = line[3:]
- if line[-1:] == '\\': line = line[:-1]
- while not strip(line):
- line = file.readline()
- if not line: break
- result = strip(split(line, '"""')[0])
- else: result = None
- file.close()
- cache[filename] = (mtime, result)
- return result
-
def pathdirs():
"""Convert sys.path into a list of absolute, existing, unique paths."""
dirs = []
@@ -116,12 +86,11 @@ def classname(object, modname):
name = object.__module__ + '.' + name
return name
-def isconstant(object):
- """Check if an object is of a type that probably means it's a constant."""
- return type(object) in [
- types.FloatType, types.IntType, types.ListType, types.LongType,
- types.StringType, types.TupleType, types.TypeType,
- hasattr(types, 'UnicodeType') and types.UnicodeType or 0]
+def isdata(object):
+ """Check if an object is of a type that probably means it's data."""
+ return not (inspect.ismodule(object) or inspect.isclass(object) or
+ inspect.isroutine(object) or inspect.isframe(object) or
+ inspect.istraceback(object) or inspect.iscode(object))
def replace(text, *pairs):
"""Do a series of global replacements on a string."""
@@ -156,6 +125,46 @@ def allmethods(cl):
methods[key] = getattr(cl, key)
return methods
+# ----------------------------------------------------- module manipulation
+
+def ispackage(path):
+ """Guess whether a path refers to a package directory."""
+ if os.path.isdir(path):
+ for ext in ['.py', '.pyc', '.pyo']:
+ if os.path.isfile(os.path.join(path, '__init__' + ext)):
+ return 1
+
+def synopsis(filename, cache={}):
+ """Get the one-line summary out of a module file."""
+ mtime = os.stat(filename)[stat.ST_MTIME]
+ lastupdate, result = cache.get(filename, (0, None))
+ if lastupdate < mtime:
+ info = inspect.getmoduleinfo(filename)
+ file = open(filename)
+ 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
+ result = split(module.__doc__ or '', '\n')[0]
+ del sys.modules['__temp__']
+ else: # text modules can be directly examined
+ line = file.readline()
+ while line[:1] == '#' or not strip(line):
+ line = file.readline()
+ if not line: break
+ line = strip(line)
+ if line[:4] == 'r"""': line = line[1:]
+ if line[:3] == '"""':
+ line = line[3:]
+ if line[-1:] == '\\': line = line[:-1]
+ while not strip(line):
+ line = file.readline()
+ if not line: break
+ result = strip(split(line, '"""')[0])
+ else: result = None
+ file.close()
+ cache[filename] = (mtime, result)
+ return result
+
class ErrorDuringImport(Exception):
"""Errors that occurred while trying to import something to document it."""
def __init__(self, filename, (exc, value, tb)):
@@ -189,12 +198,49 @@ def importfile(path):
file.close()
return module
-def ispackage(path):
- """Guess whether a path refers to a package directory."""
- if os.path.isdir(path):
- for ext in ['.py', '.pyc', '.pyo']:
- if os.path.isfile(os.path.join(path, '__init__' + ext)):
- return 1
+def safeimport(path, forceload=0, cache={}):
+ """Import a module; handle errors; return None if the module isn't found.
+
+ If the module *is* found but an exception occurs, it's wrapped in an
+ ErrorDuringImport exception and reraised. Unlike __import__, if a
+ package path is specified, the module at the end of the path is returned,
+ not the package at the beginning. If the optional 'forceload' argument
+ is 1, we reload the module from disk (unless it's a dynamic extension)."""
+ if forceload and sys.modules.has_key(path):
+ # This is the only way to be sure. Checking the mtime of the file
+ # isn't good enough (e.g. what if the module contains a class that
+ # inherits from another module that has changed?).
+ if path not in sys.builtin_module_names:
+ # Python never loads a dynamic extension a second time from the
+ # same path, even if the file is changed or missing. Deleting
+ # the entry in sys.modules doesn't help for dynamic extensions,
+ # so we're not even going to try to keep them up to date.
+ info = inspect.getmoduleinfo(sys.modules[path].__file__)
+ if info[3] != imp.C_EXTENSION:
+ cache[path] = sys.modules[path] # prevent module from clearing
+ del sys.modules[path]
+ try:
+ module = __import__(path)
+ except:
+ # Did the error occur before or after the module was found?
+ (exc, value, tb) = info = sys.exc_info()
+ if sys.modules.has_key(path):
+ # An error occured while executing the imported module.
+ raise ErrorDuringImport(sys.modules[path].__file__, info)
+ elif exc is SyntaxError:
+ # A SyntaxError occurred before we could execute the module.
+ raise ErrorDuringImport(value.filename, info)
+ elif exc is ImportError and \
+ split(lower(str(value)))[:2] == ['no', 'module']:
+ # The module was not found.
+ return None
+ else:
+ # Some other error occurred during the importing process.
+ raise ErrorDuringImport(path, sys.exc_info())
+ for part in split(path, '.')[1:]:
+ try: module = getattr(module, part)
+ except AttributeError: return None
+ return module
# ---------------------------------------------------- formatter base class
@@ -221,7 +267,8 @@ class HTMLRepr(Repr):
"""Class for safely making an HTML representation of a Python object."""
def __init__(self):
Repr.__init__(self)
- self.maxlist = self.maxtuple = self.maxdict = 10
+ self.maxlist = self.maxtuple = 20
+ self.maxdict = 10
self.maxstring = self.maxother = 100
def escape(self, text):
@@ -344,12 +391,11 @@ TT { font-family: lucida console, lucida typewriter, courier }
def classlink(self, object, modname):
"""Make a link for a class."""
- name = classname(object, modname)
- if sys.modules.has_key(object.__module__) and \
- getattr(sys.modules[object.__module__], object.__name__) is object:
+ name, module = object.__name__, sys.modules.get(object.__module__)
+ if hasattr(module, name) and getattr(module, name) is object:
return '<a href="%s.html#%s">%s</a>' % (
- object.__module__, object.__name__, name)
- return name
+ module.__name__, name, classname(object, modname))
+ return classname(object, modname)
def modulelink(self, object):
"""Make a link for a module."""
@@ -475,9 +521,10 @@ TT { font-family: lucida console, lucida typewriter, courier }
funcs.append((key, value))
fdict[key] = '#-' + key
if inspect.isfunction(value): fdict[value] = fdict[key]
- constants = []
- for key, value in inspect.getmembers(object, isconstant):
- constants.append((key, value))
+ data = []
+ for key, value in inspect.getmembers(object, isdata):
+ if key not in ['__builtins__', '__doc__']:
+ data.append((key, value))
doc = self.markup(getdoc(object), self.preformat, fdict, cdict)
doc = doc and '<tt>%s</tt>' % doc
@@ -518,12 +565,12 @@ TT { font-family: lucida console, lucida typewriter, courier }
contents.append(self.document(value, key, name, fdict, cdict))
result = result + self.bigsection(
'Functions', '#ffffff', '#eeaa77', join(contents))
- if constants:
+ if data:
contents = []
- for key, value in constants:
+ for key, value in data:
contents.append(self.document(value, key))
result = result + self.bigsection(
- 'Constants', '#ffffff', '#55aa55', join(contents, '<br>'))
+ 'Data', '#ffffff', '#55aa55', join(contents, '<br>\n'))
if hasattr(object, '__author__'):
contents = self.markup(str(object.__author__), self.preformat)
result = result + self.bigsection(
@@ -665,7 +712,8 @@ class TextRepr(Repr):
"""Class for safely making a text representation of a Python object."""
def __init__(self):
Repr.__init__(self)
- self.maxlist = self.maxtuple = self.maxdict = 10
+ self.maxlist = self.maxtuple = 20
+ self.maxdict = 10
self.maxstring = self.maxother = 100
def repr1(self, x, level):
@@ -754,9 +802,10 @@ class TextDoc(Doc):
for key, value in inspect.getmembers(object, inspect.isroutine):
if inspect.isbuiltin(value) or inspect.getmodule(value) is object:
funcs.append((key, value))
- constants = []
- for key, value in inspect.getmembers(object, isconstant):
- constants.append((key, value))
+ data = []
+ for key, value in inspect.getmembers(object, isdata):
+ if key not in ['__builtins__', '__doc__']:
+ data.append((key, value))
if hasattr(object, '__path__'):
modpkgs = []
@@ -785,11 +834,11 @@ class TextDoc(Doc):
contents.append(self.document(value, key, name))
result = result + self.section('FUNCTIONS', join(contents, '\n'))
- if constants:
+ if data:
contents = []
- for key, value in constants:
+ for key, value in data:
contents.append(self.docother(value, key, name, 70))
- result = result + self.section('CONSTANTS', join(contents, '\n'))
+ result = result + self.section('DATA', join(contents, '\n'))
if hasattr(object, '__version__'):
version = str(object.__version__)
@@ -903,13 +952,15 @@ def getpager():
return plainpager
if os.environ.has_key('PAGER'):
if sys.platform == 'win32': # pipes completely broken in Windows
- return lambda a: tempfilepager(a, os.environ['PAGER'])
+ return lambda text: tempfilepager(plain(text), os.environ['PAGER'])
+ elif os.environ.get('TERM') in ['dumb', 'emacs']:
+ return lambda text: pipepager(plain(text), os.environ['PAGER'])
else:
- return lambda a: pipepager(a, os.environ['PAGER'])
+ return lambda text: pipepager(text, os.environ['PAGER'])
if sys.platform == 'win32':
- return lambda a: tempfilepager(a, 'more <')
+ return lambda text: tempfilepager(plain(text), 'more <')
if hasattr(os, 'system') and os.system('less 2>/dev/null') == 0:
- return lambda a: pipepager(a, 'less')
+ return lambda text: pipepager(text, 'less')
import tempfile
filename = tempfile.mktemp()
@@ -922,6 +973,10 @@ def getpager():
finally:
os.unlink(filename)
+def plain(text):
+ """Remove boldface formatting from text."""
+ return re.sub('.\b', '', text)
+
def pipepager(text, cmd):
"""Page through text by feeding it to another program."""
pipe = os.popen(cmd, 'w')
@@ -943,10 +998,6 @@ def tempfilepager(text, cmd):
finally:
os.unlink(filename)
-def plain(text):
- """Remove boldface formatting from text."""
- return re.sub('.\b', '', text)
-
def ttypager(text):
"""Page through text on a text terminal."""
lines = split(plain(text), '\n')
@@ -1010,49 +1061,12 @@ def describe(thing):
return 'instance of ' + thing.__class__.__name__
return type(thing).__name__
-def freshimport(path, cache={}):
- """Import a module freshly from disk, making sure it's up to date."""
- if sys.modules.has_key(path):
- # This is the only way to be sure. Checking the mtime of the file
- # isn't good enough (e.g. what if the module contains a class that
- # inherits from another module that has changed?).
- if path not in sys.builtin_module_names:
- # Python never loads a dynamic extension a second time from the
- # same path, even if the file is changed or missing. Deleting
- # the entry in sys.modules doesn't help for dynamic extensions,
- # so we're not even going to try to keep them up to date.
- info = inspect.getmoduleinfo(sys.modules[path].__file__)
- if info[3] != imp.C_EXTENSION:
- del sys.modules[path]
- try:
- module = __import__(path)
- except:
- # Did the error occur before or after the module was found?
- (exc, value, tb) = info = sys.exc_info()
- if sys.modules.has_key(path):
- # An error occured while executing the imported module.
- raise ErrorDuringImport(sys.modules[path].__file__, info)
- elif exc is SyntaxError:
- # A SyntaxError occurred before we could execute the module.
- raise ErrorDuringImport(value.filename, info)
- elif exc is ImportError and \
- split(lower(str(value)))[:2] == ['no', 'module']:
- # The module was not found.
- return None
- else:
- # Some other error occurred during the importing process.
- raise ErrorDuringImport(path, sys.exc_info())
- for part in split(path, '.')[1:]:
- try: module = getattr(module, part)
- except AttributeError: return None
- return module
-
-def locate(path):
+def locate(path, forceload=0):
"""Locate an object by name or dotted path, importing as necessary."""
parts = split(path, '.')
module, n = None, 0
while n < len(parts):
- nextmodule = freshimport(join(parts[:n+1], '.'))
+ nextmodule = safeimport(join(parts[:n+1], '.'), forceload)
if nextmodule: module, n = nextmodule, n + 1
else: break
if module:
@@ -1071,12 +1085,12 @@ def locate(path):
text = TextDoc()
html = HTMLDoc()
-def doc(thing, title='Python Library Documentation: %s'):
+def doc(thing, title='Python Library Documentation: %s', forceload=0):
"""Display text documentation, given an object or a path to an object."""
suffix, name = '', None
if type(thing) is type(''):
try:
- object = locate(thing)
+ object = locate(thing, forceload)
except ErrorDuringImport, value:
print value
return
@@ -1094,10 +1108,10 @@ def doc(thing, title='Python Library Documentation: %s'):
suffix = ' in module ' + module.__name__
pager(title % (desc + suffix) + '\n\n' + text.document(thing, name))
-def writedoc(key):
+def writedoc(key, forceload=0):
"""Write HTML documentation to a file in the current directory."""
try:
- object = locate(key)
+ object = locate(key, forceload)
except ErrorDuringImport, value:
print value
else:
@@ -1111,12 +1125,13 @@ def writedoc(key):
else:
print 'no Python documentation found for %s' % repr(key)
-def writedocs(dir, pkgpath='', done={}):
+def writedocs(dir, pkgpath='', done=None):
"""Write out HTML documentation for all modules in a directory tree."""
+ if done is None: done = {}
for file in os.listdir(dir):
path = os.path.join(dir, file)
if ispackage(path):
- writedocs(path, pkgpath + file + '.')
+ writedocs(path, pkgpath + file + '.', done)
elif os.path.isfile(path):
modname = inspect.getmodulename(path)
if modname:
@@ -1251,26 +1266,12 @@ class Helper:
if dir and os.path.isdir(os.path.join(dir, 'lib')):
self.docdir = dir
- def __repr__(self):
- self()
- return ''
-
def __call__(self, request=None):
if request is not None:
self.help(request)
else:
self.intro()
- self.output.write('\n')
- while 1:
- self.output.write('help> ')
- self.output.flush()
- try:
- request = self.input.readline()
- if not request: break
- except KeyboardInterrupt: break
- request = strip(replace(request, '"', '', "'", ''))
- if lower(request) in ['q', 'quit']: break
- self.help(request)
+ self.interact()
self.output.write('''
You're now leaving help and returning to the Python interpreter.
If you want to ask for help on a particular object directly from the
@@ -1278,6 +1279,19 @@ interpreter, you can type "help(object)". Executing "help('string')"
has the same effect as typing a particular string at the help> prompt.
''')
+ def interact(self):
+ self.output.write('\n')
+ while 1:
+ self.output.write('help> ')
+ self.output.flush()
+ try:
+ request = self.input.readline()
+ if not request: break
+ except KeyboardInterrupt: break
+ request = strip(replace(request, '"', '', "'", ''))
+ if lower(request) in ['q', 'quit']: break
+ self.help(request)
+
def help(self, request):
if type(request) is type(''):
if request == 'help': self.intro()
@@ -1361,8 +1375,8 @@ please set the environment variable PYTHONDOCS to indicate their location.
self.output.write('could not read docs from %s\n' % filename)
return
- divpat = re.compile('<div[^>]*navigat.*?</div[^>]*>', re.I | re.S)
- addrpat = re.compile('<address[^>]*>.*?</address[^>]*>', re.I | re.S)
+ divpat = re.compile('<div[^>]*navigat.*?</div.*?>', re.I | re.S)
+ addrpat = re.compile('<address.*?>.*?</address.*?>', re.I | re.S)
document = re.sub(addrpat, '', re.sub(divpat, '', file.read()))
file.close()
@@ -1460,7 +1474,7 @@ class ModuleScanner(Scanner):
if key is None:
callback(None, modname, '')
else:
- desc = split(freshimport(modname).__doc__ or '', '\n')[0]
+ desc = split(__import__(modname).__doc__ or '', '\n')[0]
if find(lower(modname + ' - ' + desc), key) >= 0:
callback(None, modname, desc)
@@ -1522,7 +1536,7 @@ def serve(port, callback=None, completer=None):
if path[:1] == '/': path = path[1:]
if path and path != '.':
try:
- obj = locate(path)
+ obj = locate(path, forceload=1)
except ErrorDuringImport, value:
self.send_document(path, html.escape(str(value)))
return
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