astroid.modutils

module documentation

(source)

Python modules manipulation utility functions.

Class	`NoSourceFile`	exception raised when we are not able to get a python source file for a precompiled file
Function	`check_modpath_has_init`	check there are some __init__.py all along the way
Function	`file_from_modpath`	Undocumented
Function	`file_info_from_modpath`	given a mod path (i.e. split module / package name), return the corresponding file, giving priority to source file over precompiled file if it exists
Function	`get_module_files`	given a package directory return a list of all available python module's files in the package and its subpackages
Function	`get_module_part`	given a dotted name return the module part of the name :
Function	`get_source_file`	given a python module's file name return the matching source file name (the filename will be returned identically if it's already an absolute path to a python source file...)
Function	`is_directory`	Undocumented
Function	`is_module_name_part_of_extension_package_whitelist`	Returns True if one part of the module name is in the package whitelist
Function	`is_namespace`	Undocumented
Function	`is_python_source`	rtype: bool return: True if the filename is a python source file
Function	`is_relative`	return true if the given module name is relative to the given file name
Function	`is_standard_module`	try to guess if a module is a standard python module (by default, see `std_path` parameter's description)
Function	`load_module_from_file`	Load a Python module from it's path.
Function	`load_module_from_modpath`	Load a python module from its split name.
Function	`load_module_from_name`	Load a Python module from its name.
Function	`modpath_from_file`	Get the corresponding split module's name from a filename
Function	`modpath_from_file_with_callback`	Undocumented
Constant	`BUILTIN_MODULES`	dictionary with builtin module names has key
Constant	`EXT_LIB_DIRS`	Undocumented
Constant	`IS_JYTHON`	Undocumented
Constant	`PY_COMPILED_EXTS`	Undocumented
Constant	`PY_SOURCE_EXTS`	list of possible python source file extension
Constant	`STD_LIB_DIRS`	directories where standard modules are located
Function	`_cache_normalize_path`	Normalize path with caching.
Function	`_get_relative_base_path`	Extracts the relative mod path of the file to import from
Function	`_handle_blacklist`	remove files/directories in the black list
Function	`_has_init`	if the given directory has a valid __init__ file, return its path, else return None
Function	`_is_python_file`	return true if the given filename should be considered as a python file
Function	`_normalize_path`	Resolve symlinks in path and convert to absolute path.
Function	`_path_from_filename`	Undocumented
Function	`_posix_path`	Undocumented
Function	`_spec_from_modpath`	given a mod path (i.e. split module / package name), return the corresponding spec
Constant	`_NORM_PATH_CACHE`	Undocumented
Variable	`_root`	Undocumented

def check_modpath_has_init(path, mod_path): (source)

check there are some __init__.py all along the way

def file_from_modpath(modpath, path=None, context_file=None): (source)

Undocumented

def file_info_from_modpath(modpath, path=None, context_file=None): (source)

given a mod path (i.e. split module / package name), return the corresponding file, giving priority to source file over precompiled file if it exists

Parameters
modpath:list or tuple	split module's name (i.e name of a module or package split on '.') (this means explicit relative imports that start with dots have empty strings in this list!)
path:list or None	optional list of path where the module or package should be searched (use sys.path if nothing or None is given)
context_file:str or None	context file to consider, necessary if the identifier has been introduced using a relative import unresolvable in the actual context (i.e. modutils)
Returns
(str or None, import type)	the path to the module's file or None if it's an integrated builtin module such as 'sys'
Raises
`ImportError`	if there is no such module in the directory

def get_module_files(src_directory, blacklist, list_all=False): (source)

given a package directory return a list of all available python module's files in the package and its subpackages

Parameters
src_directory:str	path of the directory corresponding to the package
blacklist:list or tuple	iterable list of files or directories to ignore.
list_all:bool	get files from all paths, including ones without __init__.py
Returns
list	the list of all available python module's files in the package and its subpackages

def get_module_part(dotted_name, context_file=None): (source)

given a dotted name return the module part of the name :

>>> get_module_part('astroid.as_string.dump')
'astroid.as_string'

XXX: deprecated, since it doesn't handle package precedence over module (see #10066)

Parameters
dotted_name:str	full name of the identifier we are interested in
context_file:str or None	context file to consider, necessary if the identifier has been introduced using a relative import unresolvable in the actual context (i.e. modutils)
Returns
str or None	the module part of the name or None if we have not been able at all to import the given name
Raises
`ImportError`	if there is no such module in the directory

def get_source_file(filename, include_no_ext=False): (source)

given a python module's file name return the matching source file name (the filename will be returned identically if it's already an absolute path to a python source file...)

Parameters
filename:str	python module's file name
include_no_ext	Undocumented
Returns
str	the absolute path of the source file if it exists
Raises
`NoSourceFile`	if no source file exists on the file system

def is_directory(specobj): (source)

Undocumented

def is_module_name_part_of_extension_package_whitelist(module_name, package_whitelist): (source)

Returns True if one part of the module name is in the package whitelist

>>> is_module_name_part_of_extension_package_whitelist('numpy.core.umath', {'numpy'})
True

Parameters
module_name:`str`	Undocumented
package_whitelist:`Set[str]`	Undocumented
Returns
`bool`	Undocumented

def is_namespace(specobj): (source)

Undocumented

def is_python_source(filename): (source)

rtype: bool return: True if the filename is a python source file

def is_relative(modname, from_file): (source)

return true if the given module name is relative to the given file name

Parameters
modname:str	name of the module we are interested in
from_file:str	path of the module from which modname has been imported
Returns
bool	true if the module has been imported relatively to `from_file`

def is_standard_module(modname, std_path=None): (source)

try to guess if a module is a standard python module (by default, see std_path parameter's description)

Parameters
modname:str	name of the module we are interested in
std_path:list(str) or tuple(str)	list of path considered has standard
Returns
bool	true if the module: - is located on the path listed in one of the directory in `std_path` - is a built-in module

def load_module_from_file(filepath): (source)

Load a Python module from it's path.

Parameters
filepath:str	path to the python module or package
Returns
module	the loaded module
Raises
`ImportError`	if the module or package is not found

def load_module_from_modpath(parts): (source)

Load a python module from its split name.

Parameters
parts:list(str) or tuple(str)	python name of a module or package split on '.'
Returns
module	the loaded module
Raises
`ImportError`	if the module or package is not found

def load_module_from_name(dotted_name): (source)

Load a Python module from its name.

Parameters
dotted_name:str	python name of a module or package
Returns
module	the loaded module
Raises
`ImportError`	if the module or package is not found

def modpath_from_file(filename, path=None): (source)

Get the corresponding split module's name from a filename

This function will return the name of a module or package split on ..

Parameters
filename:str	file's path for which we want the module's name
path	Undocumented
Optional[List[str]] path:Optional list of path where the module or package should be searched (use sys.path if nothing or None is given)	Undocumented
Returns
list(str)	the corresponding split module's name
Raises
`ImportError`	if the corresponding module's name has not been found

def modpath_from_file_with_callback(filename, path=None, is_package_cb=None): (source)

Undocumented

BUILTIN_MODULES: dict = (source)

dictionary with builtin module names has key

Value

dict.fromkeys(sys.builtin_module_names, True)

EXT_LIB_DIRS = (source)

Undocumented

Value

set([get_python_lib(), get_python_lib(True)])

IS_JYTHON = (source)

Undocumented

Value

(platform.python_implementation() == 'Jython')

PY_COMPILED_EXTS: tuple[str, ...] = (source)

Undocumented

Value

('dll', 'pyd')

PY_SOURCE_EXTS: tuple(str) = (source)

list of possible python source file extension

Value

('py', 'pyw')

STD_LIB_DIRS: set of str = (source)

directories where standard modules are located

Value

set()

def _cache_normalize_path(path): (source)

Normalize path with caching.

Parameters
path:`str`	Undocumented
Returns
`str`	Undocumented

def _get_relative_base_path(filename, path_to_check): (source)

Extracts the relative mod path of the file to import from

Check if a file is within the passed in path and if so, returns the relative mod path from the one passed in.

If the filename is no in path_to_check, returns None

Note this function will look for both abs and realpath of the file, this allows to find the relative base path even if the file is a symlink of a file in the passed in path

Examples:: _get_relative_base_path("/a/b/c/d.py", "/a/b") -> ["c","d"] _get_relative_base_path("/a/b/c/d.py", "/dev") -> None

def _handle_blacklist(blacklist, dirnames, filenames): (source)

remove files/directories in the black list

dirnames/filenames are usually from os.walk

def _has_init(directory): (source)

if the given directory has a valid __init__ file, return its path, else return None

def _is_python_file(filename): (source)

return true if the given filename should be considered as a python file

.pyc and .pyo are ignored

def _normalize_path(path): (source)

Resolve symlinks in path and convert to absolute path.

Note that environment variables and ~ in the path need to be expanded in advance.

This can be cached by using _cache_normalize_path.

Parameters
path:`str`	Undocumented
Returns
`str`	Undocumented

def _path_from_filename(filename, is_jython=IS_JYTHON): (source)

Undocumented

def _posix_path(path): (source)

Undocumented

def _spec_from_modpath(modpath, path=None, context=None): (source)

given a mod path (i.e. split module / package name), return the corresponding spec

this function is used internally, see file_from_modpath's documentation for more information

_NORM_PATH_CACHE: Dict[str, str] = (source)

Undocumented

Value

{}

_root = (source)

Undocumented