Current File : //usr/lib/python3/dist-packages/pip/_internal/cli/cmdoptions.py
"""
shared options and groups

The principle here is to define options once, but *not* instantiate them
globally. One reason being that options with action='append' can carry state
between parses. pip parses general options twice internally, and shouldn't
pass on state. To be consistent, all options will follow this design.
"""

# The following comment should be removed at some point in the future.
# mypy: strict-optional=False

import importlib.util
import logging
import os
import textwrap
from functools import partial
from optparse import SUPPRESS_HELP, Option, OptionGroup, OptionParser, Values
from textwrap import dedent
from typing import Any, Callable, Dict, Optional, Tuple

from pip._vendor.packaging.utils import canonicalize_name

from pip._internal.cli.parser import ConfigOptionParser
from pip._internal.exceptions import CommandError
from pip._internal.locations import USER_CACHE_DIR, get_src_prefix
from pip._internal.models.format_control import FormatControl
from pip._internal.models.index import PyPI
from pip._internal.models.target_python import TargetPython
from pip._internal.utils.hashes import STRONG_HASHES
from pip._internal.utils.misc import strtobool

logger = logging.getLogger(__name__)


def raise_option_error(parser: OptionParser, option: Option, msg: str) -> None:
    """
    Raise an option parsing error using parser.error().

    Args:
      parser: an OptionParser instance.
      option: an Option instance.
      msg: the error text.
    """
    msg = f"{option} error: {msg}"
    msg = textwrap.fill(" ".join(msg.split()))
    parser.error(msg)


def make_option_group(group: Dict[str, Any], parser: ConfigOptionParser) -> OptionGroup:
    """
    Return an OptionGroup object
    group  -- assumed to be dict with 'name' and 'options' keys
    parser -- an optparse Parser
    """
    option_group = OptionGroup(parser, group["name"])
    for option in group["options"]:
        option_group.add_option(option())
    return option_group


def check_dist_restriction(options: Values, check_target: bool = False) -> None:
    """Function for determining if custom platform options are allowed.

    :param options: The OptionParser options.
    :param check_target: Whether or not to check if --target is being used.
    """
    dist_restriction_set = any(
        [
            options.python_version,
            options.platforms,
            options.abis,
            options.implementation,
        ]
    )

    binary_only = FormatControl(set(), {":all:"})
    sdist_dependencies_allowed = (
        options.format_control != binary_only and not options.ignore_dependencies
    )

    # Installations or downloads using dist restrictions must not combine
    # source distributions and dist-specific wheels, as they are not
    # guaranteed to be locally compatible.
    if dist_restriction_set and sdist_dependencies_allowed:
        raise CommandError(
            "When restricting platform and interpreter constraints using "
            "--python-version, --platform, --abi, or --implementation, "
            "either --no-deps must be set, or --only-binary=:all: must be "
            "set and --no-binary must not be set (or must be set to "
            ":none:)."
        )

    if check_target:
        if not options.dry_run and dist_restriction_set and not options.target_dir:
            raise CommandError(
                "Can not use any platform or abi specific options unless "
                "installing via '--target' or using '--dry-run'"
            )


def _path_option_check(option: Option, opt: str, value: str) -> str:
    return os.path.expanduser(value)


def _package_name_option_check(option: Option, opt: str, value: str) -> str:
    return canonicalize_name(value)


class PipOption(Option):
    TYPES = Option.TYPES + ("path", "package_name")
    TYPE_CHECKER = Option.TYPE_CHECKER.copy()
    TYPE_CHECKER["package_name"] = _package_name_option_check
    TYPE_CHECKER["path"] = _path_option_check


###########
# options #
###########

help_: Callable[..., Option] = partial(
    Option,
    "-h",
    "--help",
    dest="help",
    action="help",
    help="Show help.",
)

debug_mode: Callable[..., Option] = partial(
    Option,
    "--debug",
    dest="debug_mode",
    action="store_true",
    default=False,
    help=(
        "Let unhandled exceptions propagate outside the main subroutine, "
        "instead of logging them to stderr."
    ),
)

isolated_mode: Callable[..., Option] = partial(
    Option,
    "--isolated",
    dest="isolated_mode",
    action="store_true",
    default=False,
    help=(
        "Run pip in an isolated mode, ignoring environment variables and user "
        "configuration."
    ),
)

require_virtualenv: Callable[..., Option] = partial(
    Option,
    "--require-virtualenv",
    "--require-venv",
    dest="require_venv",
    action="store_true",
    default=False,
    help=(
        "Allow pip to only run in a virtual environment; "
        "exit with an error otherwise."
    ),
)

override_externally_managed: Callable[..., Option] = partial(
    Option,
    "--break-system-packages",
    dest="override_externally_managed",
    action="store_true",
    help="Allow pip to modify an EXTERNALLY-MANAGED Python installation",
)

python: Callable[..., Option] = partial(
    Option,
    "--python",
    dest="python",
    help="Run pip with the specified Python interpreter.",
)

verbose: Callable[..., Option] = partial(
    Option,
    "-v",
    "--verbose",
    dest="verbose",
    action="count",
    default=0,
    help="Give more output. Option is additive, and can be used up to 3 times.",
)

no_color: Callable[..., Option] = partial(
    Option,
    "--no-color",
    dest="no_color",
    action="store_true",
    default=False,
    help="Suppress colored output.",
)

version: Callable[..., Option] = partial(
    Option,
    "-V",
    "--version",
    dest="version",
    action="store_true",
    help="Show version and exit.",
)

quiet: Callable[..., Option] = partial(
    Option,
    "-q",
    "--quiet",
    dest="quiet",
    action="count",
    default=0,
    help=(
        "Give less output. Option is additive, and can be used up to 3"
        " times (corresponding to WARNING, ERROR, and CRITICAL logging"
        " levels)."
    ),
)

progress_bar: Callable[..., Option] = partial(
    Option,
    "--progress-bar",
    dest="progress_bar",
    type="choice",
    choices=["on", "off"],
    default="on",
    help="Specify whether the progress bar should be used [on, off] (default: on)",
)

log: Callable[..., Option] = partial(
    PipOption,
    "--log",
    "--log-file",
    "--local-log",
    dest="log",
    metavar="path",
    type="path",
    help="Path to a verbose appending log.",
)

no_input: Callable[..., Option] = partial(
    Option,
    # Don't ask for input
    "--no-input",
    dest="no_input",
    action="store_true",
    default=False,
    help="Disable prompting for input.",
)

keyring_provider: Callable[..., Option] = partial(
    Option,
    "--keyring-provider",
    dest="keyring_provider",
    choices=["auto", "disabled", "import", "subprocess"],
    default="auto",
    help=(
        "Enable the credential lookup via the keyring library if user input is allowed."
        " Specify which mechanism to use [disabled, import, subprocess]."
        " (default: disabled)"
    ),
)

proxy: Callable[..., Option] = partial(
    Option,
    "--proxy",
    dest="proxy",
    type="str",
    default="",
    help="Specify a proxy in the form scheme://[user:passwd@]proxy.server:port.",
)

retries: Callable[..., Option] = partial(
    Option,
    "--retries",
    dest="retries",
    type="int",
    default=5,
    help="Maximum number of retries each connection should attempt "
    "(default %default times).",
)

timeout: Callable[..., Option] = partial(
    Option,
    "--timeout",
    "--default-timeout",
    metavar="sec",
    dest="timeout",
    type="float",
    default=15,
    help="Set the socket timeout (default %default seconds).",
)


def exists_action() -> Option:
    return Option(
        # Option when path already exist
        "--exists-action",
        dest="exists_action",
        type="choice",
        choices=["s", "i", "w", "b", "a"],
        default=[],
        action="append",
        metavar="action",
        help="Default action when a path already exists: "
        "(s)witch, (i)gnore, (w)ipe, (b)ackup, (a)bort.",
    )


cert: Callable[..., Option] = partial(
    PipOption,
    "--cert",
    dest="cert",
    type="path",
    metavar="path",
    help=(
        "Path to PEM-encoded CA certificate bundle. "
        "If provided, overrides the default. "
        "See 'SSL Certificate Verification' in pip documentation "
        "for more information."
    ),
)

client_cert: Callable[..., Option] = partial(
    PipOption,
    "--client-cert",
    dest="client_cert",
    type="path",
    default=None,
    metavar="path",
    help="Path to SSL client certificate, a single file containing the "
    "private key and the certificate in PEM format.",
)

index_url: Callable[..., Option] = partial(
    Option,
    "-i",
    "--index-url",
    "--pypi-url",
    dest="index_url",
    metavar="URL",
    default=PyPI.simple_url,
    help="Base URL of the Python Package Index (default %default). "
    "This should point to a repository compliant with PEP 503 "
    "(the simple repository API) or a local directory laid out "
    "in the same format.",
)


def extra_index_url() -> Option:
    return Option(
        "--extra-index-url",
        dest="extra_index_urls",
        metavar="URL",
        action="append",
        default=[],
        help="Extra URLs of package indexes to use in addition to "
        "--index-url. Should follow the same rules as "
        "--index-url.",
    )


no_index: Callable[..., Option] = partial(
    Option,
    "--no-index",
    dest="no_index",
    action="store_true",
    default=False,
    help="Ignore package index (only looking at --find-links URLs instead).",
)


def find_links() -> Option:
    return Option(
        "-f",
        "--find-links",
        dest="find_links",
        action="append",
        default=[],
        metavar="url",
        help="If a URL or path to an html file, then parse for links to "
        "archives such as sdist (.tar.gz) or wheel (.whl) files. "
        "If a local path or file:// URL that's a directory, "
        "then look for archives in the directory listing. "
        "Links to VCS project URLs are not supported.",
    )


def trusted_host() -> Option:
    return Option(
        "--trusted-host",
        dest="trusted_hosts",
        action="append",
        metavar="HOSTNAME",
        default=[],
        help="Mark this host or host:port pair as trusted, even though it "
        "does not have valid or any HTTPS.",
    )


def constraints() -> Option:
    return Option(
        "-c",
        "--constraint",
        dest="constraints",
        action="append",
        default=[],
        metavar="file",
        help="Constrain versions using the given constraints file. "
        "This option can be used multiple times.",
    )


def requirements() -> Option:
    return Option(
        "-r",
        "--requirement",
        dest="requirements",
        action="append",
        default=[],
        metavar="file",
        help="Install from the given requirements file. "
        "This option can be used multiple times.",
    )


def editable() -> Option:
    return Option(
        "-e",
        "--editable",
        dest="editables",
        action="append",
        default=[],
        metavar="path/url",
        help=(
            "Install a project in editable mode (i.e. setuptools "
            '"develop mode") from a local project path or a VCS url.'
        ),
    )


def _handle_src(option: Option, opt_str: str, value: str, parser: OptionParser) -> None:
    value = os.path.abspath(value)
    setattr(parser.values, option.dest, value)


src: Callable[..., Option] = partial(
    PipOption,
    "--src",
    "--source",
    "--source-dir",
    "--source-directory",
    dest="src_dir",
    type="path",
    metavar="dir",
    default=get_src_prefix(),
    action="callback",
    callback=_handle_src,
    help="Directory to check out editable projects into. "
    'The default in a virtualenv is "<venv path>/src". '
    'The default for global installs is "<current dir>/src".',
)


def _get_format_control(values: Values, option: Option) -> Any:
    """Get a format_control object."""
    return getattr(values, option.dest)


def _handle_no_binary(
    option: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
    existing = _get_format_control(parser.values, option)
    FormatControl.handle_mutual_excludes(
        value,
        existing.no_binary,
        existing.only_binary,
    )


def _handle_only_binary(
    option: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
    existing = _get_format_control(parser.values, option)
    FormatControl.handle_mutual_excludes(
        value,
        existing.only_binary,
        existing.no_binary,
    )


def no_binary() -> Option:
    format_control = FormatControl(set(), set())
    return Option(
        "--no-binary",
        dest="format_control",
        action="callback",
        callback=_handle_no_binary,
        type="str",
        default=format_control,
        help="Do not use binary packages. Can be supplied multiple times, and "
        'each time adds to the existing value. Accepts either ":all:" to '
        'disable all binary packages, ":none:" to empty the set (notice '
        "the colons), or one or more package names with commas between "
        "them (no colons). Note that some packages are tricky to compile "
        "and may fail to install when this option is used on them.",
    )


def only_binary() -> Option:
    format_control = FormatControl(set(), set())
    return Option(
        "--only-binary",
        dest="format_control",
        action="callback",
        callback=_handle_only_binary,
        type="str",
        default=format_control,
        help="Do not use source packages. Can be supplied multiple times, and "
        'each time adds to the existing value. Accepts either ":all:" to '
        'disable all source packages, ":none:" to empty the set, or one '
        "or more package names with commas between them. Packages "
        "without binary distributions will fail to install when this "
        "option is used on them.",
    )


platforms: Callable[..., Option] = partial(
    Option,
    "--platform",
    dest="platforms",
    metavar="platform",
    action="append",
    default=None,
    help=(
        "Only use wheels compatible with <platform>. Defaults to the "
        "platform of the running system. Use this option multiple times to "
        "specify multiple platforms supported by the target interpreter."
    ),
)


# This was made a separate function for unit-testing purposes.
def _convert_python_version(value: str) -> Tuple[Tuple[int, ...], Optional[str]]:
    """
    Convert a version string like "3", "37", or "3.7.3" into a tuple of ints.

    :return: A 2-tuple (version_info, error_msg), where `error_msg` is
        non-None if and only if there was a parsing error.
    """
    if not value:
        # The empty string is the same as not providing a value.
        return (None, None)

    parts = value.split(".")
    if len(parts) > 3:
        return ((), "at most three version parts are allowed")

    if len(parts) == 1:
        # Then we are in the case of "3" or "37".
        value = parts[0]
        if len(value) > 1:
            parts = [value[0], value[1:]]

    try:
        version_info = tuple(int(part) for part in parts)
    except ValueError:
        return ((), "each version part must be an integer")

    return (version_info, None)


def _handle_python_version(
    option: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
    """
    Handle a provided --python-version value.
    """
    version_info, error_msg = _convert_python_version(value)
    if error_msg is not None:
        msg = f"invalid --python-version value: {value!r}: {error_msg}"
        raise_option_error(parser, option=option, msg=msg)

    parser.values.python_version = version_info


python_version: Callable[..., Option] = partial(
    Option,
    "--python-version",
    dest="python_version",
    metavar="python_version",
    action="callback",
    callback=_handle_python_version,
    type="str",
    default=None,
    help=dedent(
        """\
    The Python interpreter version to use for wheel and "Requires-Python"
    compatibility checks. Defaults to a version derived from the running
    interpreter. The version can be specified using up to three dot-separated
    integers (e.g. "3" for 3.0.0, "3.7" for 3.7.0, or "3.7.3"). A major-minor
    version can also be given as a string without dots (e.g. "37" for 3.7.0).
    """
    ),
)


implementation: Callable[..., Option] = partial(
    Option,
    "--implementation",
    dest="implementation",
    metavar="implementation",
    default=None,
    help=(
        "Only use wheels compatible with Python "
        "implementation <implementation>, e.g. 'pp', 'jy', 'cp', "
        " or 'ip'. If not specified, then the current "
        "interpreter implementation is used.  Use 'py' to force "
        "implementation-agnostic wheels."
    ),
)


abis: Callable[..., Option] = partial(
    Option,
    "--abi",
    dest="abis",
    metavar="abi",
    action="append",
    default=None,
    help=(
        "Only use wheels compatible with Python abi <abi>, e.g. 'pypy_41'. "
        "If not specified, then the current interpreter abi tag is used. "
        "Use this option multiple times to specify multiple abis supported "
        "by the target interpreter. Generally you will need to specify "
        "--implementation, --platform, and --python-version when using this "
        "option."
    ),
)


def add_target_python_options(cmd_opts: OptionGroup) -> None:
    cmd_opts.add_option(platforms())
    cmd_opts.add_option(python_version())
    cmd_opts.add_option(implementation())
    cmd_opts.add_option(abis())


def make_target_python(options: Values) -> TargetPython:
    target_python = TargetPython(
        platforms=options.platforms,
        py_version_info=options.python_version,
        abis=options.abis,
        implementation=options.implementation,
    )

    return target_python


def prefer_binary() -> Option:
    return Option(
        "--prefer-binary",
        dest="prefer_binary",
        action="store_true",
        default=False,
        help=(
            "Prefer binary packages over source packages, even if the "
            "source packages are newer."
        ),
    )


cache_dir: Callable[..., Option] = partial(
    PipOption,
    "--cache-dir",
    dest="cache_dir",
    default=USER_CACHE_DIR,
    metavar="dir",
    type="path",
    help="Store the cache data in <dir>.",
)


def _handle_no_cache_dir(
    option: Option, opt: str, value: str, parser: OptionParser
) -> None:
    """
    Process a value provided for the --no-cache-dir option.

    This is an optparse.Option callback for the --no-cache-dir option.
    """
    # The value argument will be None if --no-cache-dir is passed via the
    # command-line, since the option doesn't accept arguments.  However,
    # the value can be non-None if the option is triggered e.g. by an
    # environment variable, like PIP_NO_CACHE_DIR=true.
    if value is not None:
        # Then parse the string value to get argument error-checking.
        try:
            strtobool(value)
        except ValueError as exc:
            raise_option_error(parser, option=option, msg=str(exc))

    # Originally, setting PIP_NO_CACHE_DIR to a value that strtobool()
    # converted to 0 (like "false" or "no") caused cache_dir to be disabled
    # rather than enabled (logic would say the latter).  Thus, we disable
    # the cache directory not just on values that parse to True, but (for
    # backwards compatibility reasons) also on values that parse to False.
    # In other words, always set it to False if the option is provided in
    # some (valid) form.
    parser.values.cache_dir = False


no_cache: Callable[..., Option] = partial(
    Option,
    "--no-cache-dir",
    dest="cache_dir",
    action="callback",
    callback=_handle_no_cache_dir,
    help="Disable the cache.",
)

no_deps: Callable[..., Option] = partial(
    Option,
    "--no-deps",
    "--no-dependencies",
    dest="ignore_dependencies",
    action="store_true",
    default=False,
    help="Don't install package dependencies.",
)

ignore_requires_python: Callable[..., Option] = partial(
    Option,
    "--ignore-requires-python",
    dest="ignore_requires_python",
    action="store_true",
    help="Ignore the Requires-Python information.",
)

no_build_isolation: Callable[..., Option] = partial(
    Option,
    "--no-build-isolation",
    dest="build_isolation",
    action="store_false",
    default=True,
    help="Disable isolation when building a modern source distribution. "
    "Build dependencies specified by PEP 518 must be already installed "
    "if this option is used.",
)

check_build_deps: Callable[..., Option] = partial(
    Option,
    "--check-build-dependencies",
    dest="check_build_deps",
    action="store_true",
    default=False,
    help="Check the build dependencies when PEP517 is used.",
)


def _handle_no_use_pep517(
    option: Option, opt: str, value: str, parser: OptionParser
) -> None:
    """
    Process a value provided for the --no-use-pep517 option.

    This is an optparse.Option callback for the no_use_pep517 option.
    """
    # Since --no-use-pep517 doesn't accept arguments, the value argument
    # will be None if --no-use-pep517 is passed via the command-line.
    # However, the value can be non-None if the option is triggered e.g.
    # by an environment variable, for example "PIP_NO_USE_PEP517=true".
    if value is not None:
        msg = """A value was passed for --no-use-pep517,
        probably using either the PIP_NO_USE_PEP517 environment variable
        or the "no-use-pep517" config file option. Use an appropriate value
        of the PIP_USE_PEP517 environment variable or the "use-pep517"
        config file option instead.
        """
        raise_option_error(parser, option=option, msg=msg)

    # If user doesn't wish to use pep517, we check if setuptools and wheel are installed
    # and raise error if it is not.
    packages = ("setuptools", "wheel")
    if not all(importlib.util.find_spec(package) for package in packages):
        msg = (
            f"It is not possible to use --no-use-pep517 "
            f"without {' and '.join(packages)} installed."
        )
        raise_option_error(parser, option=option, msg=msg)

    # Otherwise, --no-use-pep517 was passed via the command-line.
    parser.values.use_pep517 = False


use_pep517: Any = partial(
    Option,
    "--use-pep517",
    dest="use_pep517",
    action="store_true",
    default=None,
    help="Use PEP 517 for building source distributions "
    "(use --no-use-pep517 to force legacy behaviour).",
)

no_use_pep517: Any = partial(
    Option,
    "--no-use-pep517",
    dest="use_pep517",
    action="callback",
    callback=_handle_no_use_pep517,
    default=None,
    help=SUPPRESS_HELP,
)


def _handle_config_settings(
    option: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
    key, sep, val = value.partition("=")
    if sep != "=":
        parser.error(f"Arguments to {opt_str} must be of the form KEY=VAL")
    dest = getattr(parser.values, option.dest)
    if dest is None:
        dest = {}
        setattr(parser.values, option.dest, dest)
    if key in dest:
        if isinstance(dest[key], list):
            dest[key].append(val)
        else:
            dest[key] = [dest[key], val]
    else:
        dest[key] = val


config_settings: Callable[..., Option] = partial(
    Option,
    "-C",
    "--config-settings",
    dest="config_settings",
    type=str,
    action="callback",
    callback=_handle_config_settings,
    metavar="settings",
    help="Configuration settings to be passed to the PEP 517 build backend. "
    "Settings take the form KEY=VALUE. Use multiple --config-settings options "
    "to pass multiple keys to the backend.",
)

build_options: Callable[..., Option] = partial(
    Option,
    "--build-option",
    dest="build_options",
    metavar="options",
    action="append",
    help="Extra arguments to be supplied to 'setup.py bdist_wheel'.",
)

global_options: Callable[..., Option] = partial(
    Option,
    "--global-option",
    dest="global_options",
    action="append",
    metavar="options",
    help="Extra global options to be supplied to the setup.py "
    "call before the install or bdist_wheel command.",
)

no_clean: Callable[..., Option] = partial(
    Option,
    "--no-clean",
    action="store_true",
    default=False,
    help="Don't clean up build directories.",
)

pre: Callable[..., Option] = partial(
    Option,
    "--pre",
    action="store_true",
    default=False,
    help="Include pre-release and development versions. By default, "
    "pip only finds stable versions.",
)

disable_pip_version_check: Callable[..., Option] = partial(
    Option,
    "--disable-pip-version-check",
    dest="disable_pip_version_check",
    action="store_true",
    default=True,
    help="Don't periodically check PyPI to determine whether a new version "
    "of pip is available for download. Implied with --no-index.",
)

root_user_action: Callable[..., Option] = partial(
    Option,
    "--root-user-action",
    dest="root_user_action",
    default="warn",
    choices=["warn", "ignore"],
    help="Action if pip is run as a root user. By default, a warning message is shown.",
)


def _handle_merge_hash(
    option: Option, opt_str: str, value: str, parser: OptionParser
) -> None:
    """Given a value spelled "algo:digest", append the digest to a list
    pointed to in a dict by the algo name."""
    if not parser.values.hashes:
        parser.values.hashes = {}
    try:
        algo, digest = value.split(":", 1)
    except ValueError:
        parser.error(
            f"Arguments to {opt_str} must be a hash name "
            "followed by a value, like --hash=sha256:"
            "abcde..."
        )
    if algo not in STRONG_HASHES:
        parser.error(
            "Allowed hash algorithms for {} are {}.".format(
                opt_str, ", ".join(STRONG_HASHES)
            )
        )
    parser.values.hashes.setdefault(algo, []).append(digest)


hash: Callable[..., Option] = partial(
    Option,
    "--hash",
    # Hash values eventually end up in InstallRequirement.hashes due to
    # __dict__ copying in process_line().
    dest="hashes",
    action="callback",
    callback=_handle_merge_hash,
    type="string",
    help="Verify that the package's archive matches this "
    "hash before installing. Example: --hash=sha256:abcdef...",
)


require_hashes: Callable[..., Option] = partial(
    Option,
    "--require-hashes",
    dest="require_hashes",
    action="store_true",
    default=False,
    help="Require a hash to check each requirement against, for "
    "repeatable installs. This option is implied when any package in a "
    "requirements file has a --hash option.",
)


list_path: Callable[..., Option] = partial(
    PipOption,
    "--path",
    dest="path",
    type="path",
    action="append",
    help="Restrict to the specified installation path for listing "
    "packages (can be used multiple times).",
)


def check_list_path_option(options: Values) -> None:
    if options.path and (options.user or options.local):
        raise CommandError("Cannot combine '--path' with '--user' or '--local'")


list_exclude: Callable[..., Option] = partial(
    PipOption,
    "--exclude",
    dest="excludes",
    action="append",
    metavar="package",
    type="package_name",
    help="Exclude specified package from the output",
)


no_python_version_warning: Callable[..., Option] = partial(
    Option,
    "--no-python-version-warning",
    dest="no_python_version_warning",
    action="store_true",
    default=False,
    help="Silence deprecation warnings for upcoming unsupported Pythons.",
)


# Features that are now always on. A warning is printed if they are used.
ALWAYS_ENABLED_FEATURES = [
    "no-binary-enable-wheel-cache",  # always on since 23.1
]

use_new_feature: Callable[..., Option] = partial(
    Option,
    "--use-feature",
    dest="features_enabled",
    metavar="feature",
    action="append",
    default=[],
    choices=[
        "fast-deps",
        "truststore",
    ]
    + ALWAYS_ENABLED_FEATURES,
    help="Enable new functionality, that may be backward incompatible.",
)

use_deprecated_feature: Callable[..., Option] = partial(
    Option,
    "--use-deprecated",
    dest="deprecated_features_enabled",
    metavar="feature",
    action="append",
    default=[],
    choices=[
        "legacy-resolver",
    ],
    help=("Enable deprecated functionality, that will be removed in the future."),
)


##########
# groups #
##########

general_group: Dict[str, Any] = {
    "name": "General Options",
    "options": [
        help_,
        debug_mode,
        isolated_mode,
        require_virtualenv,
        python,
        verbose,
        version,
        quiet,
        log,
        no_input,
        keyring_provider,
        proxy,
        retries,
        timeout,
        exists_action,
        trusted_host,
        cert,
        client_cert,
        cache_dir,
        no_cache,
        disable_pip_version_check,
        no_color,
        no_python_version_warning,
        use_new_feature,
        use_deprecated_feature,
    ],
}

index_group: Dict[str, Any] = {
    "name": "Package Index Options",
    "options": [
        index_url,
        extra_index_url,
        no_index,
        find_links,
    ],
}
¿Qué es la limpieza dental de perros? - Clínica veterinaria


Es la eliminación del sarro y la placa adherida a la superficie de los dientes mediante un equipo de ultrasonidos que garantiza la integridad de las piezas dentales a la vez que elimina en profundidad cualquier resto de suciedad.

A continuación se procede al pulido de los dientes mediante una fresa especial que elimina la placa bacteriana y devuelve a los dientes el aspecto sano que deben tener.

Una vez terminado todo el proceso, se mantiene al perro en observación hasta que se despierta de la anestesia, bajo la atenta supervisión de un veterinario.

¿Cada cuánto tiempo tengo que hacerle una limpieza dental a mi perro?

A partir de cierta edad, los perros pueden necesitar una limpieza dental anual o bianual. Depende de cada caso. En líneas generales, puede decirse que los perros de razas pequeñas suelen acumular más sarro y suelen necesitar una atención mayor en cuanto a higiene dental.


Riesgos de una mala higiene


Los riesgos más evidentes de una mala higiene dental en los perros son los siguientes:

  • Cuando la acumulación de sarro no se trata, se puede producir una inflamación y retracción de las encías que puede descalzar el diente y provocar caídas.
  • Mal aliento (halitosis).
  • Sarro perros
  • Puede ir a más
  • Las bacterias de la placa pueden trasladarse a través del torrente circulatorio a órganos vitales como el corazón ocasionando problemas de endocarditis en las válvulas. Las bacterias pueden incluso acantonarse en huesos (La osteomielitis es la infección ósea, tanto cortical como medular) provocando mucho dolor y una artritis séptica).

¿Cómo se forma el sarro?

El sarro es la calcificación de la placa dental. Los restos de alimentos, junto con las bacterias presentes en la boca, van a formar la placa bacteriana o placa dental. Si la placa no se retira, al mezclarse con la saliva y los minerales presentes en ella, reaccionará formando una costra. La placa se calcifica y se forma el sarro.

El sarro, cuando se forma, es de color blanquecino pero a medida que pasa el tiempo se va poniendo amarillo y luego marrón.

Síntomas de una pobre higiene dental
La señal más obvia de una mala salud dental canina es el mal aliento.

Sin embargo, a veces no es tan fácil de detectar
Y hay perros que no se dejan abrir la boca por su dueño. Por ejemplo…

Recientemente nos trajeron a la clínica a un perro que parpadeaba de un ojo y decía su dueño que le picaba un lado de la cara. Tenía molestias y dificultad para comer, lo que había llevado a sus dueños a comprarle comida blanda (que suele ser un poco más cara y llevar más contenido en grasa) durante medio año. Después de una exploración oftalmológica, nos dimos cuenta de que el ojo tenía una úlcera en la córnea probablemente de rascarse . Además, el canto lateral del ojo estaba inflamado. Tenía lo que en humanos llamamos flemón pero como era un perro de pelo largo, no se le notaba a simple vista. Al abrirle la boca nos llamó la atención el ver una muela llena de sarro. Le realizamos una radiografía y encontramos una fístula que llegaba hasta la parte inferior del ojo.

Le tuvimos que extraer la muela. Tras esto, el ojo se curó completamente con unos colirios y una lentilla protectora de úlcera. Afortunadamente, la úlcera no profundizó y no perforó el ojo. Ahora el perro come perfectamente a pesar de haber perdido una muela.

¿Cómo mantener la higiene dental de tu perro?
Hay varias maneras de prevenir problemas derivados de la salud dental de tu perro.

Limpiezas de dientes en casa
Es recomendable limpiar los dientes de tu perro semanal o diariamente si se puede. Existe una gran variedad de productos que se pueden utilizar:

Pastas de dientes.
Cepillos de dientes o dedales para el dedo índice, que hacen más fácil la limpieza.
Colutorios para echar en agua de bebida o directamente sobre el diente en líquido o en spray.

En la Clínica Tus Veterinarios enseñamos a nuestros clientes a tomar el hábito de limpiar los dientes de sus perros desde que son cachorros. Esto responde a nuestro compromiso con la prevención de enfermedades caninas.

Hoy en día tenemos muchos clientes que limpian los dientes todos los días a su mascota, y como resultado, se ahorran el dinero de hacer limpiezas dentales profesionales y consiguen una mejor salud de su perro.


Limpiezas dentales profesionales de perros y gatos

Recomendamos hacer una limpieza dental especializada anualmente. La realizamos con un aparato de ultrasonidos que utiliza agua para quitar el sarro. Después, procedemos a pulir los dientes con un cepillo de alta velocidad y una pasta especial. Hacemos esto para proteger el esmalte.

La frecuencia de limpiezas dentales necesaria varía mucho entre razas. En general, las razas grandes tienen buena calidad de esmalte, por lo que no necesitan hacerlo tan a menudo e incluso pueden pasarse la vida sin requerir una limpieza. Sin embargo, razas pequeñas como el Yorkshire o el Maltés, deben hacérselas todos los años desde cachorros si se quiere conservar sus piezas dentales.

Otro factor fundamental es la calidad del pienso. Algunas marcas han diseñado croquetas que limpian la superficie del diente y de la muela al masticarse.

Ultrasonido para perros

¿Se necesita anestesia para las limpiezas dentales de perros y gatos?

La limpieza dental en perros no es una técnica que pueda practicarse sin anestesia general , aunque hay veces que los propietarios no quieren anestesiar y si tiene poco sarro y el perro es muy bueno se puede intentar…… , pero no se va a poder pulir ni acceder a todas la zona de la boca …. Además los limpiadores dentales van a irrigar agua y hay riesgo de aspiración a vías respiratorias si no se realiza una anestesia correcta con intubación traqueal . En resumen , sin anestesia no se va hacer una correcta limpieza dental.

Tampoco sirve la sedación ya que necesitamos que el animal esté totalmente quieto, y el veterinario tenga un acceso completo a todas sus piezas dentales y encías.

Alimentos para la limpieza dental

Hay que tener cierto cuidado a la hora de comprar determinados alimentos porque no todos son saludables. Algunos tienen demasiado contenido graso, que en exceso puede causar problemas cardiovasculares y obesidad.

Los mejores alimentos para los dientes son aquellos que están elaborados por empresas farmacéuticas y llevan componentes químicos con tratamientos específicos para el diente del perro. Esto implica no solo limpieza a través de la acción mecánica de morder sino también un tratamiento antibacteriano para prevenir el sarro.

Conclusión

Si eres como la mayoría de dueños, por falta de tiempo , es probable que no estés prestando la suficiente atención a la limpieza dental de tu perro. Por eso te animamos a que comiences a limpiar los dientes de tu perro y consideres atender a su higiene bucal con frecuencia.

Estas simples medidas pueden conllevar a que tu perro tenga una vida más larga y mucho más saludable.

Si te resulta imposible introducir un cepillo de dientes a tu perro en la boca, pásate con él por clínica Tus Veterinarios y te explicamos cómo hacerlo.

Necesitas hacer una limpieza dental profesional a tu mascota?
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