Hide keyboard shortcuts

Hot-keys on this page

r m x p   toggle line displays

j k   next/prev highlighted chunk

0   (zero) top of page

1   (one) first highlighted chunk

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

495

496

497

498

499

500

501

502

503

504

505

506

507

508

509

510

511

512

513

514

515

516

517

518

519

520

521

522

523

524

525

526

527

528

529

530

531

532

533

534

535

536

537

538

539

540

541

542

543

544

545

546

547

548

549

550

551

552

553

554

555

556

557

558

559

560

561

562

563

564

565

566

567

568

569

570

571

572

573

574

575

576

577

578

579

580

581

582

583

584

585

586

587

588

589

590

591

592

593

594

595

596

597

598

599

600

601

602

603

604

605

606

607

608

609

610

611

612

613

614

615

616

617

618

619

620

621

622

623

624

625

626

627

628

629

630

631

632

633

634

635

636

637

638

639

640

641

642

643

644

645

646

647

648

649

650

651

652

653

654

655

656

657

658

659

660

661

662

663

664

665

666

667

668

669

670

 

# -*- coding: utf-8 -*- 

 

u'''Some, basic definitions, functions and dependencies. 

 

Use env variable C{PYGEODESY_XPACKAGES} to avoid import of dependencies 

C{geographiclib}, C{numpy} and/or C{scipy}. Set C{PYGEODESY_XPACKAGES} 

to a comma-separated list of package names to be excluded from import. 

''' 

# make sure int/int division yields float quotient 

from __future__ import division 

division = 1 / 2 # .albers, .azimuthal, .constants, etc., .utily 

if not division: 

raise ImportError('%s 1/2 == %s' % ('division', division)) 

del division 

 

from pygeodesy.errors import _AssertionError, _AttributeError, _ImportError, \ 

_TypeError, _TypesError, _ValueError, _xkwds_get 

from pygeodesy.interns import MISSING, NN, _by_, _DOT_, _ELLIPSIS4_, _enquote, \ 

_EQUAL_, _in_, _invalid_, _N_A_, _name_, _SPACE_, \ 

_splituple, _UNDER_, _version_ 

from pygeodesy.lazily import _ALL_LAZY, _ALL_MODS as _MODS, _FOR_DOCS, \ 

_getenv, _sys_version_info2 

 

from copy import copy as _copy, deepcopy as _deepcopy 

from math import copysign as _copysign 

 

__all__ = _ALL_LAZY.basics 

__version__ = '22.09.16' 

 

_0_0 = 0.0 # see .constants 

_below_ = 'below' 

_cannot_ = 'cannot' 

_odd_ = 'odd' 

_required_ = 'required' 

_PYGEODESY_XPACKAGES_ = 'PYGEODESY_XPACKAGES' 

_XPACKAGES = _splituple(_getenv(_PYGEODESY_XPACKAGES_, NN)) 

 

try: # Luciano Ramalho, "Fluent Python", page 395, O'Reilly, 2016 

from numbers import Integral as _Ints, Real as _Scalars 

except ImportError: 

try: 

_Ints = int, long # int objects (C{tuple}) 

except NameError: # Python 3+ 

_Ints = int, # int objects (C{tuple}) 

_Scalars = _Ints + (float,) 

 

try: 

try: # use C{from collections.abc import ...} in Python 3.9+ 

from collections.abc import Sequence as _Sequence # in .points 

except ImportError: # no .abc in Python 3.8- and 2.7- 

from collections import Sequence as _Sequence # in .points 

if isinstance([], _Sequence) and isinstance((), _Sequence): 

# and isinstance(range(1), _Sequence): 

_Seqs = _Sequence 

else: 

raise ImportError # _AssertionError 

except ImportError: 

_Sequence = tuple # immutable for .points._Basequence 

_Seqs = list, _Sequence # , range for function len2 below 

 

try: 

_Bytes = unicode, bytearray # PYCHOK expected 

_Strs = basestring, str # XXX , bytes 

 

def _NOP(x): 

'''NOP, pass thru.''' 

return x 

 

str2ub = ub2str = _NOP # avoids UnicodeDecodeError 

 

def _Xstr(exc): # PYCHOK no cover 

'''I{Invoke only with caught ImportError} B{C{exc}}. 

 

C{... "cannot import name _distributor_init" ...} 

 

only for C{numpy}, C{scipy} import errors occurring 

on arm64 Apple Silicon running macOS' Python 2.7.16? 

''' 

t = str(exc) 

if '_distributor_init' in t: 

from sys import exc_info 

from traceback import extract_tb 

tb = exc_info()[2] # 3-tuple (type, value, traceback) 

t4 = extract_tb(tb, 1)[0] # 4-tuple (file, line, name, 'import ...') 

t = _SPACE_(_cannot_, t4[3] or _N_A_) 

del tb, t4 

return t 

 

except NameError: # Python 3+ 

from pygeodesy.interns import _utf_8_ 

 

_Bytes = bytes, bytearray 

_Strs = str, # tuple 

_Xstr = str 

 

def str2ub(sb): 

'''Convert C{str} to C{unicode bytes}. 

''' 

if isinstance(sb, _Strs): 

sb = sb.encode(_utf_8_) 

return sb 

 

def ub2str(ub): 

'''Convert C{unicode bytes} to C{str}. 

''' 

if isinstance(ub, _Bytes): 

ub = str(ub.decode(_utf_8_)) 

return ub 

 

 

def clips(sb, limit=50, white=NN): 

'''Clip a string to the given length limit. 

 

@arg sb: String (C{str} or C{bytes}). 

@kwarg limit: Length limit (C{int}). 

@kwarg white: Optionally, replace all whitespace (C{str}). 

 

@return: The clipped or unclipped B{C{sb}}. 

''' 

T = type(sb) 

if len(sb) > limit > 8: 

h = limit // 2 

sb = T(_ELLIPSIS4_).join((sb[:h], sb[-h:])) 

if white: # replace whitespace 

sb = T(white).join(sb.split()) 

return sb 

 

 

def copysign0(x, y): 

'''Like C{math.copysign(x, y)} except C{zero}, I{unsigned}. 

 

@return: C{math.copysign(B{x}, B{y})} if B{C{x}} else 

C{type(B{x})(0)}. 

''' 

return _copysign(x, (y if y else 0)) if x else copytype(0, x) 

 

 

def copytype(x, y): 

'''Return the value of B{x} as C{type} of C{y}. 

 

@return: C{type(B{y})(B{x})}. 

''' 

return type(y)(x if x else _0_0) 

 

 

def halfs2(str2): 

'''Split a string in 2 halfs. 

 

@arg str2: String to split (C{str}). 

 

@return: 2-Tuple (_1st, _2nd) half (C{str}). 

 

@raise ValueError: Zero or odd C{len}(B{C{str2}}). 

''' 

h, r = divmod(len(str2), 2) 

if r or not h: 

raise _ValueError(str2=str2, txt=_odd_) 

return str2[:h], str2[h:] 

 

 

def isbool(obj): 

'''Check whether an object is C{bool}ean. 

 

@arg obj: The object (any C{type}). 

 

@return: C{True} if B{C{obj}} is C{bool}ean, 

C{False} otherwise. 

''' 

return isinstance(obj, bool) # and (obj is False 

# or obj is True) 

 

if isbool(1) or isbool(0): # PYCHOK assert 

raise _AssertionError(isbool=1) 

 

if _FOR_DOCS: # XXX avoid epidoc Python 2.7 error 

from inspect import isclass as _isclass 

 

def isclass(obj): 

'''Return C{True} if B{C{obj}} is a C{class} or C{type}. 

 

@see: Python's C{inspect.isclass}. 

''' 

return _isclass(obj) 

else: 

from inspect import isclass # PYCHOK re-import 

 

 

def iscomplex(obj): 

'''Check whether an object is C{complex}. 

 

@arg obj: The object (any C{type}). 

 

@return: C{True} if B{C{obj}} is C{complex}, 

C{False} otherwise. 

''' 

# hasattr('conjugate'), hasattr('real') and hasattr('imag') 

return isinstance(obj, complex) # numbers.Complex? 

 

 

def isfloat(obj): 

'''Check whether an object is a C{float} or float C{str}. 

 

@arg obj: The object (any C{type}). 

 

@return: C{True} if B{C{obj}} is a C{float}, 

C{False} otherwise. 

''' 

try: 

return isinstance( obj, float) or (isstr(obj) 

and isinstance(float(obj), float)) 

except (TypeError, ValueError): 

return False 

 

 

try: 

isidentifier = str.isidentifier # Python 3, must be str 

except AttributeError: # Python 2- 

 

def isidentifier(obj): 

'''Return C{True} if B{C{obj}} is a valid Python identifier. 

''' 

return bool(obj and obj.replace(_UNDER_, NN).isalnum() 

and not obj[:1].isdigit()) 

 

 

def isint(obj, both=False): 

'''Check for C{int} type or an integer C{float} value. 

 

@arg obj: The object (any C{type}). 

@kwarg both: If C{true}, check C{float} and L{Fsum} 

type and value (C{bool}). 

 

@return: C{True} if B{C{obj}} is C{int} or I{integer} 

C{float} or L{Fsum}, C{False} otherwise. 

 

@note: Both C{isint(True)} and C{isint(False)} return 

C{False} (and no longer C{True}). 

''' 

if isinstance(obj, _Ints) and not isbool(obj): 

return True 

elif both: # and isinstance(obj, (float, Fsum)) ... 

try: # ... NOT , Scalars) to include Fsum! 

return obj.is_integer() 

except AttributeError: 

pass # XXX float(int(obj)) == obj? 

return False 

 

 

try: 

from keyword import iskeyword # Python 2.7+ 

except ImportError: 

 

def iskeyword(unused): 

'''Not Implemented. Return C{False}, always. 

''' 

return False 

 

 

def isodd(x): 

'''Is B{C{x}} odd? 

 

@arg x: Value (C{scalar}). 

 

@return: C{True} if B{C{x}} is odd, 

C{False} otherwise. 

''' 

return bool(int(x) & 1) 

 

 

def isscalar(obj): 

'''Check for scalar types. 

 

@arg obj: The object (any C{type}). 

 

@return: C{True} if B{C{obj}} is C{scalar}, C{False} otherwise. 

''' 

return isinstance(obj, _Scalars) and not isbool(obj) 

 

 

def issequence(obj, *excls): 

'''Check for sequence types. 

 

@arg obj: The object (any C{type}). 

@arg excls: Classes to exclude (C{type}), all positional. 

 

@note: Excluding C{tuple} implies excluding C{namedtuple}. 

 

@return: C{True} if B{C{obj}} is a sequence, C{False} otherwise. 

''' 

return isinstance(obj, _Seqs) and not (excls and isinstance(obj, excls)) 

 

 

def isstr(obj): 

'''Check for string types. 

 

@arg obj: The object (any C{type}). 

 

@return: C{True} if B{C{obj}} is C{str}, C{False} otherwise. 

''' 

return isinstance(obj, _Strs) 

 

 

def issubclassof(Sub, *Supers): 

'''Check whether a class is a sub-class of some other class(es). 

 

@arg Sub: The sub-class (C{class}). 

@arg Supers: One or more C(super) classes (C{class}). 

 

@return: C{True} if B{C{Sub}} is a sub-class of any B{C{Supers}}, 

C{False} if not (C{bool}) or C{None} if B{C{Sub}} is not 

a class or if no B{C{Supers}} are given or none of those 

are a class. 

''' 

if isclass(Sub): 

t = tuple(S for S in Supers if isclass(S)) 

if t: 

return bool(issubclass(Sub, t)) 

return None 

 

 

def istuplist(obj, minum=0): 

'''Check for tuple or list types and minumal length. 

 

@arg obj: The object (any C{type}). 

@kwarg minum: Minimal C{len} required C({int}). 

 

@return: C{True} if B{C{obj}} is C{tuple} or C{list} with 

C{len} at least B{C{minum}}, C{False} otherwise. 

''' 

return type(obj) in (tuple, list) and len(obj) >= (minum or 0) 

 

 

def len2(items): 

'''Make built-in function L{len} work for generators, iterators, 

etc. since those can only be started exactly once. 

 

@arg items: Generator, iterator, list, range, tuple, etc. 

 

@return: 2-Tuple C{(n, items)} of the number of items (C{int}) 

and the items (C{list} or C{tuple}). 

''' 

if not isinstance(items, _Seqs): # NOT hasattr(items, '__len__'): 

items = list(items) 

return len(items), items 

 

 

def map1(fun1, *xs): # XXX map_ 

'''Apply each argument to a single-argument function and 

return a C{tuple} of results. 

 

@arg fun1: 1-Arg function to apply (C{callable}). 

@arg xs: Arguments to apply (C{any positional}). 

 

@return: Function results (C{tuple}). 

''' 

return tuple(map(fun1, xs)) # note xs, not *xs 

 

 

def map2(func, *xs): 

'''Apply arguments to a function and return a C{tuple} of results. 

 

Unlike Python 2's built-in L{map}, Python 3+ L{map} returns a 

L{map} object, an iterator-like object which generates the 

results only once. Converting the L{map} object to a tuple 

maintains the Python 2 behavior. 

 

@arg func: Function to apply (C{callable}). 

@arg xs: Arguments to apply (C{list, tuple, ...}). 

 

@return: Function results (C{tuple}). 

''' 

return tuple(map(func, *xs)) # note *xs, not xs 

 

 

def neg(x): 

'''Negate C{x} unless C{zero} or C{NEG0}. 

 

@return: C{-B{x}} if B{C{x}} else C{0.0}. 

''' 

return -x if x else _0_0 

 

 

def neg_(*xs): 

'''Negate all of C{xs} with L{neg}. 

 

@return: A C{tuple(neg(x) for x in B{xs})}. 

''' 

return tuple(map(neg, xs)) # like map1 

 

 

def signBit(x): 

'''Return C{signbit(B{x})}, like C++. 

 

@return: C{True} if C{B{x} < 0} or C{NEG0} (C{bool}). 

''' 

return x < 0 or _MODS.constants.isneg0(x) 

 

 

def _signOf(x, off): 

'''(INTERNAL) Return the sign of B{C{x}} versus B{C{off}}. 

''' 

return 1 if x > off else (-1 if x < off else 0) 

 

 

def signOf(x): 

'''Return sign of C{x} as C{int}. 

 

@return: -1, 0 or +1 (C{int}). 

''' 

try: 

s = x.signOf() # Fsum instance? 

except AttributeError: 

s = _signOf(x, 0) 

return s 

 

 

def splice(iterable, n=2, **fill): 

'''Split an iterable into C{n} slices. 

 

@arg iterable: Items to be spliced (C{list}, C{tuple}, ...). 

@kwarg n: Number of slices to generate (C{int}). 

@kwarg fill: Optional fill value for missing items. 

 

@return: A generator for each of B{C{n}} slices, 

M{iterable[i::n] for i=0..n}. 

 

@raise TypeError: Invalid B{C{n}}. 

 

@note: Each generated slice is a C{tuple} or a C{list}, 

the latter only if the B{C{iterable}} is a C{list}. 

 

@example: 

 

>>> from pygeodesy import splice 

 

>>> a, b = splice(range(10)) 

>>> a, b 

((0, 2, 4, 6, 8), (1, 3, 5, 7, 9)) 

 

>>> a, b, c = splice(range(10), n=3) 

>>> a, b, c 

((0, 3, 6, 9), (1, 4, 7), (2, 5, 8)) 

 

>>> a, b, c = splice(range(10), n=3, fill=-1) 

>>> a, b, c 

((0, 3, 6, 9), (1, 4, 7, -1), (2, 5, 8, -1)) 

 

>>> tuple(splice(list(range(9)), n=5)) 

([0, 5], [1, 6], [2, 7], [3, 8], [4]) 

 

>>> splice(range(9), n=1) 

<generator object splice at 0x0...> 

''' 

if not isint(n): 

raise _TypeError(n=n) 

 

t = iterable 

if not isinstance(t, (list, tuple)): 

t = tuple(t) # force tuple, also for PyPy3 

 

if n > 1: 

if fill: 

fill = _xkwds_get(fill, fill=MISSING) 

if fill is not MISSING: 

m = len(t) % n 

if m > 0: # fill with same type 

t += type(t)((fill,)) * (n - m) 

for i in range(n): 

# XXX t[i::n] chokes PyChecker 

yield t[slice(i, None, n)] 

else: 

yield t 

 

 

def unsigned0(x): 

'''Return C{0.0} unsigned. 

 

@return: C{B{x}} if B{C{x}} else C{0.0}. 

''' 

return x if x else _0_0 

 

 

def _xcopy(inst, deep=False): 

'''(INTERNAL) Copy an object, shallow or deep. 

 

@arg inst: The object to copy (any C{type}). 

@kwarg deep: If C{True} make a deep, otherwise 

a shallow copy (C{bool}). 

 

@return: The copy of B{C{inst}}. 

''' 

return _deepcopy(inst) if deep else _copy(inst) 

 

 

def _xdup(inst, **items): 

'''(INTERNAL) Duplicate an object, replacing some attributes. 

 

@arg inst: The object to copy (any C{type}). 

@kwarg items: Attributes to be changed (C{any}). 

 

@return: Shallow duplicate of B{C{inst}} with modified 

attributes, if any B{C{items}}. 

 

@raise AttributeError: Some B{C{items}} invalid. 

''' 

d = _xcopy(inst, deep=False) 

for n, v in items.items(): 

if not hasattr(d, n): 

t = _MODS.named.classname(inst) 

t = _SPACE_(_DOT_(t, n), _invalid_) 

raise _AttributeError(txt=t, this=inst, **items) 

setattr(d, n, v) 

return d 

 

 

def _xgeographiclib(where, *required): 

'''(INTERNAL) Import C{geographiclib} and check required version 

''' 

try: 

_xpackage(_xgeographiclib) 

import geographiclib 

except ImportError as x: 

raise _xImportError(x, where) 

return _xversion(geographiclib, where, *required) 

 

 

def _xImportError(x, where, **name): 

'''(INTERNAL) Embellish an C{ImportError}. 

''' 

t = _SPACE_(_required_, _by_, _xwhere(where, **name)) 

return _ImportError(_Xstr(x), txt=t) 

 

 

def _xinstanceof(*Types, **name_value_pairs): 

'''(INTERNAL) Check C{Types} of all C{name=value} pairs. 

 

@arg Types: One or more classes or types (C{class}), 

all positional. 

@kwarg name_value_pairs: One or more C{B{name}=value} pairs 

with the C{value} to be checked. 

 

@raise TypeError: One of the B{C{name_value_pairs}} is not 

an instance of any of the B{C{Types}}. 

''' 

for n, v in name_value_pairs.items(): 

if not isinstance(v, Types): 

raise _TypesError(n, v, *Types) 

 

 

def _xnumpy(where, *required): 

'''(INTERNAL) Import C{numpy} and check required version 

''' 

try: 

_xpackage(_xnumpy) 

import numpy 

except ImportError as x: 

raise _xImportError(x, where) 

return _xversion(numpy, where, *required) 

 

 

def _xpackage(_xpkg): 

'''(INTERNAL) Check dependency to be excluded. 

''' 

n = _xpkg.__name__[2:] 

if n in _XPACKAGES: 

x = _SPACE_(n, _in_, _PYGEODESY_XPACKAGES_) 

e = _enquote(_getenv(_PYGEODESY_XPACKAGES_, NN)) 

raise ImportError(_EQUAL_(x, e)) 

 

 

def _xor(x, *xs): 

'''(INTERNAL) Exclusive-or C{x} and C{xs}. 

''' 

for x_ in xs: 

x ^= x_ 

return x 

 

 

def _xscipy(where, *required): 

'''(INTERNAL) Import C{scipy} and check required version 

''' 

try: 

_xpackage(_xscipy) 

import scipy 

except ImportError as x: 

raise _xImportError(x, where) 

return _xversion(scipy, where, *required) 

 

 

def _xsubclassof(*Classes, **name_value_pairs): 

'''(INTERNAL) Check (super) class of all C{name=value} pairs. 

 

@arg Classes: One or more classes or types (C{class}), 

all positional. 

@kwarg name_value_pairs: One or more C{B{name}=value} pairs 

with the C{value} to be checked. 

 

@raise TypeError: One of the B{C{name_value_pairs}} is not 

a (sub-)class of any of the B{C{Classes}}. 

''' 

for n, v in name_value_pairs.items(): 

if not issubclassof(v, *Classes): 

raise _TypesError(n, v, *Classes) 

 

 

def _xversion(package, where, *required, **name): # in .karney 

'''(INTERNAL) Check the C{package} version vs B{C{required}}. 

''' 

n = len(required) 

if n: 

t = _xversion_info(package) 

if t[:n] < required: 

t = _SPACE_(package.__name__, _version_, _DOT_(*t), 

_below_, _DOT_(*required), 

_required_, _by_, _xwhere(where, **name)) 

raise ImportError(t) 

return package 

 

 

def _xversion_info(package): # in .karney 

'''(INTERNAL) Get the C{package.__version_info__} as a 2- or 

3-tuple C{(major, minor, revision)} if C{int}s. 

''' 

try: 

t = package.__version_info__ 

except AttributeError: 

t = package.__version__.strip() 

t = t.replace(_DOT_, _SPACE_).split()[:3] 

return map2(int, t) 

 

 

def _xwhere(where, **name): 

'''(INTERNAL) Get the fully qualified name. 

''' 

m = _MODS.named.modulename(where, prefixed=True) 

n = name.get(_name_, NN) 

if n: 

m = _DOT_(m, n) 

return m 

 

 

if _sys_version_info2 < (3, 10): 

_zip = zip # PYCHOK exported 

else: # Python 3.10+ 

 

def _zip(*args): 

return zip(*args, strict=True) 

 

# **) MIT License 

# 

# Copyright (C) 2016-2022 -- mrJean1 at Gmail -- All Rights Reserved. 

# 

# Permission is hereby granted, free of charge, to any person obtaining a 

# copy of this software and associated documentation files (the "Software"), 

# to deal in the Software without restriction, including without limitation 

# the rights to use, copy, modify, merge, publish, distribute, sublicense, 

# and/or sell copies of the Software, and to permit persons to whom the 

# Software is furnished to do so, subject to the following conditions: 

# 

# The above copyright notice and this permission notice shall be included 

# in all copies or substantial portions of the Software. 

# 

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 

# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 

# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 

# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 

# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 

# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 

# OTHER DEALINGS IN THE SOFTWARE.