Python specifiers.Specifier方法代碼示例

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def specs_to_string(specs):
    # type: (List[Union[STRING_TYPE, Specifier]]) -> AnyStr
    """Turn a list of specifier tuples into a string

    :param List[Union[Specifier, str]] specs: a list of specifiers to format
    :return: A string of specifiers
    :rtype: str
    """

    if specs:
        if isinstance(specs, six.string_types):
            return specs
        try:
            extras = ",".join(["".join(spec) for spec in specs])
        except TypeError:
            extras = ",".join(["".join(spec._spec) for spec in specs])  # type: ignore
        return extras
    return "" 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def fix_requires_python_marker(requires_python):
    from packaging.requirements import Requirement as PackagingRequirement

    marker_str = ""
    if any(requires_python.startswith(op) for op in Specifier._operators.keys()):
        spec_dict = defaultdict(set)
        # We are checking first if we have  leading specifier operator
        # if not, we can assume we should be doing a == comparison
        specifierset = list(SpecifierSet(requires_python))
        # for multiple specifiers, the correct way to represent that in
        # a specifierset is `Requirement('fakepkg; python_version<"3.0,>=2.6"')`
        marker_key = Variable("python_version")
        for spec in specifierset:
            operator, val = spec._spec
            cleaned_val = Value(val).serialize().replace('"', "")
            spec_dict[Op(operator).serialize()].add(cleaned_val)
        marker_str = " and ".join(
            [
                "{0}{1}'{2}'".format(marker_key.serialize(), op, ",".join(vals))
                for op, vals in spec_dict.items()
            ]
        )
    marker_to_add = PackagingRequirement("fakepkg; {0}".format(marker_str)).marker
    return marker_to_add 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def get_versions(specset, group_by_operator=True):
    # type: (Union[Set[Specifier], SpecifierSet], bool) -> List[Tuple[STRING_TYPE, STRING_TYPE]]
    specs = [_get_specs(x) for x in list(tuple(specset))]
    initial_sort_key = lambda k: (k[0], k[1])
    initial_grouping_key = operator.itemgetter(0)
    if not group_by_operator:
        initial_grouping_key = operator.itemgetter(1)
        initial_sort_key = operator.itemgetter(1)
    version_tuples = sorted(
        set((op, version) for spec in specs for op, version in spec), key=initial_sort_key
    )
    version_tuples = [fix_version_tuple(t) for t in version_tuples]
    op_groups = [
        (grp, list(map(operator.itemgetter(1), keys)))
        for grp, keys in itertools.groupby(version_tuples, key=initial_grouping_key)
    ]
    versions = [
        (op, packaging.version.parse(".".join(str(v) for v in val)))
        for op, vals in op_groups
        for val in vals
    ]
    return sorted(versions, key=operator.itemgetter(1)) 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def _split_specifierset_str(specset_str, prefix="=="):
    # type: (str, str) -> Set[Specifier]
    """
    Take a specifierset string and split it into a list to join for specifier sets

    :param str specset_str: A string containing python versions, often comma separated
    :param str prefix: A prefix to use when generating the specifier set
    :return: A list of :class:`Specifier` instances generated with the provided prefix
    :rtype: Set[Specifier]
    """
    specifiers = set()
    if "," not in specset_str and " " in specset_str:
        values = [v.strip() for v in specset_str.split()]
    else:
        values = [v.strip() for v in specset_str.split(",")]
    if prefix == "!=" and any(v in values for v in DEPRECATED_VERSIONS):
        values += DEPRECATED_VERSIONS[:]
    for value in sorted(values):
        specifiers.add(Specifier("{0}{1}".format(prefix, value)))
    return specifiers 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def _get_specifiers_from_markers(marker_item):
    """
    Given a marker item, get specifiers from the version marker

    :param :class:`~packaging.markers.Marker` marker_sequence: A marker describing a version constraint
    :return: A set of specifiers corresponding to the marker constraint
    :rtype: Set[Specifier]
    """
    specifiers = set()
    if isinstance(marker_item, tuple):
        variable, op, value = marker_item
        if variable.value != "python_version":
            return specifiers
        if op.value == "in":
            specifiers.update(_split_specifierset_str(value.value, prefix="=="))
        elif op.value == "not in":
            specifiers.update(_split_specifierset_str(value.value, prefix="!="))
        else:
            specifiers.add(Specifier("{0}{1}".format(op.value, value.value)))
    elif isinstance(marker_item, list):
        parts = get_specset(marker_item)
        if parts:
            specifiers.update(parts)
    return specifiers 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def pyspec_from_markers(marker):
    if marker._markers[0][0] != 'python_version':
        return
    op = marker._markers[0][1].value
    version = marker._markers[0][2].value
    specset = set()
    if op == "in":
        specset.update(
            Specifier("=={0}".format(v.strip()))
            for v in version.split(",")
        )
    elif op == "not in":
        specset.update(
            Specifier("!={0}".format(v.strip()))
            for v in version.split(",")
        )
    else:
        specset.add(Specifier("".join([op, version])))
    if specset:
        return specset
    return None 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def _format_pyspec(specifier):
    if isinstance(specifier, str):
        if not any(op in specifier for op in Specifier._operators.keys()):
            specifier = "=={0}".format(specifier)
        specifier = Specifier(specifier)
    if specifier.operator == "==" and specifier.version.endswith(".*"):
        specifier = Specifier("=={0}".format(specifier.version[:-2]))
    try:
        op = REPLACE_RANGES[specifier.operator]
    except KeyError:
        return specifier
    version = specifier.version.replace(".*", "")
    curr_tuple = _tuplize_version(version)
    try:
        next_tuple = (curr_tuple[0], curr_tuple[1] + 1)
    except IndexError:
        next_tuple = (curr_tuple[0], 1)
    specifier = Specifier("{0}{1}".format(op, _format_version(next_tuple)))
    return specifier 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def default(self, obj):  # noqa:E0202 # noqa:W0221
        if isinstance(obj, datetime.datetime):
            return obj.isoformat()
        elif isinstance(obj, PackagingRequirement):
            return obj.__dict__
        elif isinstance(obj, set):
            return tuple(obj)
        elif isinstance(obj, (Specifier, SpecifierSet, Marker)):
            return str(obj)
        else:
            return json.JSONEncoder.default(self, obj) 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def _format_pyspec(specifier):
    # type: (Union[STRING_TYPE, Specifier]) -> Specifier
    if isinstance(specifier, str):
        if not any(op in specifier for op in Specifier._operators.keys()):
            specifier = "=={0}".format(specifier)
        specifier = Specifier(specifier)
    version = getattr(specifier, "version", specifier).rstrip()
    if version and version.endswith("*"):
        if version.endswith(".*"):
            version = version[:-2]
        version = version.rstrip("*")
        specifier = Specifier("{0}{1}".format(specifier.operator, version))
    try:
        op = REPLACE_RANGES[specifier.operator]
    except KeyError:
        return specifier
    curr_tuple = _tuplize_version(version)
    try:
        next_tuple = (curr_tuple[0], curr_tuple[1] + 1)
    except IndexError:
        next_tuple = (curr_tuple[0], 1)
    if not next_tuple[1] <= MAX_VERSIONS[next_tuple[0]]:
        if specifier.operator == "<" and curr_tuple[1] <= MAX_VERSIONS[next_tuple[0]]:
            op = "<="
            next_tuple = (next_tuple[0], curr_tuple[1])
        else:
            return specifier
    specifier = Specifier("{0}{1}".format(op, _format_version(next_tuple)))
    return specifier 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def _get_specs(specset):
    if specset is None:
        return
    if is_instance(specset, Specifier):
        new_specset = SpecifierSet()
        specs = set()
        specs.add(specset)
        new_specset._specs = frozenset(specs)
        specset = new_specset
    if isinstance(specset, str):
        specset = SpecifierSet(specset)
    result = []
    for spec in set(specset):
        version = spec.version
        op = spec.operator
        if op in ("in", "not in"):
            versions = version.split(",")
            op = "==" if op == "in" else "!="
            for ver in versions:
                result.append((op, _tuplize_version(ver.strip())))
        else:
            result.append((spec.operator, _tuplize_version(spec.version)))
    return sorted(result, key=operator.itemgetter(1))


# TODO: Rename this to something meaningful 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def normalize_specifier_set(specs):
    # type: (Union[str, SpecifierSet]) -> Optional[Set[Specifier]]
    """Given a specifier set, a string, or an iterable, normalize the specifiers

    .. note:: This function exists largely to deal with ``pyzmq`` which handles
        the ``requires_python`` specifier incorrectly, using ``3.7*`` rather than
        the correct form of ``3.7.*``.  This workaround can likely go away if
        we ever introduce enforcement for metadata standards on PyPI.

    :param Union[str, SpecifierSet] specs: Supplied specifiers to normalize
    :return: A new set of specifiers or specifierset
    :rtype: Union[Set[Specifier], :class:`~packaging.specifiers.SpecifierSet`]
    """
    if not specs:
        return None
    if isinstance(specs, set):
        return specs
    # when we aren't dealing with a string at all, we can normalize this as usual
    elif not isinstance(specs, six.string_types):
        return {_format_pyspec(spec) for spec in specs}
    spec_list = []
    for spec in specs.split(","):
        spec = spec.strip()
        if spec.endswith(".*"):
            spec = spec[:-2]
        spec = spec.rstrip("*")
        spec_list.append(spec)
    return normalize_specifier_set(SpecifierSet(",".join(spec_list)))


# TODO: Check if this is used by anything public otherwise make it private
# And rename it to something meaningful 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def marker_from_specifier(spec):
    # type: (STRING_TYPE) -> Marker
    if not any(spec.startswith(k) for k in Specifier._operators.keys()):
        if spec.strip().lower() in ["any", "<any>", "*"]:
            return None
        spec = "=={0}".format(spec)
    elif spec.startswith("==") and spec.count("=") > 3:
        spec = "=={0}".format(spec.lstrip("="))
    if not spec:
        return None
    marker_segments = []
    for marker_segment in cleanup_pyspecs(spec):
        marker_segments.append(format_pyversion(marker_segment))
    marker_str = " and ".join(marker_segments).replace('"', "'")
    return Marker(marker_str) 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def _get_specs(specset):
    if isinstance(specset, Specifier):
        specset = str(specset)
    if isinstance(specset, str):
        specset = SpecifierSet(specset.replace(".*", ""))
    return [
        (spec._spec[0], _tuplize_version(spec._spec[1]))
        for spec in getattr(specset, "_specs", [])
    ] 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def update_req(req):
    """Updates a given req object with the latest version."""

    if not req.name:
        return req, None

    info = get_package_info(req.name)

    if info['info'].get('_pypi_hidden'):
        print('{} is hidden on PyPI and will not be updated.'.format(req))
        return req, None

    if _is_pinned(req) and _is_version_range(req):
        print('{} is pinned to a range and will not be updated.'.format(req))
        return req, None

    newest_version = _get_newest_version(info)
    current_spec = next(iter(req.specifier)) if req.specifier else None
    current_version = current_spec.version if current_spec else None
    new_spec = Specifier(u'=={}'.format(newest_version))
    if not current_spec or current_spec._spec != new_spec._spec:
        req.specifier = new_spec
        update_info = (
            req.name,
            current_version,
            newest_version)
        return req, update_info
    return req, None 

# 需要導入模塊: from packaging import specifiers [as 別名]
# 或者: from packaging.specifiers import Specifier [as 別名]
def _handle_range_constraints(
    lowest_less_than: Specifier, greatest_greater_than: Specifier
) -> bool:
    """
    Check whether two specifiers of the following type are compatible.

    It is a helper method for the is_satisfiable function and checks:
    - "<=<some-version-number>"
    - ">=<some-version-number>"

    The equality might be optional.

    The pseudo-code is the following:
    - is the version number of the lower-than constraint smaller than the one of
      the greater-than constraint? E.g. we are in cases like "<=1.0" and ">1.1".
      -  If yes, then the constraints are unsatisfiable.
      -  Otherwise, they are satisfiable.
    - are the version numbers the same? E.g. "<=1.0,>=1.0"
      - If yes, if at least one of them is a strict comparison, then return False, otherwise True.
    - otherwise, return True.

    :param lowest_less_than: the less-than constraint.
    :param greatest_greater_than: the greater than constraint.
    :return: False if we are sure the two constraints are not satisfiable, True if we don't know.
    """
    version_less_than = Version(lowest_less_than.version)
    version_greater_than = Version(greatest_greater_than.version)
    if version_less_than < version_greater_than:
        return False
    elif version_greater_than == version_less_than:
        # check if one of them has NOT the equality
        one_of_them_is_a_strict_comparison = (
            greatest_greater_than.operator == ">"
        ) or (lowest_less_than.operator == "<")
        return not one_of_them_is_a_strict_comparison
    else:
        return True