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"""Generate Python documentation in HTML or text for interactive use.
At the Python interactive prompt, calling help(thing) on a Python object
documents the object, and calling help() starts up an interactive
help session.
Or, at the shell command line outside of Python:
Run "pydoc <name>" to show documentation on something. <name> may be
the name of a function, module, package, or a dotted reference to a
class or function within a module or module in a package. If the
argument contains a path segment delimiter (e.g. slash on Unix,
backslash on Windows) it is treated as the path to a Python source file.
Run "pydoc -k <keyword>" to search for a keyword in the synopsis lines
of all available modules.
Run "pydoc -n <hostname>" to start an HTTP server with the given
hostname (default: localhost) on the local machine.
Run "pydoc -p <port>" to start an HTTP server on the given port on the
local machine. Port number 0 can be used to get an arbitrary unused port.
Run "pydoc -b" to start an HTTP server on an arbitrary unused port and
open a web browser to interactively browse documentation. Combine with
the -n and -p options to control the hostname and port used.
Run "pydoc -w <name>" to write out the HTML documentation for a module
to a file named "<name>.html".
Module docs for core modules are assumed to be in
https://docs.python.org/X.Y/library/
This can be overridden by setting the PYTHONDOCS environment variable
to a different URL or to a local directory containing the Library
Reference Manual pages.
"""
__all__ = ['help']
__author__ = "Ka-Ping Yee <ping@lfw.org>"
__date__ = "26 February 2001"
__credits__ = """Guido van Rossum, for an excellent programming language.
Tommy Burnette, the original creator of manpy.
Paul Prescod, for all his work on onlinehelp.
Richard Chamberlain, for the first implementation of textdoc.
"""
# Known bugs that can't be fixed here:
# - synopsis() cannot be prevented from clobbering existing
# loaded modules.
# - If the __file__ attribute on a module is a relative path and
# the current directory is changed with os.chdir(), an incorrect
# path will be displayed.
import ast
import __future__
import builtins
import importlib._bootstrap
import importlib._bootstrap_external
import importlib.machinery
import importlib.util
import inspect
import io
import os
import pkgutil
import platform
import re
import sys
import sysconfig
import textwrap
import time
import tokenize
import urllib.parse
import warnings
from annotationlib import Format
from collections import deque
from reprlib import Repr
from traceback import format_exception_only
try:
from _pyrepl.pager import (get_pager, pipe_pager,
plain_pager, tempfile_pager, tty_pager)
# Expose plain() as pydoc.plain()
from _pyrepl.pager import plain # noqa: F401
# --------------------------------------------------------- old names
getpager = get_pager
pipepager = pipe_pager
plainpager = plain_pager
tempfilepager = tempfile_pager
ttypager = tty_pager
except ModuleNotFoundError:
# Minimal alternatives for cases where _pyrepl is absent.
def plain(text: str) -> str:
"""Remove boldface formatting from text."""
return re.sub('.\b', '', text)
def plain_pager(text: str, title: str = '') -> None:
"""Simply print unformatted text. This is the ultimate fallback."""
encoding = getattr(sys.stdout, 'encoding', None) or 'utf-8'
text = text.encode(encoding, 'backslashreplace').decode(encoding)
text = plain(text)
sys.stdout.write(text)
def get_pager():
"""Unconditionally return the plain pager, since _pyrepl is absent."""
return plain_pager
# --------------------------------------------------------- old names
getpager = get_pager
plainpager = plain_pager
# --------------------------------------------------------- common routines
def pathdirs():
"""Convert sys.path into a list of absolute, existing, unique paths."""
dirs = []
normdirs = []
for dir in sys.path:
dir = os.path.abspath(dir or '.')
normdir = os.path.normcase(dir)
if normdir not in normdirs and os.path.isdir(dir):
dirs.append(dir)
normdirs.append(normdir)
return dirs
def _getdoc(object):
return inspect.getdoc(object,
fallback_to_class_doc=False,
inherit_class_doc=False)
def getdoc(object):
"""Get the doc string or comments for an object."""
result = _getdoc(object) or inspect.getcomments(object)
return result and re.sub('^ *\n', '', result.rstrip()) or ''
def splitdoc(doc):
"""Split a doc string into a synopsis line (if any) and the rest."""
lines = doc.strip().split('\n')
if len(lines) == 1:
return lines[0], ''
elif len(lines) >= 2 and not lines[1].rstrip():
return lines[0], '\n'.join(lines[2:])
return '', '\n'.join(lines)
def _getargspec(object):
try:
signature = inspect.signature(object, annotation_format=Format.STRING)
if signature:
name = getattr(object, '__name__', '')
# <lambda> function are always single-line and should not be formatted
max_width = (80 - len(name)) if name != '<lambda>' else None
return signature.format(max_width=max_width, quote_annotation_strings=False)
except (ValueError, TypeError):
argspec = getattr(object, '__text_signature__', None)
if argspec:
if argspec[:2] == '($':
argspec = '(' + argspec[2:]
if getattr(object, '__self__', None) is not None:
# Strip the bound argument.
m = re.match(r'\(\w+(?:(?=\))|,\s*(?:/(?:(?=\))|,\s*))?)', argspec)
if m:
argspec = '(' + argspec[m.end():]
return argspec
return None
def classname(object, modname):
"""Get a class name and qualify it with a module name if necessary."""
name = object.__name__
if object.__module__ != modname:
name = object.__module__ + '.' + name
return name
def parentname(object, modname):
"""Get a name of the enclosing class (qualified it with a module name
if necessary) or module."""
if '.' in object.__qualname__:
name = object.__qualname__.rpartition('.')[0]
if object.__module__ != modname and object.__module__ is not None:
return object.__module__ + '.' + name
else:
return name
else:
if object.__module__ != modname:
return object.__module__
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."""
while pairs:
text = pairs[1].join(text.split(pairs[0]))
pairs = pairs[2:]
return text
def cram(text, maxlen):
"""Omit part of a string if needed to make it fit in a maximum length."""
if len(text) > maxlen:
pre = max(0, (maxlen-3)//2)
post = max(0, maxlen-3-pre)
return text[:pre] + '...' + text[len(text)-post:]
return text
_re_stripid = re.compile(r' at 0x[0-9a-f]{6,16}(>+)$', re.IGNORECASE)
def stripid(text):
"""Remove the hexadecimal id from a Python object representation."""
# The behaviour of %p is implementation-dependent in terms of case.
return _re_stripid.sub(r'\1', text)
def _is_bound_method(fn):
"""
Returns True if fn is a bound method, regardless of whether
fn was implemented in Python or in C.
"""
if inspect.ismethod(fn):
return True
if inspect.isbuiltin(fn):
self = getattr(fn, '__self__', None)
return not (inspect.ismodule(self) or (self is None))
return False
def allmethods(cl):
methods = {}
for key, value in inspect.getmembers(cl, inspect.isroutine):
methods[key] = 1
for base in cl.__bases__:
methods.update(allmethods(base)) # all your base are belong to us
for key in methods.keys():
methods[key] = getattr(cl, key)
return methods
def _split_list(s, predicate):
"""Split sequence s via predicate, and return pair ([true], [false]).
The return value is a 2-tuple of lists,
([x for x in s if predicate(x)],
[x for x in s if not predicate(x)])
"""
yes = []
no = []
for x in s:
if predicate(x):
yes.append(x)
else:
no.append(x)
return yes, no
_future_feature_names = set(__future__.all_feature_names)
def visiblename(name, all=None, obj=None):
"""Decide whether to show documentation on a variable."""
# Certain special names are redundant or internal.
# XXX Remove __initializing__?
if name in {'__author__', '__builtins__', '__credits__', '__date__',
'__doc__', '__file__', '__spec__', '__loader__', '__module__',
'__name__', '__package__', '__path__', '__qualname__',
'__slots__', '__version__', '__static_attributes__',
'__firstlineno__', '__annotate_func__',
'__annotations_cache__'}:
return 0
# Private names are hidden, but special names are displayed.
if name.startswith('__') and name.endswith('__'): return 1
# Namedtuples have public fields and methods with a single leading underscore
if name.startswith('_') and hasattr(obj, '_fields'):
return True
# Ignore __future__ imports.
if obj is not __future__ and name in _future_feature_names:
if isinstance(getattr(obj, name, None), __future__._Feature):
return False
if all is not None:
# only document that which the programmer exported in __all__
return name in all
else:
return not name.startswith('_')
def classify_class_attrs(object):
"""Wrap inspect.classify_class_attrs, with fixup for data descriptors and bound methods."""
results = []
for (name, kind, cls, value) in inspect.classify_class_attrs(object):
if inspect.isdatadescriptor(value):
kind = 'data descriptor'
if isinstance(value, property) and value.fset is None:
kind = 'readonly property'
elif kind == 'method' and _is_bound_method(value):
kind = 'static method'
results.append((name, kind, cls, value))
return results
def sort_attributes(attrs, object):
'Sort the attrs list in-place by _fields and then alphabetically by name'
# This allows data descriptors to be ordered according
# to a _fields attribute if present.
fields = getattr(object, '_fields', [])
try:
field_order = {name : i-len(fields) for (i, name) in enumerate(fields)}
except TypeError:
field_order = {}
keyfunc = lambda attr: (field_order.get(attr[0], 0), attr[0])
attrs.sort(key=keyfunc)
# ----------------------------------------------------- module manipulation
def ispackage(path):
"""Guess whether a path refers to a package directory."""
warnings.warn('The pydoc.ispackage() function is deprecated',
DeprecationWarning, stacklevel=2)
if os.path.isdir(path):
for ext in ('.py', '.pyc'):
if os.path.isfile(os.path.join(path, '__init__' + ext)):
return True
return False
def source_synopsis(file):
"""Return the one-line summary of a file object, if present"""
string = ''
try:
tokens = tokenize.generate_tokens(file.readline)
for tok_type, tok_string, _, _, _ in tokens:
if tok_type == tokenize.STRING:
string += tok_string
elif tok_type == tokenize.NEWLINE:
with warnings.catch_warnings():
# Ignore the "invalid escape sequence" warning.
warnings.simplefilter("ignore", SyntaxWarning)
docstring = ast.literal_eval(string)
if not isinstance(docstring, str):
return None
return docstring.strip().split('\n')[0].strip()
elif tok_type == tokenize.OP and tok_string in ('(', ')'):
string += tok_string
elif tok_type not in (tokenize.COMMENT, tokenize.NL, tokenize.ENCODING):
return None
except (tokenize.TokenError, UnicodeDecodeError, SyntaxError):
return None
return None
def synopsis(filename, cache={}):
"""Get the one-line summary out of a module file."""
mtime = os.stat(filename).st_mtime
lastupdate, result = cache.get(filename, (None, None))
if lastupdate is None or lastupdate < mtime:
# Look for binary suffixes first, falling back to source.
if filename.endswith(tuple(importlib.machinery.BYTECODE_SUFFIXES)):
loader_cls = importlib.machinery.SourcelessFileLoader
elif filename.endswith(tuple(importlib.machinery.EXTENSION_SUFFIXES)):
loader_cls = importlib.machinery.ExtensionFileLoader
else:
loader_cls = None
# Now handle the choice.
if loader_cls is None:
# Must be a source file.
try:
file = tokenize.open(filename)
except OSError:
# module can't be opened, so skip it
return None
# text modules can be directly examined
with file:
result = source_synopsis(file)
else:
# Must be a binary module, which has to be imported.
loader = loader_cls('__temp__', filename)
# XXX We probably don't need to pass in the loader here.
spec = importlib.util.spec_from_file_location('__temp__', filename,
loader=loader)
try:
module = importlib._bootstrap._load(spec)
except:
return None
del sys.modules['__temp__']
result = module.__doc__.splitlines()[0] if module.__doc__ else None
# Cache the result.
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_info):
if not isinstance(exc_info, tuple):
assert isinstance(exc_info, BaseException)
self.exc = type(exc_info)
self.value = exc_info
self.tb = exc_info.__traceback__
else:
warnings.warn("A tuple value for exc_info is deprecated, use an exception instance",
DeprecationWarning)
self.exc, self.value, self.tb = exc_info
self.filename = filename
def __str__(self):
exc = self.exc.__name__
return 'problem in %s - %s: %s' % (self.filename, exc, self.value)
def importfile(path):
"""Import a Python source file or compiled file given its path."""
magic = importlib.util.MAGIC_NUMBER
with open(path, 'rb') as file:
is_bytecode = magic == file.read(len(magic))
filename = os.path.basename(path)
name, ext = os.path.splitext(filename)
if is_bytecode:
loader = importlib._bootstrap_external.SourcelessFileLoader(name, path)
else:
loader = importlib._bootstrap_external.SourceFileLoader(name, path)
# XXX We probably don't need to pass in the loader here.
spec = importlib.util.spec_from_file_location(name, path, loader=loader)
try:
return importlib._bootstrap._load(spec)
except BaseException as err:
raise ErrorDuringImport(path, err)
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)."""
try:
# If forceload is 1 and the module has been previously loaded from
# disk, we always have to reload the module. Checking the file's
# mtime isn't good enough (e.g. the module could contain a class
# that inherits from another module that has changed).
if forceload and path in sys.modules:
if path not in sys.builtin_module_names:
# Remove the module from sys.modules and re-import to try
# and avoid problems with partially loaded modules.
# Also remove any submodules because they won't appear
# in the newly loaded module's namespace if they're already
# in sys.modules.
subs = [m for m in sys.modules if m.startswith(path + '.')]
for key in [path] + subs:
# Prevent garbage collection.
cache[key] = sys.modules[key]
del sys.modules[key]
module = importlib.import_module(path)
except BaseException as err:
# Did the error occur before or after the module was found?
if path in sys.modules:
# An error occurred while executing the imported module.
raise ErrorDuringImport(sys.modules[path].__file__, err)
elif type(err) is SyntaxError:
# A SyntaxError occurred before we could execute the module.
raise ErrorDuringImport(err.filename, err)
elif isinstance(err, ImportError) and err.name == path:
# No such module in the path.
return None
else:
# Some other error occurred during the importing process.
raise ErrorDuringImport(path, err)
return module
# ---------------------------------------------------- formatter base class
class Doc:
PYTHONDOCS = os.environ.get("PYTHONDOCS",
"https://docs.python.org/%d.%d/library"
% sys.version_info[:2])
STDLIB_DIR = sysconfig.get_path('stdlib')
def document(self, object, name=None, *args):
"""Generate documentation for an object."""
args = (object, name) + args
# 'try' clause is to attempt to handle the possibility that inspect
# identifies something in a way that pydoc itself has issues handling;
# think 'super' and how it is a descriptor (which raises the exception
# by lacking a __name__ attribute) and an instance.
try:
if inspect.ismodule(object): return self.docmodule(*args)
if inspect.isclass(object): return self.docclass(*args)
if inspect.isroutine(object): return self.docroutine(*args)
except AttributeError:
pass
if inspect.isdatadescriptor(object): return self.docdata(*args)
return self.docother(*args)
def fail(self, object, name=None, *args):
"""Raise an exception for unimplemented types."""
message = "don't know how to document object%s of type %s" % (
name and ' ' + repr(name), type(object).__name__)
raise TypeError(message)
docmodule = docclass = docroutine = docother = docproperty = docdata = fail
def getdocloc(self, object, basedir=None):
"""Return the location of module docs or None"""
basedir = self.STDLIB_DIR if basedir is None else basedir
docloc = os.environ.get("PYTHONDOCS", self.PYTHONDOCS)
if (self._is_stdlib_module(object, basedir) and
object.__name__ not in ('xml.etree', 'test.test_pydoc.pydoc_mod')):
try:
from pydoc_data import module_docs
except ImportError:
module_docs = None
if module_docs and object.__name__ in module_docs.module_docs:
doc_name = module_docs.module_docs[object.__name__]
if docloc.startswith(("http://", "https://")):
docloc = "{}/{}".format(docloc.rstrip("/"), doc_name)
else:
docloc = os.path.join(docloc, doc_name)
else:
docloc = None
else:
docloc = None
return docloc
def _get_version(self, object):
if self._is_stdlib_module(object):
with warnings.catch_warnings():
warnings.simplefilter("ignore", DeprecationWarning)
version = getattr(object, '__version__', None)
else:
version = getattr(object, '__version__', None)
return '' if version is None else str(version)
def _is_stdlib_module(self, object, basedir=None):
basedir = self.STDLIB_DIR if basedir is None else basedir
try:
file = inspect.getabsfile(object)
except TypeError:
file = '(built-in)'
if sysconfig.is_python_build():
srcdir = sysconfig.get_config_var('srcdir')
if srcdir:
basedir = os.path.join(srcdir, 'Lib')
basedir = os.path.normcase(basedir)
return (isinstance(object, type(os)) and
(object.__name__ in ('errno', 'exceptions', 'gc',
'marshal', 'posix', 'signal', 'sys',
'_thread', 'zipimport')
or (file.startswith(basedir) and
not file.startswith(os.path.join(basedir, 'site-packages')))))
# -------------------------------------------- HTML documentation generator
class HTMLRepr(Repr):
"""Class for safely making an HTML representation of a Python object."""
def __init__(self):
Repr.__init__(self)
self.maxlist = self.maxtuple = 20
self.maxdict = 10
self.maxstring = self.maxother = 100
def escape(self, text):
return replace(text, '&', '&', '<', '<', '>', '>')
def repr(self, object):
return Repr.repr(self, object)
def repr1(self, x, level):
if hasattr(type(x), '__name__'):
methodname = 'repr_' + '_'.join(type(x).__name__.split())
if hasattr(self, methodname):
return getattr(self, methodname)(x, level)
return self.escape(cram(stripid(repr(x)), self.maxother))
def repr_string(self, x, level):
test = cram(x, self.maxstring)
testrepr = repr(test)
if '\\' in test and '\\' not in replace(testrepr, r'\\', ''):
# Backslashes are only literal in the string and are never
# needed to make any special characters, so show a raw string.
return 'r' + testrepr[0] + self.escape(test) + testrepr[0]
return re.sub(r'((\\[\\abfnrtv\'"]|\\[0-9]..|\\x..|\\u....)+)',
r'<span class="repr">\1</span>',
self.escape(testrepr))
repr_str = repr_string
def repr_instance(self, x, level):
try:
return self.escape(cram(stripid(repr(x)), self.maxstring))
except:
return self.escape('<%s instance>' % x.__class__.__name__)
repr_unicode = repr_string
class HTMLDoc(Doc):
"""Formatter class for HTML documentation."""
# ------------------------------------------- HTML formatting utilities
_repr_instance = HTMLRepr()
repr = _repr_instance.repr
escape = _repr_instance.escape
def page(self, title, contents):
"""Format an HTML page."""
return '''\
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Python: %s</title>
</head><body>
%s
</body></html>''' % (title, contents)
def heading(self, title, extras=''):
"""Format a page heading."""
return '''
<table class="heading">
<tr class="heading-text decor">
<td class="title"> <br>%s</td>
<td class="extra">%s</td></tr></table>
''' % (title, extras or ' ')
def section(self, title, cls, contents, width=6,
prelude='', marginalia=None, gap=' '):
"""Format a section with a heading."""
if marginalia is None:
marginalia = '<span class="code">' + ' ' * width + '</span>'
result = '''<p>
<table class="section">
<tr class="decor %s-decor heading-text">
<td class="section-title" colspan=3> <br>%s</td></tr>
''' % (cls, title)
if prelude:
result = result + '''
<tr><td class="decor %s-decor" rowspan=2>%s</td>
<td class="decor %s-decor" colspan=2>%s</td></tr>
<tr><td>%s</td>''' % (cls, marginalia, cls, prelude, gap)
else:
result = result + '''
<tr><td class="decor %s-decor">%s</td><td>%s</td>''' % (cls, marginalia, gap)
return result + '\n<td class="singlecolumn">%s</td></tr></table>' % contents
def bigsection(self, title, *args):
"""Format a section with a big heading."""
title = '<strong class="bigsection">%s</strong>' % title
return self.section(title, *args)
def preformat(self, text):
"""Format literal preformatted text."""
text = self.escape(text.expandtabs())
return replace(text, '\n\n', '\n \n', '\n\n', '\n \n',
' ', ' ', '\n', '<br>\n')
def multicolumn(self, list, format):
"""Format a list of items into a multi-column list."""
result = ''
rows = (len(list) + 3) // 4
for col in range(4):
result = result + '<td class="multicolumn">'
for i in range(rows*col, rows*col+rows):
if i < len(list):
result = result + format(list[i]) + '<br>\n'
result = result + '</td>'
return '<table><tr>%s</tr></table>' % result
def grey(self, text): return '<span class="grey">%s</span>' % text
def namelink(self, name, *dicts):
"""Make a link for an identifier, given name-to-URL mappings."""
for dict in dicts:
if name in dict:
return '<a href="%s">%s</a>' % (dict[name], name)
return name
def classlink(self, object, modname):
"""Make a link for a class."""
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>' % (
module.__name__, name, classname(object, modname))
return classname(object, modname)
def parentlink(self, object, modname):
"""Make a link for the enclosing class or module."""
link = None
name, module = object.__name__, sys.modules.get(object.__module__)
if hasattr(module, name) and getattr(module, name) is object:
if '.' in object.__qualname__:
name = object.__qualname__.rpartition('.')[0]
if object.__module__ != modname:
link = '%s.html#%s' % (module.__name__, name)
else:
link = '#%s' % name
else:
if object.__module__ != modname:
link = '%s.html' % module.__name__
if link:
return '<a href="%s">%s</a>' % (link, parentname(object, modname))
else:
return parentname(object, modname)
def modulelink(self, object):
"""Make a link for a module."""
return '<a href="%s.html">%s</a>' % (object.__name__, object.__name__)
def modpkglink(self, modpkginfo):
"""Make a link for a module or package to display in an index."""
name, path, ispackage, shadowed = modpkginfo
if shadowed:
return self.grey(name)
if path:
url = '%s.%s.html' % (path, name)
else:
url = '%s.html' % name
if ispackage:
text = '<strong>%s</strong> (package)' % name
else:
text = name
return '<a href="%s">%s</a>' % (url, text)
def filelink(self, url, path):
"""Make a link to source file."""
return '<a href="file:%s">%s</a>' % (url, path)
def markup(self, text, escape=None, funcs={}, classes={}, methods={}):
"""Mark up some plain text, given a context of symbols to look for.
Each context dictionary maps object names to anchor names."""
escape = escape or self.escape
results = []
here = 0
pattern = re.compile(r'\b((http|https|ftp)://\S+[\w/]|'
r'RFC[- ]?(\d+)|'
r'PEP[- ]?(\d+)|'
r'(self\.)?(\w+))')
while match := pattern.search(text, here):
start, end = match.span()
results.append(escape(text[here:start]))
all, scheme, rfc, pep, selfdot, name = match.groups()
if scheme:
url = escape(all).replace('"', '"')
results.append('<a href="%s">%s</a>' % (url, url))
elif rfc:
url = 'https://www.rfc-editor.org/rfc/rfc%d.txt' % int(rfc)
results.append('<a href="%s">%s</a>' % (url, escape(all)))
elif pep:
url = 'https://peps.python.org/pep-%04d/' % int(pep)
results.append('<a href="%s">%s</a>' % (url, escape(all)))
elif selfdot:
# Create a link for methods like 'self.method(...)'
# and use <strong> for attributes like 'self.attr'
if text[end:end+1] == '(':
results.append('self.' + self.namelink(name, methods))
else:
results.append('self.<strong>%s</strong>' % name)
elif text[end:end+1] == '(':
results.append(self.namelink(name, methods, funcs, classes))
else:
results.append(self.namelink(name, classes))
here = end
results.append(escape(text[here:]))
return ''.join(results)
# ---------------------------------------------- type-specific routines
def formattree(self, tree, modname, parent=None):
"""Produce HTML for a class tree as given by inspect.getclasstree()."""
result = ''
for entry in tree:
if isinstance(entry, tuple):
c, bases = entry
result = result + '<dt class="heading-text">'
result = result + self.classlink(c, modname)
if bases and bases != (parent,):
parents = []
for base in bases:
parents.append(self.classlink(base, modname))
result = result + '(' + ', '.join(parents) + ')'
result = result + '\n</dt>'
elif isinstance(entry, list):
result = result + '<dd>\n%s</dd>\n' % self.formattree(
entry, modname, c)
return '<dl>\n%s</dl>\n' % result
def docmodule(self, object, name=None, mod=None, *ignored):
"""Produce HTML documentation for a module object."""
name = object.__name__ # ignore the passed-in name
try:
all = object.__all__
except AttributeError:
all = None
parts = name.split('.')
links = []
for i in range(len(parts)-1):
links.append(
'<a href="%s.html" class="white">%s</a>' %
('.'.join(parts[:i+1]), parts[i]))
linkedname = '.'.join(links + parts[-1:])
head = '<strong class="title">%s</strong>' % linkedname
try:
path = inspect.getabsfile(object)
url = urllib.parse.quote(path)
filelink = self.filelink(url, path)
except TypeError:
filelink = '(built-in)'
info = []
if version := self._get_version(object):
if version[:11] == '$' + 'Revision: ' and version[-1:] == '$':
version = version[11:-1].strip()
info.append('version %s' % self.escape(version))
if hasattr(object, '__date__'):
info.append(self.escape(str(object.__date__)))
if info:
head = head + ' (%s)' % ', '.join(info)
docloc = self.getdocloc(object)
if docloc is not None:
docloc = '<br><a href="%(docloc)s">Module Reference</a>' % locals()
else:
docloc = ''
result = self.heading(head, '<a href=".">index</a><br>' + filelink + docloc)
modules = inspect.getmembers(object, inspect.ismodule)
classes, cdict = [], {}
for key, value in inspect.getmembers(object, inspect.isclass):
# if __all__ exists, believe it. Otherwise use old heuristic.
if (all is not None or
(inspect.getmodule(value) or object) is object):
if visiblename(key, all, object):
classes.append((key, value))
cdict[key] = cdict[value] = '#' + key
for key, value in classes:
for base in value.__bases__:
key, modname = base.__name__, base.__module__
module = sys.modules.get(modname)
if modname != name and module and hasattr(module, key):
if getattr(module, key) is base:
if not key in cdict:
cdict[key] = cdict[base] = modname + '.html#' + key
funcs, fdict = [], {}
for key, value in inspect.getmembers(object, inspect.isroutine):
# if __all__ exists, believe it. Otherwise use a heuristic.
if (all is not None
or inspect.isbuiltin(value)
or (inspect.getmodule(value) or object) is object):
if visiblename(key, all, object):
funcs.append((key, value))
fdict[key] = '#-' + key
if inspect.isfunction(value): fdict[value] = fdict[key]
data = []
for key, value in inspect.getmembers(object, isdata):
if visiblename(key, all, object):
data.append((key, value))
doc = self.markup(getdoc(object), self.preformat, fdict, cdict)
doc = doc and '<span class="code">%s</span>' % doc
result = result + '<p>%s</p>\n' % doc
if hasattr(object, '__path__'):
modpkgs = []
for importer, modname, ispkg in pkgutil.iter_modules(object.__path__):
modpkgs.append((modname, name, ispkg, 0))
modpkgs.sort()
contents = self.multicolumn(modpkgs, self.modpkglink)
result = result + self.bigsection(
'Package Contents', 'pkg-content', contents)
elif modules:
contents = self.multicolumn(
modules, lambda t: self.modulelink(t[1]))
result = result + self.bigsection(
'Modules', 'pkg-content', contents)
if classes:
classlist = [value for (key, value) in classes]
contents = [
self.formattree(inspect.getclasstree(classlist, 1), name)]
for key, value in classes:
contents.append(self.document(value, key, name, fdict, cdict))
result = result + self.bigsection(
'Classes', 'index', ' '.join(contents))
if funcs:
contents = []
for key, value in funcs:
contents.append(self.document(value, key, name, fdict, cdict))
result = result + self.bigsection(
'Functions', 'functions', ' '.join(contents))
if data:
contents = []
for key, value in data:
contents.append(self.document(value, key))
result = result + self.bigsection(
'Data', 'data', '<br>\n'.join(contents))
if hasattr(object, '__author__'):
contents = self.markup(str(object.__author__), self.preformat)
result = result + self.bigsection('Author', 'author', contents)
if hasattr(object, '__credits__'):
contents = self.markup(str(object.__credits__), self.preformat)
result = result + self.bigsection('Credits', 'credits', contents)
return result
def docclass(self, object, name=None, mod=None, funcs={}, classes={},
*ignored):
"""Produce HTML documentation for a class object."""
realname = object.__name__
name = name or realname
bases = object.__bases__
contents = []
push = contents.append
# Cute little class to pump out a horizontal rule between sections.
class HorizontalRule:
def __init__(self):
self.needone = 0
def maybe(self):
if self.needone:
push('<hr>\n')
self.needone = 1
hr = HorizontalRule()
# List the mro, if non-trivial.
mro = deque(inspect.getmro(object))
if len(mro) > 2:
hr.maybe()
push('<dl><dt>Method resolution order:</dt>\n')
for base in mro:
push('<dd>%s</dd>\n' % self.classlink(base,
object.__module__))
push('</dl>\n')
def spill(msg, attrs, predicate):
ok, attrs = _split_list(attrs, predicate)
if ok:
hr.maybe()
push(msg)
for name, kind, homecls, value in ok:
try:
value = getattr(object, name)
except Exception:
# Some descriptors may meet a failure in their __get__.
# (bug #1785)
push(self.docdata(value, name, mod))
else:
push(self.document(value, name, mod,
funcs, classes, mdict, object, homecls))
push('\n')
return attrs
def spilldescriptors(msg, attrs, predicate):
ok, attrs = _split_list(attrs, predicate)
if ok:
hr.maybe()
push(msg)
for name, kind, homecls, value in ok:
push(self.docdata(value, name, mod))
return attrs
def spilldata(msg, attrs, predicate):
ok, attrs = _split_list(attrs, predicate)
if ok:
hr.maybe()
push(msg)
for name, kind, homecls, value in ok:
base = self.docother(getattr(object, name), name, mod)
doc = getdoc(value)
if not doc:
push('<dl><dt>%s</dl>\n' % base)
else:
doc = self.markup(getdoc(value), self.preformat,
funcs, classes, mdict)
doc = '<dd><span class="code">%s</span>' % doc
push('<dl><dt>%s%s</dl>\n' % (base, doc))
push('\n')
return attrs
attrs = [(name, kind, cls, value)
for name, kind, cls, value in classify_class_attrs(object)
if visiblename(name, obj=object)]
mdict = {}
for key, kind, homecls, value in attrs:
mdict[key] = anchor = '#' + name + '-' + key
try:
value = getattr(object, name)
except Exception:
# Some descriptors may meet a failure in their __get__.
# (bug #1785)
pass
try:
# The value may not be hashable (e.g., a data attr with
# a dict or list value).