Python os 模块，O_NOINHERIT 实例源码

我们从Python开源项目中，提取了以下13个代码示例，用于说明如何使用os.O_NOINHERIT。

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def writef_win32(f, data, m='w', encoding='ISO8859-1'):
    if sys.hexversion > 0x3000000 and not 'b' in m:
        data = data.encode(encoding)
        m += 'b'
    flags = os.O_CREAT | os.O_TRUNC | os.O_WRONLY | os.O_NOINHERIT
    if 'b' in m:
        flags |= os.O_BINARY
    if '+' in m:
        flags |= os.O_RDWR
    try:
        fd = os.open(f, flags)
    except OSError:
        raise IOError('Cannot write to %r' % f)
    f = os.fdopen(fd, m)
    try:
        f.write(data)
    finally:
        f.close()

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def h_file_win32(fname):
    try:
        fd = os.open(fname, os.O_BINARY | os.O_RDONLY | os.O_NOINHERIT)
    except OSError:
        raise IOError('Cannot read from %r' % fname)
    f = os.fdopen(fd, 'rb')
    m = md5()
    try:
        while fname:
            fname = f.read(200000)
            m.update(fname)
    finally:
        f.close()
    return m.digest()

# always save these

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def writef_win32(f, data, m='w', encoding='ISO8859-1'):
    if sys.hexversion > 0x3000000 and not 'b' in m:
        data = data.encode(encoding)
        m += 'b'
    flags = os.O_CREAT | os.O_TRUNC | os.O_WRONLY | os.O_NOINHERIT
    if 'b' in m:
        flags |= os.O_BINARY
    if '+' in m:
        flags |= os.O_RDWR
    try:
        fd = os.open(f, flags)
    except OSError:
        raise IOError('Cannot write to %r' % f)
    f = os.fdopen(fd, m)
    try:
        f.write(data)
    finally:
        f.close()

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def h_file_win32(fname):
    try:
        fd = os.open(fname, os.O_BINARY | os.O_RDONLY | os.O_NOINHERIT)
    except OSError:
        raise IOError('Cannot read from %r' % fname)
    f = os.fdopen(fd, 'rb')
    m = md5()
    try:
        while fname:
            fname = f.read(200000)
            m.update(fname)
    finally:
        f.close()
    return m.digest()

# always save these

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def writef_win32(f, data, m='w', encoding='ISO8859-1'):
    if sys.hexversion > 0x3000000 and not 'b' in m:
        data = data.encode(encoding)
        m += 'b'
    flags = os.O_CREAT | os.O_TRUNC | os.O_WRONLY | os.O_NOINHERIT
    if 'b' in m:
        flags |= os.O_BINARY
    if '+' in m:
        flags |= os.O_RDWR
    try:
        fd = os.open(f, flags)
    except OSError:
        raise IOError('Cannot write to %r' % f)
    f = os.fdopen(fd, m)
    try:
        f.write(data)
    finally:
        f.close()

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def h_file_win32(fname):
    try:
        fd = os.open(fname, os.O_BINARY | os.O_RDONLY | os.O_NOINHERIT)
    except OSError:
        raise IOError('Cannot read from %r' % fname)
    f = os.fdopen(fd, 'rb')
    m = md5()
    try:
        while fname:
            fname = f.read(200000)
            m.update(fname)
    finally:
        f.close()
    return m.digest()

# always save these

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def init(ctx):
    global LOGFILE
    filename = os.path.abspath(LOGFILE)
    try:
        os.makedirs(os.path.dirname(os.path.abspath(filename)))
    except OSError:
        pass

    if hasattr(os, 'O_NOINHERIT'):
        fd = os.open(LOGFILE, os.O_CREAT | os.O_TRUNC | os.O_WRONLY | os.O_NOINHERIT)
        fileobj = os.fdopen(fd, 'w')
    else:
        fileobj = open(LOGFILE, 'w')
    old_stderr = sys.stderr

    # sys.stdout has already been replaced, so __stdout__ will be faster
    #sys.stdout = log_to_file(sys.stdout, fileobj, filename)
    #sys.stderr = log_to_file(sys.stderr, fileobj, filename)
    def wrap(stream):
        if stream.isatty():
            return ansiterm.AnsiTerm(stream)
        return stream
    sys.stdout = log_to_file(wrap(sys.__stdout__), fileobj, filename)
    sys.stderr = log_to_file(wrap(sys.__stderr__), fileobj, filename)

    # now mess with the logging module...
    for x in Logs.log.handlers:
        try:
            stream = x.stream
        except AttributeError:
            pass
        else:
            if id(stream) == id(old_stderr):
                x.stream = sys.stderr

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def readf_win32(f, m='r', encoding='ISO8859-1'):
    flags = os.O_NOINHERIT | os.O_RDONLY
    if 'b' in m:
        flags |= os.O_BINARY
    if '+' in m:
        flags |= os.O_RDWR
    try:
        fd = os.open(f, flags)
    except OSError:
        raise IOError('Cannot read from %r' % f)

    if sys.hexversion > 0x3000000 and not 'b' in m:
        m += 'b'
        f = os.fdopen(fd, m)
        try:
            txt = f.read()
        finally:
            f.close()
        if encoding:
            txt = txt.decode(encoding)
        else:
            txt = txt.decode()
    else:
        f = os.fdopen(fd, m)
        try:
            txt = f.read()
        finally:
            f.close()
    return txt

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def init(ctx):
    global LOGFILE
    filename = os.path.abspath(LOGFILE)
    try:
        os.makedirs(os.path.dirname(os.path.abspath(filename)))
    except OSError:
        pass

    if hasattr(os, 'O_NOINHERIT'):
        fd = os.open(LOGFILE, os.O_CREAT | os.O_TRUNC | os.O_WRONLY | os.O_NOINHERIT)
        fileobj = os.fdopen(fd, 'w')
    else:
        fileobj = open(LOGFILE, 'w')
    old_stderr = sys.stderr

    # sys.stdout has already been replaced, so __stdout__ will be faster
    #sys.stdout = log_to_file(sys.stdout, fileobj, filename)
    #sys.stderr = log_to_file(sys.stderr, fileobj, filename)
    def wrap(stream):
        if stream.isatty():
            return ansiterm.AnsiTerm(stream)
        return stream
    sys.stdout = log_to_file(wrap(sys.__stdout__), fileobj, filename)
    sys.stderr = log_to_file(wrap(sys.__stderr__), fileobj, filename)

    # now mess with the logging module...
    for x in Logs.log.handlers:
        try:
            stream = x.stream
        except AttributeError:
            pass
        else:
            if id(stream) == id(old_stderr):
                x.stream = sys.stderr

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def readf_win32(f, m='r', encoding='ISO8859-1'):
    flags = os.O_NOINHERIT | os.O_RDONLY
    if 'b' in m:
        flags |= os.O_BINARY
    if '+' in m:
        flags |= os.O_RDWR
    try:
        fd = os.open(f, flags)
    except OSError:
        raise IOError('Cannot read from %r' % f)

    if sys.hexversion > 0x3000000 and not 'b' in m:
        m += 'b'
        f = os.fdopen(fd, m)
        try:
            txt = f.read()
        finally:
            f.close()
        if encoding:
            txt = txt.decode(encoding)
        else:
            txt = txt.decode()
    else:
        f = os.fdopen(fd, m)
        try:
            txt = f.read()
        finally:
            f.close()
    return txt

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def readf_win32(f, m='r', encoding='ISO8859-1'):
    flags = os.O_NOINHERIT | os.O_RDONLY
    if 'b' in m:
        flags |= os.O_BINARY
    if '+' in m:
        flags |= os.O_RDWR
    try:
        fd = os.open(f, flags)
    except OSError:
        raise IOError('Cannot read from %r' % f)

    if sys.hexversion > 0x3000000 and not 'b' in m:
        m += 'b'
        f = os.fdopen(fd, m)
        try:
            txt = f.read()
        finally:
            f.close()
        if encoding:
            txt = txt.decode(encoding)
        else:
            txt = txt.decode()
    else:
        f = os.fdopen(fd, m)
        try:
            txt = f.read()
        finally:
            f.close()
    return txt

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def cached_hash_file(self):
        try:
            cache = self.ctx.cache_listdir_cache_hash_file
        except AttributeError:
            cache = self.ctx.cache_listdir_cache_hash_file = {}

        if id(self.parent) in cache:
            try:
                t = cache[id(self.parent)][self.name]
            except KeyError:
                raise IOError('Not a file')
        else:
            # an opportunity to list the files and the timestamps at once
            findData = ctypes.wintypes.WIN32_FIND_DATAW()
            find     = FindFirstFile(TP % self.parent.abspath(), ctypes.byref(findData))

            if find == INVALID_HANDLE_VALUE:
                cache[id(self.parent)] = {}
                raise IOError('Not a file')

            cache[id(self.parent)] = lst_files = {}
            try:
                while True:
                    if findData.cFileName not in UPPER_FOLDERS:
                        thatsadir = findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY
                        if not thatsadir:
                            ts = findData.ftLastWriteTime
                            d = (ts.dwLowDateTime << 32) | ts.dwHighDateTime
                            lst_files[str(findData.cFileName)] = d
                    if not FindNextFile(find, ctypes.byref(findData)):
                        break
            except Exception:
                cache[id(self.parent)] = {}
                raise IOError('Not a file')
            finally:
                FindClose(find)
            t = lst_files[self.name]

        fname = self.abspath()
        if fname in Build.hashes_md5_tstamp:
            if Build.hashes_md5_tstamp[fname][0] == t:
                return Build.hashes_md5_tstamp[fname][1]

        try:
            fd = os.open(fname, os.O_BINARY | os.O_RDONLY | os.O_NOINHERIT)
        except OSError:
            raise IOError('Cannot read from %r' % fname)
        f = os.fdopen(fd, 'rb')
        m = Utils.md5()
        rb = 1
        try:
            while rb:
                rb = f.read(200000)
                m.update(rb)
        finally:
            f.close()

        # ensure that the cache is overwritten
        Build.hashes_md5_tstamp[fname] = (t, m.digest())
        return m.digest()

项目：SoCFoundationFlow 作者：mattaw | 项目源码 | 文件源码

def cached_hash_file(self):
        try:
            cache = self.ctx.cache_listdir_cache_hash_file
        except AttributeError:
            cache = self.ctx.cache_listdir_cache_hash_file = {}

        if id(self.parent) in cache:
            try:
                t = cache[id(self.parent)][self.name]
            except KeyError:
                raise IOError('Not a file')
        else:
            # an opportunity to list the files and the timestamps at once
            findData = ctypes.wintypes.WIN32_FIND_DATAW()
            find     = FindFirstFile(TP % self.parent.abspath(), ctypes.byref(findData))

            if find == INVALID_HANDLE_VALUE:
                cache[id(self.parent)] = {}
                raise IOError('Not a file')

            cache[id(self.parent)] = lst_files = {}
            try:
                while True:
                    if findData.cFileName not in UPPER_FOLDERS:
                        thatsadir = findData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY
                        if not thatsadir:
                            ts = findData.ftLastWriteTime
                            d = (ts.dwLowDateTime << 32) | ts.dwHighDateTime
                            lst_files[str(findData.cFileName)] = d
                    if not FindNextFile(find, ctypes.byref(findData)):
                        break
            except Exception as e:
                cache[id(self.parent)] = {}
                raise IOError('Not a file')
            finally:
                FindClose(find)
            t = lst_files[self.name]

        fname = self.abspath()
        if fname in Build.hashes_md5_tstamp:
            if Build.hashes_md5_tstamp[fname][0] == t:
                return Build.hashes_md5_tstamp[fname][1]

        try:
            fd = os.open(fname, os.O_BINARY | os.O_RDONLY | os.O_NOINHERIT)
        except OSError:
            raise IOError('Cannot read from %r' % fname)
        f = os.fdopen(fd, 'rb')
        m = Utils.md5()
        rb = 1
        try:
            while rb:
                rb = f.read(200000)
                m.update(rb)
        finally:
            f.close()

        # ensure that the cache is overwritten
        Build.hashes_md5_tstamp[fname] = (t, m.digest())
        return m.digest()