[120] | 1 | #!/usr/bin/env python |
---|
| 2 | |
---|
| 3 | """ |
---|
| 4 | hdfs.py is a python client for the thrift interface to HDFS. |
---|
| 5 | |
---|
| 6 | Licensed under the Apache License, Version 2.0 (the "License"); |
---|
| 7 | you may not use this file except in compliance with the License. |
---|
| 8 | You may obtain a copy of the License at |
---|
| 9 | |
---|
| 10 | http://www.apache.org/licenses/LICENSE-2.0 |
---|
| 11 | |
---|
| 12 | Unless required by applicable law or agreed to in writing, software |
---|
| 13 | distributed under the License is distributed on an "AS IS" BASIS, |
---|
| 14 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
---|
| 15 | implied. See the License for the specific language governing permissions |
---|
| 16 | and limitations under the License. |
---|
| 17 | |
---|
| 18 | """ |
---|
| 19 | import sys |
---|
| 20 | sys.path.append('../gen-py') |
---|
| 21 | |
---|
| 22 | from optparse import OptionParser |
---|
| 23 | from thrift import Thrift |
---|
| 24 | from thrift.transport import TSocket |
---|
| 25 | from thrift.transport import TTransport |
---|
| 26 | from thrift.protocol import TBinaryProtocol |
---|
| 27 | from hadoopfs import ThriftHadoopFileSystem |
---|
| 28 | from hadoopfs.ttypes import * |
---|
| 29 | from readline import * |
---|
| 30 | from cmd import * |
---|
| 31 | import os |
---|
| 32 | import re |
---|
| 33 | import readline |
---|
| 34 | import subprocess |
---|
| 35 | |
---|
| 36 | # |
---|
| 37 | # The address of the FileSystemClientProxy. If the host and port are |
---|
| 38 | # not specified, then a proxy server is automatically spawned. |
---|
| 39 | # |
---|
| 40 | host = 'localhost' |
---|
| 41 | port = 4677 # use any port |
---|
| 42 | proxyStartScript = './start_thrift_server.sh' |
---|
| 43 | startServer = True # shall we start a proxy server? |
---|
| 44 | |
---|
| 45 | # |
---|
| 46 | # The hdfs interactive shell. The Cmd class is a builtin that uses readline + implements |
---|
| 47 | # a whole bunch of utility stuff like help and custom tab completions. |
---|
| 48 | # It makes everything real easy. |
---|
| 49 | # |
---|
| 50 | class hadoopthrift_cli(Cmd): |
---|
| 51 | |
---|
| 52 | # my custom prompt looks better than the default |
---|
| 53 | prompt = 'hdfs>> ' |
---|
| 54 | |
---|
| 55 | ############################# |
---|
| 56 | # Class constructor |
---|
| 57 | ############################# |
---|
| 58 | def __init__(self, server_name, server_port): |
---|
| 59 | Cmd.__init__(self) |
---|
| 60 | self.server_name = server_name |
---|
| 61 | self.server_port = server_port |
---|
| 62 | |
---|
| 63 | ############################# |
---|
| 64 | # Start the ClientProxy Server if we can find it. |
---|
| 65 | # Read in its stdout to determine what port it is running on |
---|
| 66 | ############################# |
---|
| 67 | def startProxyServer(self): |
---|
| 68 | try: |
---|
| 69 | p = subprocess.Popen(proxyStartScript, self.server_port, stdout=subprocess.PIPE) |
---|
| 70 | content = p.stdout.readline() |
---|
| 71 | p.stdout.close() |
---|
| 72 | val = re.split( '\[|\]', content) |
---|
| 73 | print val[1] |
---|
| 74 | self.server_port = val[1] |
---|
| 75 | return True |
---|
| 76 | |
---|
| 77 | except Exception, ex: |
---|
| 78 | print "ERROR in starting proxy server " + proxyStartScript |
---|
| 79 | print '%s' % (ex.message) |
---|
| 80 | return False |
---|
| 81 | |
---|
| 82 | ############################# |
---|
| 83 | # Connect to clientproxy |
---|
| 84 | ############################# |
---|
| 85 | def connect(self): |
---|
| 86 | try: |
---|
| 87 | # connect to hdfs thrift server |
---|
| 88 | self.transport = TSocket.TSocket(self.server_name, self.server_port) |
---|
| 89 | self.transport = TTransport.TBufferedTransport(self.transport) |
---|
| 90 | self.protocol = TBinaryProtocol.TBinaryProtocol(self.transport) |
---|
| 91 | |
---|
| 92 | # Create a client to use the protocol encoder |
---|
| 93 | self.client = ThriftHadoopFileSystem.Client(self.protocol) |
---|
| 94 | self.transport.open() |
---|
| 95 | |
---|
| 96 | # tell the HadoopThrift server to die after 60 minutes of inactivity |
---|
| 97 | self.client.setInactivityTimeoutPeriod(60*60) |
---|
| 98 | return True |
---|
| 99 | |
---|
| 100 | except Thrift.TException, tx: |
---|
| 101 | print "ERROR in connecting to ", self.server_name, ":", self.server_port |
---|
| 102 | print '%s' % (tx.message) |
---|
| 103 | return False |
---|
| 104 | |
---|
| 105 | |
---|
| 106 | # |
---|
| 107 | # Disconnect from client proxy |
---|
| 108 | # |
---|
| 109 | def shutdown(self): |
---|
| 110 | try : |
---|
| 111 | self.transport.close() |
---|
| 112 | except Exception, tx: |
---|
| 113 | return False |
---|
| 114 | |
---|
| 115 | ############################# |
---|
| 116 | # Create the specified file. Returns a handle to write data. |
---|
| 117 | ############################# |
---|
| 118 | def do_create(self, name): |
---|
| 119 | if name == "": |
---|
| 120 | print " ERROR usage: create <pathname>" |
---|
| 121 | print |
---|
| 122 | return 0 |
---|
| 123 | |
---|
| 124 | # Create the file, and immediately closes the handle |
---|
| 125 | path = Pathname(); |
---|
| 126 | path.pathname = name; |
---|
| 127 | status = self.client.create(path) |
---|
| 128 | self.client.close(status) |
---|
| 129 | return 0 |
---|
| 130 | |
---|
| 131 | ############################# |
---|
| 132 | # Delete the specified file. |
---|
| 133 | ############################# |
---|
| 134 | def do_rm(self, name): |
---|
| 135 | if name == "": |
---|
| 136 | print " ERROR usage: rm <pathname>\n" |
---|
| 137 | return 0 |
---|
| 138 | |
---|
| 139 | # delete file |
---|
| 140 | path = Pathname(); |
---|
| 141 | path.pathname = name; |
---|
| 142 | status = self.client.rm(path, False) |
---|
| 143 | if status == False: |
---|
| 144 | print " ERROR in deleting path: " + name |
---|
| 145 | return 0 |
---|
| 146 | |
---|
| 147 | ############################# |
---|
| 148 | # Rename the specified file/dir |
---|
| 149 | ############################# |
---|
| 150 | def do_mv(self, line): |
---|
| 151 | params = line.split() |
---|
| 152 | if (len(params) != 2): |
---|
| 153 | print " ERROR usage: mv <srcpathname> <destpathname>\n" |
---|
| 154 | return 0 |
---|
| 155 | src = params[0].strip() |
---|
| 156 | dest = params[1].strip() |
---|
| 157 | |
---|
| 158 | if src == "": |
---|
| 159 | print " ERROR usage: mv <srcpathname> <destpathname>\n" |
---|
| 160 | return 0 |
---|
| 161 | if dest == "": |
---|
| 162 | print " ERROR usage: mv <srcpathname> <destpathname>\n" |
---|
| 163 | return 0 |
---|
| 164 | |
---|
| 165 | # move file |
---|
| 166 | path = Pathname(); |
---|
| 167 | path.pathname = src; |
---|
| 168 | destpath = Pathname(); |
---|
| 169 | destpath.pathname = dest; |
---|
| 170 | status = self.client.rename(path, destpath) |
---|
| 171 | if status == False: |
---|
| 172 | print " ERROR in renaming path: " + name |
---|
| 173 | return 0 |
---|
| 174 | |
---|
| 175 | ############################# |
---|
| 176 | # Delete the specified file. |
---|
| 177 | ############################# |
---|
| 178 | def do_mkdirs(self, name): |
---|
| 179 | if name == "": |
---|
| 180 | print " ERROR usage: mkdirs <pathname>\n" |
---|
| 181 | return 0 |
---|
| 182 | |
---|
| 183 | # create directory |
---|
| 184 | path = Pathname(); |
---|
| 185 | path.pathname = name; |
---|
| 186 | fields = self.client.mkdirs(path) |
---|
| 187 | return 0 |
---|
| 188 | |
---|
| 189 | ############################# |
---|
| 190 | # does the pathname exist? |
---|
| 191 | ############################# |
---|
| 192 | def do_exists(self, name): |
---|
| 193 | if name == "": |
---|
| 194 | print " ERROR usage: exists <pathname>\n" |
---|
| 195 | return 0 |
---|
| 196 | |
---|
| 197 | # check existence of pathname |
---|
| 198 | path = Pathname(); |
---|
| 199 | path.pathname = name; |
---|
| 200 | fields = self.client.exists(path) |
---|
| 201 | if (fields == True): |
---|
| 202 | print name + " exists." |
---|
| 203 | else: |
---|
| 204 | print name + " does not exist." |
---|
| 205 | return 0 |
---|
| 206 | |
---|
| 207 | ############################# |
---|
| 208 | # copy local file into hdfs |
---|
| 209 | ############################# |
---|
| 210 | def do_put(self, line): |
---|
| 211 | params = line.split() |
---|
| 212 | if (len(params) != 2): |
---|
| 213 | print " ERROR usage: put <localpathname> <hdfspathname>\n" |
---|
| 214 | return 0 |
---|
| 215 | local = params[0].strip() |
---|
| 216 | hdfs = params[1].strip() |
---|
| 217 | |
---|
| 218 | if local == "": |
---|
| 219 | print " ERROR usage: put <localpathname> <hdfspathname>\n" |
---|
| 220 | return 0 |
---|
| 221 | if hdfs == "": |
---|
| 222 | print " ERROR usage: put <localpathname> <hdfspathname>\n" |
---|
| 223 | return 0 |
---|
| 224 | |
---|
| 225 | # open local file |
---|
| 226 | input = open(local, 'rb') |
---|
| 227 | |
---|
| 228 | # open output file |
---|
| 229 | path = Pathname(); |
---|
| 230 | path.pathname = hdfs; |
---|
| 231 | output = self.client.create(path) |
---|
| 232 | |
---|
| 233 | # read 1MB at a time and upload to hdfs |
---|
| 234 | while True: |
---|
| 235 | chunk = input.read(1024*1024) |
---|
| 236 | if not chunk: break |
---|
| 237 | self.client.write(output, chunk) |
---|
| 238 | |
---|
| 239 | self.client.close(output) |
---|
| 240 | input.close() |
---|
| 241 | |
---|
| 242 | ############################# |
---|
| 243 | # copy hdfs file into local |
---|
| 244 | ############################# |
---|
| 245 | def do_get(self, line): |
---|
| 246 | params = line.split() |
---|
| 247 | if (len(params) != 2): |
---|
| 248 | print " ERROR usage: get <hdfspathname> <localpathname>\n" |
---|
| 249 | return 0 |
---|
| 250 | hdfs = params[0].strip() |
---|
| 251 | local = params[1].strip() |
---|
| 252 | |
---|
| 253 | if local == "": |
---|
| 254 | print " ERROR usage: get <hdfspathname> <localpathname>\n" |
---|
| 255 | return 0 |
---|
| 256 | if hdfs == "": |
---|
| 257 | print " ERROR usage: get <hdfspathname> <localpathname>\n" |
---|
| 258 | return 0 |
---|
| 259 | |
---|
| 260 | # open output local file |
---|
| 261 | output = open(local, 'wb') |
---|
| 262 | |
---|
| 263 | # open input hdfs file |
---|
| 264 | path = Pathname(); |
---|
| 265 | path.pathname = hdfs; |
---|
| 266 | input = self.client.open(path) |
---|
| 267 | |
---|
| 268 | # find size of hdfs file |
---|
| 269 | filesize = self.client.stat(path).length |
---|
| 270 | |
---|
| 271 | # read 1MB bytes at a time from hdfs |
---|
| 272 | offset = 0 |
---|
| 273 | chunksize = 1024 * 1024 |
---|
| 274 | while True: |
---|
| 275 | chunk = self.client.read(input, offset, chunksize) |
---|
| 276 | if not chunk: break |
---|
| 277 | output.write(chunk) |
---|
| 278 | offset += chunksize |
---|
| 279 | if (offset >= filesize): break |
---|
| 280 | |
---|
| 281 | self.client.close(input) |
---|
| 282 | output.close() |
---|
| 283 | |
---|
| 284 | ############################# |
---|
| 285 | # List attributes of this path |
---|
| 286 | ############################# |
---|
| 287 | def do_ls(self, name): |
---|
| 288 | if name == "": |
---|
| 289 | print " ERROR usage: list <pathname>\n" |
---|
| 290 | return 0 |
---|
| 291 | |
---|
| 292 | # list file status |
---|
| 293 | path = Pathname(); |
---|
| 294 | path.pathname = name; |
---|
| 295 | status = self.client.stat(path) |
---|
| 296 | if (status.isdir == False): |
---|
| 297 | self.printStatus(status) |
---|
| 298 | return 0 |
---|
| 299 | |
---|
| 300 | # This is a directory, fetch its contents |
---|
| 301 | liststatus = self.client.listStatus(path) |
---|
| 302 | for item in liststatus: |
---|
| 303 | self.printStatus(item) |
---|
| 304 | |
---|
| 305 | ############################# |
---|
| 306 | # Set permissions for a file |
---|
| 307 | ############################# |
---|
| 308 | def do_chmod(self, line): |
---|
| 309 | params = line.split() |
---|
| 310 | if (len(params) != 2): |
---|
| 311 | print " ERROR usage: chmod 774 <pathname>\n" |
---|
| 312 | return 0 |
---|
| 313 | perm = params[0].strip() |
---|
| 314 | name = params[1].strip() |
---|
| 315 | |
---|
| 316 | if name == "": |
---|
| 317 | print " ERROR usage: chmod 774 <pathname>\n" |
---|
| 318 | return 0 |
---|
| 319 | if perm == "": |
---|
| 320 | print " ERROR usage: chmod 774 <pathname>\n" |
---|
| 321 | return 0 |
---|
| 322 | |
---|
| 323 | # set permissions (in octal) |
---|
| 324 | path = Pathname(); |
---|
| 325 | path.pathname = name; |
---|
| 326 | status = self.client.chmod(path, int(perm,8)) |
---|
| 327 | return 0 |
---|
| 328 | |
---|
| 329 | ############################# |
---|
| 330 | # Set owner for a file. This is not an atomic operation. |
---|
| 331 | # A change to the group of a file may be overwritten by this one. |
---|
| 332 | ############################# |
---|
| 333 | def do_chown(self, line): |
---|
| 334 | params = line.split() |
---|
| 335 | if (len(params) != 2): |
---|
| 336 | print " ERROR usage: chown <ownername> <pathname>\n" |
---|
| 337 | return 0 |
---|
| 338 | owner = params[0].strip() |
---|
| 339 | name = params[1].strip() |
---|
| 340 | if name == "": |
---|
| 341 | print " ERROR usage: chown <ownername> <pathname>\n" |
---|
| 342 | return 0 |
---|
| 343 | |
---|
| 344 | # get the current owner and group |
---|
| 345 | path = Pathname(); |
---|
| 346 | path.pathname = name; |
---|
| 347 | cur = self.client.stat(path) |
---|
| 348 | |
---|
| 349 | # set new owner, keep old group |
---|
| 350 | status = self.client.chown(path, owner, cur.group) |
---|
| 351 | return 0 |
---|
| 352 | |
---|
| 353 | ####################################### |
---|
| 354 | # Set the replication factor for a file |
---|
| 355 | ###################################### |
---|
| 356 | def do_setreplication(self, line): |
---|
| 357 | params = line.split() |
---|
| 358 | if (len(params) != 2): |
---|
| 359 | print " ERROR usage: setreplication <replication factor> <pathname>\n" |
---|
| 360 | return 0 |
---|
| 361 | repl = params[0].strip() |
---|
| 362 | name = params[1].strip() |
---|
| 363 | if name == "": |
---|
| 364 | print " ERROR usage: setreplication <replication factor> <pathname>\n" |
---|
| 365 | return 0 |
---|
| 366 | if repl == "": |
---|
| 367 | print " ERROR usage: setreplication <replication factor> <pathname>\n" |
---|
| 368 | return 0 |
---|
| 369 | |
---|
| 370 | path = Pathname(); |
---|
| 371 | path.pathname = name; |
---|
| 372 | status = self.client.setReplication(path, int(repl)) |
---|
| 373 | return 0 |
---|
| 374 | |
---|
| 375 | ############################# |
---|
| 376 | # Display the locations of the blocks of this file |
---|
| 377 | ############################# |
---|
| 378 | def do_getlocations(self, name): |
---|
| 379 | if name == "": |
---|
| 380 | print " ERROR usage: getlocations <pathname>\n" |
---|
| 381 | return 0 |
---|
| 382 | path = Pathname(); |
---|
| 383 | path.pathname = name; |
---|
| 384 | |
---|
| 385 | # find size of hdfs file |
---|
| 386 | filesize = self.client.stat(path).length |
---|
| 387 | |
---|
| 388 | # getlocations file |
---|
| 389 | blockLocations = self.client.getFileBlockLocations(path, 0, filesize) |
---|
| 390 | for item in blockLocations: |
---|
| 391 | self.printLocations(item) |
---|
| 392 | |
---|
| 393 | return 0 |
---|
| 394 | |
---|
| 395 | ############################# |
---|
| 396 | # Utility methods from here |
---|
| 397 | ############################# |
---|
| 398 | # |
---|
| 399 | # If I don't do this, the last command is always re-executed which is annoying. |
---|
| 400 | # |
---|
| 401 | def emptyline(self): |
---|
| 402 | pass |
---|
| 403 | |
---|
| 404 | # |
---|
| 405 | # print the status of a path |
---|
| 406 | # |
---|
| 407 | def printStatus(self, stat): |
---|
| 408 | print str(stat.block_replication) + "\t" + str(stat.length) + "\t" + str(stat.modification_time) + "\t" + stat.permission + "\t" + stat.owner + "\t" + stat.group + "\t" + stat.path |
---|
| 409 | |
---|
| 410 | # |
---|
| 411 | # print the locations of a block |
---|
| 412 | # |
---|
| 413 | def printLocations(self, location): |
---|
| 414 | print str(location.names) + "\t" + str(location.offset) + "\t" + str(location.length) |
---|
| 415 | |
---|
| 416 | # |
---|
| 417 | # Various ways to exit the hdfs shell |
---|
| 418 | # |
---|
| 419 | def do_quit(self,ignored): |
---|
| 420 | try: |
---|
| 421 | if startServer: |
---|
| 422 | self.client.shutdown(1) |
---|
| 423 | return -1 |
---|
| 424 | except Exception, ex: |
---|
| 425 | return -1 |
---|
| 426 | |
---|
| 427 | def do_q(self,ignored): |
---|
| 428 | return self.do_quit(ignored) |
---|
| 429 | |
---|
| 430 | # ctl-d |
---|
| 431 | def do_EOF(self,ignored): |
---|
| 432 | return self.do_quit(ignored) |
---|
| 433 | |
---|
| 434 | # |
---|
| 435 | # Give the user some amount of help - I am a nice guy |
---|
| 436 | # |
---|
| 437 | |
---|
| 438 | def help_create(self): |
---|
| 439 | print "create <pathname>" |
---|
| 440 | |
---|
| 441 | def help_rm(self): |
---|
| 442 | print "rm <pathname>" |
---|
| 443 | |
---|
| 444 | def help_mv(self): |
---|
| 445 | print "mv <srcpathname> <destpathname>" |
---|
| 446 | |
---|
| 447 | def help_mkdirs(self): |
---|
| 448 | print "mkdirs <pathname>" |
---|
| 449 | |
---|
| 450 | def help_exists(self): |
---|
| 451 | print "exists <pathname>" |
---|
| 452 | |
---|
| 453 | def help_put(self): |
---|
| 454 | print "put <localpathname> <hdfspathname>" |
---|
| 455 | |
---|
| 456 | def help_get(self): |
---|
| 457 | print "get <hdfspathname> <localpathname>" |
---|
| 458 | |
---|
| 459 | def help_ls(self): |
---|
| 460 | print "ls <hdfspathname>" |
---|
| 461 | |
---|
| 462 | def help_chmod(self): |
---|
| 463 | print "chmod 775 <hdfspathname>" |
---|
| 464 | |
---|
| 465 | def help_chown(self): |
---|
| 466 | print "chown <ownername> <hdfspathname>" |
---|
| 467 | |
---|
| 468 | def help_setreplication(self): |
---|
| 469 | print "setrep <replication factor> <hdfspathname>" |
---|
| 470 | |
---|
| 471 | def help_getlocations(self): |
---|
| 472 | print "getlocations <pathname>" |
---|
| 473 | |
---|
| 474 | def help_EOF(self): |
---|
| 475 | print '<ctl-d> will quit this program.' |
---|
| 476 | |
---|
| 477 | def help_quit(self): |
---|
| 478 | print 'if you need to know what quit does, you shouldn\'t be using a computer.' |
---|
| 479 | |
---|
| 480 | def help_q(self): |
---|
| 481 | print 'quit and if you need to know what quit does, you shouldn\'t be using a computer.' |
---|
| 482 | |
---|
| 483 | def help_help(self): |
---|
| 484 | print 'duh' |
---|
| 485 | |
---|
| 486 | def usage(exec_name): |
---|
| 487 | print "Usage: " |
---|
| 488 | print " %s [proxyclientname [proxyclientport]]" % exec_name |
---|
| 489 | print " %s -v" % exec_name |
---|
| 490 | print " %s --help" % exec_name |
---|
| 491 | print " %s -h" % exec_name |
---|
| 492 | |
---|
| 493 | if __name__ == "__main__": |
---|
| 494 | |
---|
| 495 | # |
---|
| 496 | # Rudimentary command line processing. |
---|
| 497 | # |
---|
| 498 | |
---|
| 499 | # real parsing: |
---|
| 500 | parser = OptionParser() |
---|
| 501 | parser.add_option("-e", "--execute", dest="command_str", |
---|
| 502 | help="execute this command and exit") |
---|
| 503 | parser.add_option("-s","--proxyclient",dest="host",help="the proxyclient's hostname") |
---|
| 504 | parser.add_option("-p","--port",dest="port",help="the proxyclient's port number") |
---|
| 505 | |
---|
| 506 | (options, args) = parser.parse_args() |
---|
| 507 | |
---|
| 508 | # |
---|
| 509 | # Save host and port information of the proxy server |
---|
| 510 | # |
---|
| 511 | if (options.host): |
---|
| 512 | host = options.host |
---|
| 513 | startServer = False |
---|
| 514 | if (options.port): |
---|
| 515 | port = options.port |
---|
| 516 | startServer = False |
---|
| 517 | |
---|
| 518 | # |
---|
| 519 | # Retrieve the user's readline history. |
---|
| 520 | # |
---|
| 521 | historyFileName = os.path.expanduser("~/.hdfs_history") |
---|
| 522 | if (os.path.exists(historyFileName)): |
---|
| 523 | readline.read_history_file(historyFileName) |
---|
| 524 | |
---|
| 525 | # |
---|
| 526 | # Create class and connect to proxy server |
---|
| 527 | # |
---|
| 528 | c = hadoopthrift_cli(host,port) |
---|
| 529 | |
---|
| 530 | if startServer: |
---|
| 531 | if c.startProxyServer() == False: |
---|
| 532 | sys.exit(1) |
---|
| 533 | if c.connect() == False: |
---|
| 534 | sys.exit(1) |
---|
| 535 | |
---|
| 536 | |
---|
| 537 | # |
---|
| 538 | # If this utility was invoked with one argument, process it |
---|
| 539 | # |
---|
| 540 | if (options.command_str): |
---|
| 541 | c.onecmd(options.command_str) |
---|
| 542 | sys.exit(0) |
---|
| 543 | |
---|
| 544 | # |
---|
| 545 | # Start looping over user commands. |
---|
| 546 | # |
---|
| 547 | c.cmdloop('Welcome to the Thrift interactive shell for Hadoop File System. - how can I help you? ' + '\n' |
---|
| 548 | 'Press tab twice to see the list of commands. ' + '\n' + |
---|
| 549 | 'To complete the name of a command press tab once. \n' |
---|
| 550 | ) |
---|
| 551 | c.shutdown(); |
---|
| 552 | |
---|
| 553 | readline.write_history_file(historyFileName) |
---|
| 554 | print '' # I am nothing if not courteous. |
---|
| 555 | sys.exit(0) |
---|