Python pip.wheel 模块，supported() 实例源码

我们从Python开源项目中，提取了以下18个代码示例，用于说明如何使用pip.wheel.supported()。

项目：Flask_Blog 作者：sugarguo | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：hostapd-mana 作者：adde88 | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：flasky 作者：RoseOu | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：chihu 作者：yelongyu | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：Price-Comparator 作者：Thejas-1 | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：sslstrip-hsts-openwrt 作者：adde88 | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：Flask-NvRay-Blog 作者：rui7157 | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：Callandtext 作者：iaora | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：NeuroMobile 作者：AndrewADykman | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：python_ddd_flask 作者：igorvinnicius | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：Sudoku-Solver 作者：ayush1997 | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：youtube-trending-music 作者：ishan-nitj | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：kbe_server 作者：xiaohaoppy | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：micro-blog 作者：nickChenyx | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：MyFriend-Rob 作者：lcheniv | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：twitter_word_count 作者：prrateekk | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：Alfred 作者：jkachhadia | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)

项目：BD_T2 作者：jfmolano1587 | 项目源码 | 文件源码

def from_line(cls, name, comes_from=None, prereleases=None):
        """Creates an InstallRequirement from a name, which might be a
        requirement, directory containing 'setup.py', filename, or URL.
        """
        url = None
        name = name.strip()
        req = None
        path = os.path.normpath(os.path.abspath(name))
        link = None

        if is_url(name):
            link = Link(name)
        elif os.path.isdir(path) and (os.path.sep in name or name.startswith('.')):
            if not is_installable_dir(path):
                raise InstallationError("Directory %r is not installable. File 'setup.py' not found." % name)
            link = Link(path_to_url(name))
        elif is_archive_file(path):
            if not os.path.isfile(path):
                logger.warn('Requirement %r looks like a filename, but the file does not exist', name)
            link = Link(path_to_url(name))

        # If the line has an egg= definition, but isn't editable, pull the requirement out.
        # Otherwise, assume the name is the req for the non URL/path/archive case.
        if link and req is None:
            url = link.url_without_fragment
            req = link.egg_fragment  #when fragment is None, this will become an 'unnamed' requirement

            # Handle relative file URLs
            if link.scheme == 'file' and re.search(r'\.\./', url):
                url = path_to_url(os.path.normpath(os.path.abspath(link.path)))

            # fail early for invalid or unsupported wheels
            if link.ext == wheel_ext:
                wheel = Wheel(link.filename) # can raise InvalidWheelFilename
                if not wheel.supported():
                    raise UnsupportedWheel("%s is not a supported wheel on this platform." % wheel.filename)

        else:
            req = name

        return cls(req, comes_from, url=url, prereleases=prereleases)