我们从Python开源项目中，提取了以下23个代码示例，用于说明如何使用os.html()。
def run(command): # TODO: replace this with fork() # (https://docs.python.org/2/library/os.html#os.fork) pid = 0 if pid == 0: # This is the child, we'll try to do some containment here try: contain(command) except Exception: traceback.print_exc() os._exit(1) # something went wrong in contain() # This is the parent, pid contains the PID of the forked process # wait for the forked child and fetch the exit status _, status = os.waitpid(pid, 0) print('{} exited with status {}'.format(pid, status))
def _find_files(root_dir, should_include): """ Return a list of paths to all modules below the given directory. Arguments: should_include: a function that accepts a file path and returns True or False. """ paths = [] # Return value. is_module = lambda path: path.endswith(".py") # os.walk() is new in Python 2.3 # http://docs.python.org/library/os.html#os.walk for dir_path, dir_names, file_names in os.walk(root_dir): new_paths = [os.path.join(dir_path, file_name) for file_name in file_names] new_paths = filter(is_module, new_paths) new_paths = filter(should_include, new_paths) paths.extend(new_paths) return paths
def gen_mac(prefix='AC:DE:48'): ''' Generates a MAC address with the defined OUI prefix. Common prefixes: - ``00:16:3E`` -- Xen - ``00:18:51`` -- OpenVZ - ``00:50:56`` -- VMware (manually generated) - ``52:54:00`` -- QEMU/KVM - ``AC:DE:48`` -- PRIVATE References: - http://standards.ieee.org/develop/regauth/oui/oui.txt - https://www.wireshark.org/tools/oui-lookup.html - https://en.wikipedia.org/wiki/MAC_address ''' return '{0}:{1:02X}:{2:02X}:{3:02X}'.format(prefix, random.randint(0, 0xff), random.randint(0, 0xff), random.randint(0, 0xff))
def date_format(date=None, format="%Y-%m-%d"): ''' Converts date into a time-based string date any datetime, time string representation... format :ref:`strftime<http://docs.python.org/2/library/datetime.html#datetime.datetime.strftime>` format >>> import datetime >>> src = datetime.datetime(2002, 12, 25, 12, 00, 00, 00) >>> date_format(src) '2002-12-25' >>> src = '2002/12/25' >>> date_format(src) '2002-12-25' >>> src = 1040814000 >>> date_format(src) '2002-12-25' >>> src = '1040814000' >>> date_format(src) '2002-12-25' ''' return date_cast(date).strftime(format)
def unversioned_sys_platform(): """ Return the unversioned platform name. Some Python platform names contain versions, that depend on the build environment, e.g. linux2, freebsd6, etc. This returns the name without the version number. Exceptions are os2 and win32, which are returned verbatim. :rtype: string :return: Unversioned platform name """ s = sys.platform if s.startswith('java'): # The real OS is hidden under the JVM. from java.lang import System s = System.getProperty('os.name') # see http://lopica.sourceforge.net/os.html for a list of possible values if s == 'Mac OS X': return 'darwin' elif s.startswith('Windows '): return 'win32' elif s == 'OS/2': return 'os2' elif s == 'HP-UX': return 'hp-ux' elif s in ('SunOS', 'Solaris'): return 'sunos' else: s = s.lower() # powerpc == darwin for our purposes if s == 'powerpc': return 'darwin' if s == 'win32' or s == 'os2': return s if s == 'cli' and os.name == 'nt': # ironpython is only on windows as far as we know return 'win32' return re.split('\d+$', s)[0]
def unversioned_sys_platform(): """ Return the unversioned platform name. Some Python platform names contain versions, that depend on the build environment, e.g. linux2, freebsd6, etc. This returns the name without the version number. Exceptions are os2 and win32, which are returned verbatim. :rtype: string :return: Unversioned platform name """ s = sys.platform if s.startswith('java'): # The real OS is hidden under the JVM. from java.lang import System s = System.getProperty('os.name') # see http://lopica.sourceforge.net/os.html for a list of possible values if s == 'Mac OS X': return 'darwin' elif s.startswith('Windows '): return 'win32' elif s == 'OS/2': return 'os2' elif s == 'HP-UX': return 'hp-ux' elif s in ('SunOS', 'Solaris'): return 'sunos' else: s = s.lower() # powerpc == darwin for our purposes if s == 'powerpc': return 'darwin' if s == 'win32' or s == 'os2': return s return re.split('\d+$', s)[0]
def fsync(self): if self._oplog: # https://docs.python.org/2/library/os.html#os.fsync self._oplog.flush() self._last_flush_time = time() self._writes_unflushed = 0 return os.fsync(self._oplog.fileno())
def contain(command): # TODO: exec command, note the difference between the exec flavours # https://docs.python.org/2/library/os.html#os.execv # NOTE: command is an array (the first element is path/file, and the entire # array is exec's args) os._exit(0) # TODO: remove this after adding exec
def setUp(self): """ Defining the exitcodes Expected Exitcodes: On Unix, the return value is the exit status of the process encoded in the format specified for wait() https://docs.python.org/3.5/library/os.html#os.system """ self.exit_0 = 0 << 8 self.exit_1 = 1 << 8 self.exit_2 = 2 << 8
def generate_256bit_key(): """Generate a pseudo-random secure ready-for-crypto-use key. Generate it straight using urandom. Proving randomness is impossible, and a good source is a hotly debated subject. As always, opinions are welcome but please inform yourself first and be prepared to cite a source. Further Reading: https://docs.python.org/3.5/library/os.html#os.urandom https://docs.python.org/2.7/library/os.html#os.urandom https://sockpuppet.org/blog/2014/02/25/safely-generate-random-numbers/ http://www.2uo.de/myths-about-urandom/ https://github.com/dlitz/pycrypto/blob/master/lib/Crypto/Random/__init__.py """ return binascii.hexlify(os.urandom(32))
def html_escape(u): """ An html escape function that behaves the same in both Python 2 and 3. This function is needed because single quotes are escaped in Python 3 (to '''), but not in Python 2. The global defaults.TAG_ESCAPE can be set to this function in the setUp() and tearDown() of unittest test cases, for example, for consistent test results. """ u = _DEFAULT_TAG_ESCAPE(u) return u.replace("'", ''')
def system(): # On some Windows installation (Python 2.4) platform.system() is # broken and incorrectly returns 'Microsoft' instead of 'Windows'. # http://mail.python.org/pipermail/patches/2007-June/022947.html syst = platform.system() if syst == 'Microsoft': return 'Windows' return syst
def machine(): """ Return machine suffix to use in directory name when looking for bootloader. PyInstaller is reported to work even on ARM architecture. For that case functions system() and architecture() are not enough. Path to bootloader has to be composed from system(), architecture() and machine() like: 'Linux-32bit-arm' """ mach = platform.machine() if mach.startswith('arm'): return 'arm' else: # Assume x86/x86_64 machine. return None # Set and get environment variables does not handle unicode strings correctly # on Windows. # Acting on os.environ instead of using getenv()/setenv()/unsetenv(), # as suggested in <http://docs.python.org/library/os.html#os.environ>: # "Calling putenv() directly does not change os.environ, so it's # better to modify os.environ." (Same for unsetenv.)
def run(self): """Run module's code.""" contacts = self._list_contacts() # Output title = "Contacts" header = None output_format = self.get_option_value("OUTPUT_FORMAT").lower() if (output_format == "stdout"): print title self._print_table(contacts) elif (output_format == "html"): if (not os.path.isdir(self.output_dir)): os.mkdir(self.output_dir) output_prefix = self.get_option_value("OUTPUT_FILE_NAME_PREFIX") file_full_path = self.output_dir + "/" + output_prefix + ".html" html.create_document_from_row_list(title, header, contacts, file_full_path) print "Output saved to: " + file_full_path elif (output_format == "pdf"): if (not os.path.isdir(self.output_dir)): os.mkdir(self.output_dir) output_prefix = self.get_option_value("OUTPUT_FILE_NAME_PREFIX") file_full_path = self.output_dir + "/" + output_prefix + ".pdf" pdf.create_document_from_row_list(title, header, contacts, file_full_path) print "Output saved to: " + file_full_path else: print "Unsupported OUTPUT_FORMAT" # *************************************************************** # HELPER methods # ***************************************************************
def run(self): """Run module's code.""" conversations = self._get_conversation_list() # Output title = "Conversation List" header = None output_format = self.get_option_value("OUTPUT_FORMAT").lower() if (output_format == "stdout"): print title self._print_table(conversations) elif (output_format == "html"): if (not os.path.isdir(self.output_dir)): os.mkdir(self.output_dir) output_prefix = self.get_option_value("OUTPUT_FILE_NAME_PREFIX") file_full_path = self.output_dir + "/" + output_prefix + ".html" html.create_document_from_row_list(title, header, conversations, file_full_path) print "Output saved to: " + file_full_path elif (output_format == "pdf"): if (not os.path.isdir(self.output_dir)): os.mkdir(self.output_dir) output_prefix = self.get_option_value("OUTPUT_FILE_NAME_PREFIX") file_full_path = self.output_dir + "/" + output_prefix + ".pdf" pdf.create_document_from_row_list(title, header, conversations, file_full_path) print "Output saved to: " + file_full_path else: print "Unsupported OUTPUT_FORMAT" # *************************************************************** # HELPER methods # ***************************************************************
def get_paths(root, exclude_patterns, include_patterns, has_exceptions=False): paths = [] for parent, dirs, files in os.walk(root, topdown=True, followlinks=False): parent = os.path.relpath(parent, root) if parent == '.': parent = '' # Remove excluded patterns from the list of directories to traverse # by mutating the dirs we're iterating over. # This looks strange, but is considered the correct way to skip # traversal. See https://docs.python.org/2/library/os.html#os.walk dirs[:] = [d for d in dirs if should_check_directory(os.path.join(parent, d), exclude_patterns, include_patterns)] for path in dirs: if should_include(os.path.join(parent, path), exclude_patterns, include_patterns): paths.append(os.path.join(parent, path)) for path in files: if should_include(os.path.join(parent, path), exclude_patterns, include_patterns): paths.append(os.path.join(parent, path)) return paths
def FileWithLocalFilename(filename, writeFile = False): with tempfile.NamedTemporaryFile() as f: try: with FileInMemory(filename) as (success, status, fileInMemory): if success: print("Writing to temporary file") print("success: {}, status: {}".format(success, status)) f.write(fileInMemory.read()) f.flush() #f.write("Hello") # Return to start of file so the read is seamless f.seek(0) # May be required to fully flush, although flush() seems sufficient for now # See: https://docs.python.org/2/library/os.html#os.fsync #os.fsync(f.fileno()) #print("f.read(): {}".format(f.read())) #f.seek(0) yield f.name #print("Post yield") #f.seek(0, os.SEEK_END) #print("f length in with def: {}".format(f.tell())) else: #yield (False, status, fileInMemory) yield False print("Successfully completed FileWithLocalFilename") except IOError as e: # Just need an exception so that else is valid. print("IOError: {}".format(e)) else: # Only do this if there are no exceptions above print("Potentially writing file") if writeFile: (success, status, returnValue) = putFile(filename = filename, file = f) print("Wrote file. success: {}, status: {}, returnValue: {}".format(success, status, returnValue)) finally: print("Finally exiting from FileWithLocalFilename")
def update_uuid(self): self.mutex.lock() # https://docs.python.org/2/library/sqlite3.html try: cur = MainCon.cur cur.execute(''' SELECT uuid FROM `UUID` ; ''') uuid_in_db = cur.fetchall() self.mutex.unlock() uuids = [x[0] for x in uuid_in_db] logger.debug('SystemDevices.refresh_state') SystemDevices.refresh_state() logger.debug('SystemDevices.refresh_state END') deviceDict = SystemDevices.deviceDict uuid_list = [] for dev_id, dev in deviceDict.items(): uuid = dev['uuid'] fstype = dev['fstype'] label = dev['label'] major_dnum, minor_dnum = dev_id uuid_list.append(uuid) if not uuid in uuids: cur.execute('''INSERT INTO UUID (included, uuid, alias, fstype,name,label,major_dnum,minor_dnum, path) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)''', (False, dev['uuid'], dev['mountpoint'], dev['fstype'], dev['name'], dev['label'], major_dnum, minor_dnum, dev['mountpoint'])) else: cur.execute('''UPDATE UUID SET fstype=?,name=?,label=?,major_dnum=?,minor_dnum=?,path=? WHERE uuid=?''', (dev['fstype'], dev['name'], dev['label'], major_dnum, minor_dnum, dev['mountpoint'], dev['uuid']) ) MainCon.con.commit() except Exception as e: self.show_statusbar_warning_msg_SIGNAL.emit(str(e)) logger.error(str(e)) self.mutex.unlock() logger.debug('init_table') for uuid in uuid_list: self.init_table(uuid, clear_table=False) logger.debug('init_table END') try: MainCon.con.commit() except Exception as e: logger.error(str(e)) # self.con.commit() # commit
def test_log_follow(): package_install('chronos', deploy=True) args = ['dcos', 'service', 'log', 'chronos', '--follow'] if sys.platform == 'win32': proc = subprocess.Popen( args, creationflags=subprocess.CREATE_NEW_PROCESS_GROUP, stdout=subprocess.PIPE, stderr=subprocess.PIPE) else: # disable stdout/stderr buffering: # https://docs.python.org/3/using/cmdline.html#cmdoption-u my_env = os.environ.copy() my_env['PYTHONUNBUFFERED'] = 'x' # os.setsid is only available for Unix: # https://docs.python.org/2/library/os.html#os.setsid proc = subprocess.Popen( args, preexec_fn=os.setsid, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=my_env) time.sleep(10) proc.poll() assert proc.returncode is None if sys.platform == 'win32': os.kill(proc.pid, signal.CTRL_BREAK_EVENT) else: # using Unix-only commands os.killpg + os.getgid # https://docs.python.org/2/library/os.html#os.killpg # https://docs.python.org/2/library/os.html#os.getpgid os.killpg(os.getpgid(proc.pid), 15) stdout = proc.stdout.read() stderr = proc.stderr.read() print('STDOUT: {}'.format(stdout)) print('STDERR: {}'.format(stderr)) assert len(stdout.decode('utf-8').split('\n')) > 3 assert_lines(['dcos', 'service', 'log', 'chronos', '--lines=4'], 4) exec_command(['dcos', 'package', 'uninstall', 'chronos', '--yes'])
def chmodR(self, perm, target, writemode): ''' Recursively apply chmod to a directory @author: Eric Ball @param perm: Permissions to be applied. For information on available permissions/modes, see os.chmod documentation at https://docs.python.org/2/library/os.html#os.chmod @param target: Target directory @param writemode: [a]ppend or [o]verwrite ''' try: if not os.path.isdir(target): raise TypeError(target) else: try: if writemode[0] == "a": for root, dirs, files in os.walk(target): # Change permissions for root directory currentPerm = os.stat(root)[0] newPerm = currentPerm | perm os.chmod(root, newPerm) # Change permissions for child directories for mydir in dirs: currentPerm = os.stat(os.path.join(root, mydir))[0] newPerm = currentPerm | perm os.chmod(os.path.join(root, mydir), newPerm) # Change permissions for all files for myfile in files: currentPerm = os.stat(os.path.join(root, myfile))[0] newPerm = currentPerm | perm os.chmod(os.path.join(root, myfile), newPerm) elif writemode[0] == "o": for root, dirs, files in os.walk(target): # Change permissions for root directory os.chmod(root, perm) # Change permissions for child directories for mydir in dirs: os.chmod(os.path.join(root, mydir), perm) # Change permissions for all files for myfile in files: os.chmod(os.path.join(root, myfile), perm) else: raise NameError(writemode) except NameError: raise except TypeError: print "Error: Cannot chmodR target, must be a directory" raise except NameError: print "Error: Invalid writemode specified. Please use [a]ppend " + \ "or [o]verwrite" raise except Exception: raise
