Python exceptions.InstallationError方法代码示例

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def run(self, options, args):
        with self._build_session(options) as session:
            reqs_to_uninstall = {}
            for name in args:
                req = InstallRequirement.from_line(
                    name, isolated=options.isolated_mode,
                )
                if req.name:
                    reqs_to_uninstall[canonicalize_name(req.name)] = req
            for filename in options.requirements:
                for req in parse_requirements(
                        filename,
                        options=options,
                        session=session):
                    if req.name:
                        reqs_to_uninstall[canonicalize_name(req.name)] = req
            if not reqs_to_uninstall:
                raise InstallationError(
                    'You must give at least one requirement to %(name)s (see '
                    '"pip help %(name)s")' % dict(name=self.name)
                )
            for req in reqs_to_uninstall.values():
                uninstall_pathset = req.uninstall(
                    auto_confirm=options.yes, verbose=self.verbosity > 0,
                )
                if uninstall_pathset:
                    uninstall_pathset.commit() 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def unpack_file(filename, location, content_type, link):
    filename = os.path.realpath(filename)
    if (content_type == 'application/zip' or
            filename.lower().endswith(ZIP_EXTENSIONS) or
            zipfile.is_zipfile(filename)):
        unzip_file(
            filename,
            location,
            flatten=not filename.endswith('.whl')
        )
    elif (content_type == 'application/x-gzip' or
            tarfile.is_tarfile(filename) or
            filename.lower().endswith(
                TAR_EXTENSIONS + BZ2_EXTENSIONS + XZ_EXTENSIONS)):
        untar_file(filename, location)
    elif (content_type and content_type.startswith('text/html') and
            is_svn_page(file_contents(filename))):
        # We don't really care about this
        from pip._internal.vcs.subversion import Subversion
        Subversion('svn+' + link.url).unpack(location)
    else:
        # FIXME: handle?
        # FIXME: magic signatures?
        logger.critical(
            'Cannot unpack file %s (downloaded from %s, content-type: %s); '
            'cannot detect archive format',
            filename, location, content_type,
        )
        raise InstallationError(
            'Cannot determine archive format of %s' % location
        ) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def from_editable(cls, editable_req, comes_from=None, isolated=False,
                      options=None, wheel_cache=None, constraint=False):
        from pip._internal.index import Link

        name, url, extras_override = parse_editable(editable_req)
        if url.startswith('file:'):
            source_dir = url_to_path(url)
        else:
            source_dir = None

        if name is not None:
            try:
                req = Requirement(name)
            except InvalidRequirement:
                raise InstallationError("Invalid requirement: '%s'" % name)
        else:
            req = None
        return cls(
            req, comes_from, source_dir=source_dir,
            editable=True,
            link=Link(url),
            constraint=constraint,
            isolated=isolated,
            options=options if options else {},
            wheel_cache=wheel_cache,
            extras=extras_override or (),
        ) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def from_req(cls, req, comes_from=None, isolated=False, wheel_cache=None):
        try:
            req = Requirement(req)
        except InvalidRequirement:
            raise InstallationError("Invalid requirement: '%s'" % req)
        if req.url:
            raise InstallationError(
                "Direct url requirement (like %s) are not allowed for "
                "dependencies" % req
            )
        return cls(req, comes_from, isolated=isolated, wheel_cache=wheel_cache) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def check_if_exists(self, use_user_site):
        """Find an installed distribution that satisfies or conflicts
        with this requirement, and set self.satisfied_by or
        self.conflicts_with appropriately.
        """
        if self.req is None:
            return False
        try:
            # get_distribution() will resolve the entire list of requirements
            # anyway, and we've already determined that we need the requirement
            # in question, so strip the marker so that we don't try to
            # evaluate it.
            no_marker = Requirement(str(self.req))
            no_marker.marker = None
            self.satisfied_by = pkg_resources.get_distribution(str(no_marker))
            if self.editable and self.satisfied_by:
                self.conflicts_with = self.satisfied_by
                # when installing editables, nothing pre-existing should ever
                # satisfy
                self.satisfied_by = None
                return True
        except pkg_resources.DistributionNotFound:
            return False
        except pkg_resources.VersionConflict:
            existing_dist = pkg_resources.get_distribution(
                self.req.name
            )
            if use_user_site:
                if dist_in_usersite(existing_dist):
                    self.conflicts_with = existing_dist
                elif (running_under_virtualenv() and
                        dist_in_site_packages(existing_dist)):
                    raise InstallationError(
                        "Will not install to the user site because it will "
                        "lack sys.path precedence to %s in %s" %
                        (existing_dist.project_name, existing_dist.location)
                    )
            else:
                self.conflicts_with = existing_dist
        return True 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def _correct_build_location(self):
        """Move self._temp_build_dir to self._ideal_build_dir/self.req.name

        For some requirements (e.g. a path to a directory), the name of the
        package is not available until we run egg_info, so the build_location
        will return a temporary directory and store the _ideal_build_dir.

        This is only called by self.egg_info_path to fix the temporary build
        directory.
        """
        if self.source_dir is not None:
            return
        assert self.req is not None
        assert self._temp_build_dir.path
        assert self._ideal_build_dir.path
        old_location = self._temp_build_dir.path
        self._temp_build_dir.path = None

        new_location = self.build_location(self._ideal_build_dir)
        if os.path.exists(new_location):
            raise InstallationError(
                'A package already exists in %s; please remove it to continue'
                % display_path(new_location))
        logger.debug(
            'Moving package %s from %s to new location %s',
            self, display_path(old_location), display_path(new_location),
        )
        shutil.move(old_location, new_location)
        self._temp_build_dir.path = new_location
        self._ideal_build_dir = None
        self.source_dir = os.path.normpath(os.path.abspath(new_location))
        self._egg_info_path = None 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def run(self, options, args):
        with self._build_session(options) as session:
            reqs_to_uninstall = {}
            for name in args:
                req = install_req_from_line(
                    name, isolated=options.isolated_mode,
                )
                if req.name:
                    reqs_to_uninstall[canonicalize_name(req.name)] = req
            for filename in options.requirements:
                for req in parse_requirements(
                        filename,
                        options=options,
                        session=session):
                    if req.name:
                        reqs_to_uninstall[canonicalize_name(req.name)] = req
            if not reqs_to_uninstall:
                raise InstallationError(
                    'You must give at least one requirement to %(name)s (see '
                    '"pip help %(name)s")' % dict(name=self.name)
                )

            protect_pip_from_modification_on_windows(
                modifying_pip="pip" in reqs_to_uninstall
            )

            for req in reqs_to_uninstall.values():
                uninstall_pathset = req.uninstall(
                    auto_confirm=options.yes, verbose=self.verbosity > 0,
                )
                if uninstall_pathset:
                    uninstall_pathset.commit() 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def unpack_file(
    filename,  # type: str
    location,  # type: str
    content_type,  # type: Optional[str]
    link  # type: Optional[Link]
):
    # type: (...) -> None
    filename = os.path.realpath(filename)
    if (content_type == 'application/zip' or
            filename.lower().endswith(ZIP_EXTENSIONS) or
            zipfile.is_zipfile(filename)):
        unzip_file(
            filename,
            location,
            flatten=not filename.endswith('.whl')
        )
    elif (content_type == 'application/x-gzip' or
            tarfile.is_tarfile(filename) or
            filename.lower().endswith(
                TAR_EXTENSIONS + BZ2_EXTENSIONS + XZ_EXTENSIONS)):
        untar_file(filename, location)
    elif (content_type and content_type.startswith('text/html') and
            is_svn_page(file_contents(filename))):
        # We don't really care about this
        from pip._internal.vcs.subversion import Subversion
        Subversion('svn+' + link.url).unpack(location)
    else:
        # FIXME: handle?
        # FIXME: magic signatures?
        logger.critical(
            'Cannot unpack file %s (downloaded from %s, content-type: %s); '
            'cannot detect archive format',
            filename, location, content_type,
        )
        raise InstallationError(
            'Cannot determine archive format of %s' % location
        ) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def install_req_from_editable(
    editable_req,  # type: str
    comes_from=None,  # type: Optional[str]
    use_pep517=None,  # type: Optional[bool]
    isolated=False,  # type: bool
    options=None,  # type: Optional[Dict[str, Any]]
    wheel_cache=None,  # type: Optional[WheelCache]
    constraint=False  # type: bool
):
    # type: (...) -> InstallRequirement
    name, url, extras_override = parse_editable(editable_req)
    if url.startswith('file:'):
        source_dir = url_to_path(url)
    else:
        source_dir = None

    if name is not None:
        try:
            req = Requirement(name)
        except InvalidRequirement:
            raise InstallationError("Invalid requirement: '%s'" % name)
    else:
        req = None
    return InstallRequirement(
        req, comes_from, source_dir=source_dir,
        editable=True,
        link=Link(url),
        constraint=constraint,
        use_pep517=use_pep517,
        isolated=isolated,
        options=options if options else {},
        wheel_cache=wheel_cache,
        extras=extras_override or (),
    ) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def install_req_from_req_string(
    req_string,  # type: str
    comes_from=None,  # type: Optional[InstallRequirement]
    isolated=False,  # type: bool
    wheel_cache=None,  # type: Optional[WheelCache]
    use_pep517=None  # type: Optional[bool]
):
    # type: (...) -> InstallRequirement
    try:
        req = Requirement(req_string)
    except InvalidRequirement:
        raise InstallationError("Invalid requirement: '%s'" % req_string)

    domains_not_allowed = [
        PyPI.file_storage_domain,
        TestPyPI.file_storage_domain,
    ]
    if (req.url and comes_from and comes_from.link and
            comes_from.link.netloc in domains_not_allowed):
        # Explicitly disallow pypi packages that depend on external urls
        raise InstallationError(
            "Packages installed from PyPI cannot depend on packages "
            "which are not also hosted on PyPI.\n"
            "%s depends on %s " % (comes_from.name, req)
        )

    return InstallRequirement(
        req, comes_from, isolated=isolated, wheel_cache=wheel_cache,
        use_pep517=use_pep517
    ) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def run(self, options, args):
        session = self.get_default_session(options)

        reqs_to_uninstall = {}
        for name in args:
            req = install_req_from_line(
                name, isolated=options.isolated_mode,
            )
            if req.name:
                reqs_to_uninstall[canonicalize_name(req.name)] = req
        for filename in options.requirements:
            for req in parse_requirements(
                    filename,
                    options=options,
                    session=session):
                if req.name:
                    reqs_to_uninstall[canonicalize_name(req.name)] = req
        if not reqs_to_uninstall:
            raise InstallationError(
                'You must give at least one requirement to %(name)s (see '
                '"pip help %(name)s")' % dict(name=self.name)
            )

        protect_pip_from_modification_on_windows(
            modifying_pip="pip" in reqs_to_uninstall
        )

        for req in reqs_to_uninstall.values():
            uninstall_pathset = req.uninstall(
                auto_confirm=options.yes, verbose=self.verbosity > 0,
            )
            if uninstall_pathset:
                uninstall_pathset.commit() 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def unpack_file(
        filename,  # type: str
        location,  # type: str
        content_type=None,  # type: Optional[str]
):
    # type: (...) -> None
    filename = os.path.realpath(filename)
    if (
        content_type == 'application/zip' or
        filename.lower().endswith(ZIP_EXTENSIONS) or
        zipfile.is_zipfile(filename)
    ):
        unzip_file(
            filename,
            location,
            flatten=not filename.endswith('.whl')
        )
    elif (
        content_type == 'application/x-gzip' or
        tarfile.is_tarfile(filename) or
        filename.lower().endswith(
            TAR_EXTENSIONS + BZ2_EXTENSIONS + XZ_EXTENSIONS
        )
    ):
        untar_file(filename, location)
    else:
        # FIXME: handle?
        # FIXME: magic signatures?
        logger.critical(
            'Cannot unpack file %s (downloaded from %s, content-type: %s); '
            'cannot detect archive format',
            filename, location, content_type,
        )
        raise InstallationError(
            'Cannot determine archive format of {}'.format(location)
        ) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def _get_url_from_path(path, name):
    # type: (str, str) -> str
    """
    First, it checks whether a provided path is an installable directory
    (e.g. it has a setup.py). If it is, returns the path.

    If false, check if the path is an archive file (such as a .whl).
    The function checks if the path is a file. If false, if the path has
    an @, it will treat it as a PEP 440 URL requirement and return the path.
    """
    if _looks_like_path(name) and os.path.isdir(path):
        if is_installable_dir(path):
            return path_to_url(path)
        raise InstallationError(
            "Directory %r is not installable. Neither 'setup.py' "
            "nor 'pyproject.toml' found." % name
        )
    if not is_archive_file(path):
        return None
    if os.path.isfile(path):
        return path_to_url(path)
    urlreq_parts = name.split('@', 1)
    if len(urlreq_parts) >= 2 and not _looks_like_path(urlreq_parts[0]):
        # If the path contains '@' and the part before it does not look
        # like a path, try to treat it as a PEP 440 URL req instead.
        return None
    logger.warning(
        'Requirement %r looks like a filename, but the '
        'file does not exist',
        name
    )
    return path_to_url(path) 

# 需要导入模块: from pip._internal import exceptions [as 别名]
# 或者: from pip._internal.exceptions import InstallationError [as 别名]
def controls_location(cls, location):
        if super(Mercurial, cls).controls_location(location):
            return True
        try:
            cls.run_command(
                ['identify'],
                cwd=location,
                show_stdout=False,
                on_returncode='raise',
                log_failed_cmd=False)
            return True
        except (BadCommand, InstallationError):
            return False