یادداشت‌های پایتون برای حرفه‌ای‌ها

Content list......Page 2 About......Page 26 Section 1.1: Getting Started......Page 27 Section 1.2: Creating variables and assigning values......Page 31 Section 1.3: Block Indentation......Page 35 Section 1.4: Datatypes......Page 36 Section 1.5: Collection Types......Page 40 Section 1.6: IDLE - Python GUI......Page 44 Section 1.8: Built in Modules and Functions......Page 46 Section 1.9: Creating a module......Page 50 Section 1.10: Installation of Python 2.7.x and 3.x......Page 51 Section 1.11: String function - str() and repr()......Page 53 Section 1.12: Installing external modules using pip......Page 54 Section 1.13: Help Utility......Page 56 Section 2.3: Numbers data type......Page 58 Section 2.6: Tuple Data Type......Page 59 Section 3.2: How Indentation is Parsed......Page 60 Section 3.3: Indentation Errors......Page 61 Section 4.2: Programmatically accessing docstrings......Page 62 Section 4.3: Write documentation using docstrings......Page 63 Section 5.2: Constructing timezone-aware datetimes......Page 66 Section 5.4: Basic datetime objects usage......Page 68 Section 5.6: Simple date arithmetic......Page 69 Section 5.9: Parsing an arbitrary ISO 8601 timestamp with minimal libraries......Page 70 Section 5.11: Parsing a string with a short time zone name into a timezone aware datetime object......Page 71 Section 5.12: Fuzzy datetime parsing (extracting datetime out of a text)......Page 72 Section 5.13: Iterate over dates......Page 73 Section 6.3: Parsing string to datetime object......Page 74 Section 7.2: Iteration......Page 75 Section 8.1: Operations on sets......Page 76 Section 8.4: Set Operations using Methods and Builtins......Page 77 Section 8.5: Sets versus multisets......Page 79 Section 9.1: Division......Page 81 Section 9.2: Addition......Page 82 Section 9.3: Exponentiation......Page 83 Section 9.4: Trigonometric Functions......Page 84 Section 9.7: Multiplication......Page 85 Section 9.9: Modulus......Page 86 Section 10.1: Bitwise NOT......Page 88 Section 10.2: Bitwise XOR (Exclusive OR)......Page 89 Section 10.5: Bitwise Left Shift......Page 90 Section 10.7: Inplace Operations......Page 91 Section 11.3: Short-circuit evaluation......Page 92 Section 11.5: or......Page 93 Section 11.6: not......Page 94 Section 12.1: Simple Operator Precedence Examples in python......Page 95 Section 13.2: Global Variables......Page 96 Section 13.3: Local Variables......Page 97 Section 13.4: The del command......Page 98 Section 13.5: Functions skip class scope when looking up names......Page 99 Section 13.6: Local vs Global Scope......Page 100 Section 13.7: Binding Occurrence......Page 102 Section 14.3: Truth Values......Page 103 Section 14.4: Boolean Logic Expressions......Page 104 Section 14.6: Else statement......Page 106 Section 14.8: If statement......Page 107 Section 15.1: Chain Comparisons......Page 108 Section 15.2: Comparison by `is` vs `==`......Page 109 Section 15.4: Not equal to......Page 110 Section 15.6: Comparing Objects......Page 111 Section 16.1: Break and Continue in Loops......Page 113 Section 16.3: Iterating over lists......Page 115 Section 16.4: Loops with an "else" clause......Page 116 Section 16.5: The Pass Statement......Page 118 Section 16.6: Iterating over dictionaries......Page 119 Section 16.8: Looping and Unpacking......Page 120 Section 16.9: Iterating dierent portion of a list with dierent step size......Page 121 Section 16.10: While Loop......Page 122 Section 17.2: Basic Introduction to Arrays......Page 124 Section 17.5: Extend python array using extend() method......Page 125 Section 17.10: Reverse a python array using reverse() method......Page 126 Section 17.15: Append a string to char array using fromstring() method......Page 127 Section 18.2: Lists in lists in lists in........Page 128 Section 19.1: Introduction to Dictionary......Page 130 Section 19.3: Iterating Over a Dictionary......Page 131 Section 19.4: Dictionary with default values......Page 132 Section 19.6: Accessing keys and values......Page 133 Section 19.8: Creating a dictionary......Page 134 Section 19.10: Unpacking dictionaries using the ** operator......Page 135 Section 19.13: Dictionaries Example......Page 136 Section 19.14: All combinations of dictionary values......Page 137 Section 20.1: List methods and supported operators......Page 138 Section 20.2: Accessing list values......Page 143 Section 20.4: Iterating over a list......Page 144 Section 20.6: Any and All......Page 145 Section 20.8: Concatenate and Merge lists......Page 146 Section 20.10: Remove duplicate values in list......Page 147 Section 20.12: Accessing values in nested list......Page 148 Section 20.13: Initializing a List to a Fixed Number of Elements......Page 149 Section 21.1: List Comprehensions......Page 151 Section 21.2: Conditional List Comprehensions......Page 153 Section 21.3: Avoid repetitive and expensive operations using conditional clause......Page 155 Section 21.4: Dictionary Comprehensions......Page 156 Section 21.5: List Comprehensions with Nested Loops......Page 157 Section 21.6: Generator Expressions......Page 159 Section 21.8: Refactoring filter and map to list comprehensions......Page 161 Section 21.9: Comprehensions involving tuples......Page 162 Section 21.12: Nested List Comprehensions......Page 163 Section 21.13: Iterate two or more list simultaneously within list comprehension......Page 164 Section 22.4: Shifting a list using slicing......Page 165 Section 23.2: Example 2......Page 167 Section 23.3: Example 3......Page 168 Section 24.1: Single linked list example......Page 170 Section 25.1: Write a simple Linked List Node in python......Page 174 Section 26.2: Filter without function......Page 175 Section 26.4: Complementary function: filterfalse, ifilterfalse......Page 176 Section 27.2: Smallest item in a collection......Page 178 Section 28.1: Tuple......Page 180 Section 28.3: Packing and Unpacking Tuples......Page 181 Section 28.4: Built-in Tuple Functions......Page 182 Section 28.5: Tuple Are Element-wise Hashable and Equatable......Page 183 Section 28.7: Reversing Elements......Page 184 Section 29.2: Input from a File......Page 185 Section 29.5: Function to prompt user for a number......Page 187 Section 29.6: Printing a string without a newline at the end......Page 188 Section 30.1: File modes......Page 190 Section 30.2: Reading a file line-by-line......Page 191 Section 30.4: Getting the full contents of a file......Page 192 Section 30.5: Writing to a file......Page 193 Section 30.6: Check whether a file or path exists......Page 194 Section 30.9: Checking if a file is empty......Page 195 Section 30.12: Copying contents of one file to a dierent file......Page 196 Section 31.4: If the given path exists......Page 197 Section 31.6: Absolute Path from Relative Path......Page 198 Section 32.1: Iterator vs Iterable vs Generator......Page 199 Section 32.4: Verify only one element in iterable......Page 200 Section 32.6: Iterator isn't reentrant!......Page 201 Section 33.1: Defining and calling simple functions......Page 202 Section 33.2: Defining a function with an arbitrary number of arguments......Page 203 Section 33.3: Lambda (Inline/Anonymous) Functions......Page 206 Section 33.4: Defining a function with optional arguments......Page 208 Section 33.5: Defining a function with optional mutable arguments......Page 209 Section 33.6: Argument passing and mutability......Page 210 Section 33.8: Closure......Page 211 Section 33.9: Forcing the use of named parameters......Page 212 Section 33.11: Recursion limit......Page 213 Section 33.13: Recursive functions......Page 214 Section 33.15: Iterable and dictionary unpacking......Page 215 Section 33.16: Defining a function with multiple arguments......Page 217 Section 34.1: Function and Call......Page 218 Section 35.4: Filter Function......Page 219 Section 36.1: Raise the power......Page 220 Section 37.1: Decorator function......Page 221 Section 37.2: Decorator class......Page 222 Section 37.3: Decorator with arguments (decorator factory)......Page 223 Section 37.5: Using a decorator to time a function......Page 225 Section 37.6: Create singleton class with a decorator......Page 226 Section 38.1: Introduction to classes......Page 227 Section 38.2: Bound, unbound, and static methods......Page 228 Section 38.3: Basic inheritance......Page 230 Section 38.5: New-style vs. old-style classes......Page 232 Section 38.6: Class methods: alternate initializers......Page 233 Section 38.7: Multiple Inheritance......Page 235 Section 38.8: Properties......Page 237 Section 38.9: Default values for instance variables......Page 238 Section 38.10: Class and instance variables......Page 239 Section 38.11: Class composition......Page 240 Section 38.12: Listing All Class Members......Page 241 Section 38.13: Singleton class......Page 242 Section 38.14: Descriptors and Dotted Lookups......Page 243 Section 39.1: Basic Metaclasses......Page 244 Section 39.4: Introduction to Metaclasses......Page 245 Section 39.5: Custom functionality with metaclasses......Page 246 Section 39.6: The default metaclass......Page 247 Section 40.1: Basics of String Formatting......Page 249 Section 40.2: Alignment and padding......Page 250 Section 40.4: Float formatting......Page 251 Section 40.5: Named placeholders......Page 252 Section 40.7: Formatting Numerical Values......Page 253 Section 40.10: Padding and truncating strings, combined......Page 254 Section 40.11: Custom formatting for a class......Page 255 Section 41.1: Changing the capitalization of a string......Page 257 Section 41.2: str.translate: Translating characters in a string......Page 258 Section 41.3: str.format and f-strings: Format values into a string......Page 259 Section 41.4: String module's useful constants......Page 260 Section 41.5: Stripping unwanted leading/trailing characters from a string......Page 261 Section 41.7: Split a string based on a delimiter into a list of strings......Page 262 Section 41.8: Replace all occurrences of one substring with another substring......Page 263 Section 41.9: Testing what a string is composed of......Page 264 Section 41.11: Join a list of strings into one string......Page 266 Section 41.13: Case insensitive string comparisons......Page 267 Section 41.14: Justify strings......Page 268 Section 41.15: Test the starting and ending characters of a string......Page 269 Section 41.16: Conversion between str or bytes data and unicode characters......Page 270 Section 42.1: Return statement inside loop in a function......Page 272 Section 43.1: Importing a module......Page 273 Section 43.2: The __all__ special variable......Page 274 Section 43.4: Importing all names from a module......Page 275 Section 43.6: PEP8 rules for Imports......Page 276 Section 43.9: Re-importing a module......Page 277 Section 43.10: __import__() function......Page 278 Section 44.2: Packages......Page 279 Section 45.1: Rounding: round, floor, ceil, trunc......Page 280 Section 45.2: Trigonometry......Page 281 Section 45.4: Infinity and NaN ("not a number")......Page 282 Section 45.6: Constants......Page 285 Section 45.9: Complex numbers and the cmath module......Page 286 Section 46.1: Advanced complex arithmetic......Page 289 Section 46.2: Basic complex arithmetic......Page 290 Section 47.1: collections.Counter......Page 291 Section 47.2: collections.OrderedDict......Page 292 Section 47.3: collections.defaultdict......Page 293 Section 47.4: collections.namedtuple......Page 294 Section 47.5: collections.deque......Page 295 Section 47.6: collections.ChainMap......Page 296 Section 48.3: Methodcaller......Page 298 Section 49.3: Formatting JSON output......Page 300 Section 49.4: `load` vs `loads`, `dump` vs `dumps`......Page 301 Section 49.6: JSON encoding custom objects......Page 302 Section 49.8: Creating Python dict from JSON......Page 303 Section 50.2: Getting the values from the database and Error handling......Page 304 Section 51.1: makedirs - recursive directory creation......Page 306 Section 51.7: Change permissions on a file......Page 307 Section 52.1: Currency Formatting US Dollars Using the locale Module......Page 308 Section 53.2: itertools.dropwhile......Page 309 Section 53.4: Take a slice of a generator......Page 310 Section 53.5: Grouping items from an iterable object using a function......Page 311 Section 53.7: itertools.permutations......Page 312 Section 53.11: itertools.product......Page 313 Section 53.12: itertools.count......Page 314 Section 53.13: Chaining multiple iterators together......Page 315 Section 54.1: Coroutine and Delegation Syntax......Page 316 Section 54.2: Asynchronous Executors......Page 317 Section 54.4: Synchronization Primitive: Event......Page 318 Section 54.6: Common Misconception about asyncio......Page 319 Section 55.2: Create cryptographically secure random numbers......Page 321 Section 55.3: Random and sequences: shue, choice and sample......Page 322 Section 55.4: Creating random integers and floats: randint, randrange, random, and uniform......Page 323 Section 55.5: Reproducible random numbers: Seed and State......Page 324 Section 55.6: Random Binary Decision......Page 325 Section 56.3: lru_cache......Page 326 Section 56.4: total_ordering......Page 327 Section 56.5: reduce......Page 328 Section 57.3: Disassembling modules......Page 329 Chapter 58: The base64 Module......Page 331 Section 58.1: Encoding and Decoding Base64......Page 332 Section 58.2: Encoding and Decoding Base32......Page 333 Section 58.4: Encoding and Decoding ASCII85......Page 334 Section 58.5: Encoding and Decoding Base85......Page 335 Section 59.1: Simple example......Page 336 Section 60.2: Available methods in deque......Page 337 Section 60.4: Breadth First Search......Page 338 Section 61.1: Opening a URL with Default Browser......Page 339 Section 61.2: Opening a URL with Dierent Browsers......Page 340 Section 62.1: Geometry Managers......Page 341 Section 62.2: A minimal tkinter Application......Page 342 Section 63.3: Screenshot And Image Recognition......Page 344 Section 64.1: Basic Slicing......Page 345 Section 64.4: Making a shallow copy of an array......Page 346 Section 64.5: Indexing custom classes: __getitem__, __setitem__ and __delitem__......Page 347 Section 64.6: Basic Indexing......Page 348 Section 65.1: Plots with Common X-axis but dierent Y-axis : Using twinx()......Page 349 Section 65.2: Plots with common Y-axis and dierent X-axis using twiny()......Page 350 Section 65.3: A Simple Plot in Matplotlib......Page 352 Section 65.4: Adding more features to a simple plot : axis labels, title, axis ticks, grid, and legend......Page 353 Section 65.5: Making multiple plots in the same figure by superimposition similar to MATLAB......Page 354 Section 65.6: Making multiple Plots in the same figure using plot superimposition with separate plot commands......Page 355 Section 66.2: PyGraphviz......Page 357 Section 67.1: Introduction......Page 359 Section 67.2: Infinite sequences......Page 361 Section 67.3: Sending objects to a generator......Page 362 Section 67.6: The next() function......Page 363 Section 67.8: Refactoring list-building code......Page 364 Section 67.9: Yield with recursion: recursively listing all files in a directory......Page 365 Section 67.12: Searching......Page 366 Section 67.13: Iterating over generators in parallel......Page 367 Section 68.2: Using reduce......Page 368 Section 68.4: Non short-circuit variant of any/all......Page 369 Section 69.2: Mapping each value in an iterable......Page 370 Section 69.3: Mapping values of dierent iterables......Page 371 Section 69.5: Series and Parallel Mapping......Page 373 Section 70.2: Square root: math.sqrt() and cmath.sqrt......Page 376 Section 70.4: Computing large integer roots......Page 377 Section 70.5: Exponentiation using the math module: math.pow()......Page 378 Section 70.7: Exponential function minus 1: math.expm1()......Page 379 Section 70.8: Magic methods and exponentiation: builtin, math and cmath......Page 380 Section 70.9: Roots: nth-root with fractional exponents......Page 381 Section 71.2: Searching in custom classes: __contains__ and __iter__......Page 382 Section 71.3: Getting the index for strings: str.index(), str.rindex() and str.find(), str.rfind()......Page 383 Section 71.5: Searching key(s) for a value in dict......Page 384 Section 71.7: Searching nested sequences......Page 385 Section 72.1: Make custom classes orderable......Page 387 Section 72.2: Special case: dictionaries......Page 389 Section 72.4: Default Argument to max, min......Page 390 Section 72.6: Extracting N largest or N smallest items from an iterable......Page 391 Section 72.8: Minimum and Maximum of a sequence......Page 392 Section 73.3: Counting the occurrences of one item in a sequence: list.count() and tuple.count()......Page 393 Section 73.5: Counting occurrences in numpy array......Page 394 Section 74.1: Print basics......Page 395 Section 74.2: Print parameters......Page 396 Section 75.1: Matching the beginning of a string......Page 398 Section 75.3: Precompiled patterns......Page 399 Section 75.4: Flags......Page 400 Section 75.6: Find All Non-Overlapping Matches......Page 401 Section 75.9: Grouping......Page 402 Section 75.10: Escaping Special Characters......Page 403 Section 75.11: Match an expression only in specific locations......Page 404 Section 75.12: Iterating over matches using `re.finditer`......Page 405 Section 76.5: Copy a set......Page 406 Section 77.2: Writing your own context manager......Page 408 Section 77.3: Writing your own contextmanager using generator syntax......Page 409 Section 77.5: Assigning to a target......Page 410 Section 77.6: Manage Resources......Page 411 Section 78.3: function_class_or_module.__name__......Page 412 Section 79.1: Perform checks using os.access......Page 414 Section 80.2: Uploading to PyPI......Page 415 Section 80.3: Making package executable......Page 417 Section 81.2: Handling ImportError Exception......Page 419 Section 81.3: Force install......Page 420 Section 82.3: Upgrade Packages......Page 421 Section 82.7: Create a requirements.txt file of all packages on the system......Page 422 Section 82.9: Create a requirements.txt file of packages only in the current virtualenv......Page 423 Section 82.10: Installing packages not yet on pip as wheels......Page 424 Section 83.2: Using command line arguments with argv......Page 427 Section 83.3: Setting mutually exclusive arguments with argparse......Page 428 Section 83.5: Custom parser error message with argparse......Page 429 Section 83.6: Conceptual grouping of arguments with argparse.add_argument_group()......Page 430 Section 83.7: Advanced example with docopt and docopt_dispatch......Page 431 Section 84.1: More flexibility with Popen......Page 433 Section 84.3: How to create the command list argument......Page 434 Section 85.2: Using source control metadata in setup.py......Page 435 Section 85.4: Adding installation options......Page 436 Section 86.1: The What, How, and When of Recursion......Page 438 Section 86.2: Tree exploration with recursion......Page 441 Section 86.4: Increasing the Maximum Recursion Depth......Page 442 Section 86.6: Tail Recursion Optimization Through Stack Introspection......Page 443 Section 87.1: Adding types to a function......Page 445 Section 87.4: Variables and Attributes......Page 446 Section 87.6: Type hints for keyword arguments......Page 447 Section 88.2: Do not catch everything!......Page 448 Section 88.4: Catching multiple exceptions......Page 449 Section 88.5: Exception Hierarchy......Page 450 Section 88.7: Raising Exceptions......Page 452 Section 88.9: Practical examples of exception handling......Page 453 Section 88.11: Running clean-up code with finally......Page 454 Section 88.12: Chain exceptions with raise from......Page 455 Section 89.2: Catch custom Exception......Page 456 Section 90.1: Other Errors......Page 457 Section 90.2: NameError: name '???' is not defined......Page 458 Section 90.3: TypeErrors......Page 459 Section 90.4: Syntax Error on good code......Page 460 Section 90.5: IndentationErrors (or indentation SyntaxErrors)......Page 461 Section 91.2: HTTP POST......Page 463 Section 91.3: Decode received bytes according to content type encoding......Page 464 Section 92.2: Scraping using Selenium WebDriver......Page 465 Section 92.4: Maintaining web-scraping session with requests......Page 466 Section 92.8: Scraping with curl......Page 467 Section 93.2: PyQuery......Page 469 Section 93.3: Locate a text after an element in BeautifulSoup......Page 470 Section 94.2: Create and Build XML Documents......Page 471 Section 94.4: Searching the XML with XPath......Page 472 Section 94.5: Opening and reading large XML files using iterparse (incremental parsing)......Page 473 Section 95.1: Simple Post......Page 474 Section 95.3: File Upload......Page 475 Section 95.5: Authentication......Page 476 Section 95.6: Proxies......Page 477 Section 96.1: py2app......Page 479 Section 96.2: cx_Freeze......Page 480 Section 97.2: Using the @property decorator......Page 481 Section 97.4: Using properties without decorators......Page 482 Section 98.1: Operator overloading......Page 485 Section 98.2: Magic/Dunder Methods......Page 486 Section 98.3: Container and sequence types......Page 487 Section 98.5: Handling unimplemented behaviour......Page 488 Section 99.2: Basic Polymorphism......Page 490 Section 100.1: Basic method overriding......Page 493 Section 101.1: Creating user-defined method objects......Page 494 Section 101.2: Turtle example......Page 495 Section 102.1: Motivation......Page 496 Section 102.2: Both methods implemented, eval-round-trip style __repr__()......Page 500 Section 103.2: The Python Debugger: Step-through Debugging with _pdb_......Page 501 Section 103.3: Remote debugger......Page 503 Section 104.2: Writing a TSV file......Page 504 Section 105.2: Appending a String as a newline in a CSV file......Page 505 Section 106.3: Evaluating statements with exec......Page 506 Section 106.6: Evaluating an expression with eval using custom globals......Page 507 Section 107.2: Using Pyinstaller......Page 508 Section 107.4: Bundling to a Single File......Page 509 Section 108.1: Seaborn......Page 510 Section 108.2: Matplotlib......Page 512 Section 108.3: Plotly......Page 513 Section 108.4: MayaVI......Page 515 Section 109.2: Referring to the last expression......Page 517 Section 109.5: Command line arguments......Page 518 Section 109.6: Getting help about an object......Page 519 Section 110.2: Using *args when writing functions......Page 521 Section 110.6: **kwargs and default values......Page 522 Section 110.7: Using *args when calling functions......Page 523 Section 111.2: Eects of the del command......Page 524 Section 111.4: Garbage Collector for Reference Cycles......Page 525 Section 111.5: Forcefully deallocating objects......Page 526 Section 111.8: Managing garbage collection......Page 527 Section 112.2: Customize Pickled Data......Page 529 Section 113.3: Packing a structure......Page 531 Section 114.3: Use truth value testing......Page 533 Section 114.4: Test for "__main__" to avoid unexpected code execution......Page 534 Section 115.2: Serialization using Pickle......Page 535 Section 116.2: Using Pool and Map......Page 537 Section 117.1: Basics of multithreading......Page 539 Section 117.2: Communicating between threads......Page 540 Section 117.4: Advanced use of multithreads......Page 541 Section 117.5: Stoppable Thread with a while Loop......Page 543 Section 118.1: Global Interpreter Lock......Page 544 Section 118.2: Running in Multiple Threads......Page 545 Section 118.4: Sharing State Between Threads......Page 546 Section 118.5: Sharing State Between Processes......Page 547 Section 119.1: The multiprocessing module......Page 548 Section 119.3: Passing data between multiprocessing processes......Page 549 Section 120.3: Using Parent and Children scripts to execute code in parallel......Page 551 Section 120.4: Using PyPar module to parallelize......Page 552 Section 121.2: Sending data via UDP......Page 553 Section 121.5: Multi-threaded TCP Socket Server......Page 554 Section 122.2: Wrapper Class with aiohttp......Page 557 Section 122.3: Using Autobahn as a Websocket Factory......Page 558 Section 123.1: Server side Implementation......Page 560 Section 123.2: Client side Implementation......Page 562 Section 124.2: Creating a TCP server......Page 564 Section 124.4: Start Simple HttpServer in a thread and open the browser......Page 565 Section 124.5: The simplest Python socket client-server example......Page 566 Section 125.2: Serving files......Page 567 Section 125.3: Basic handling of GET, POST, PUT using BaseHTTPRequestHandler......Page 568 Section 125.4: Programmatic API of SimpleHTTPServer......Page 569 Section 126.2: The basics......Page 571 Section 126.3: Routing URLs......Page 572 Section 126.5: Jinja Templating......Page 573 Section 126.6: The Request Object......Page 574 Section 127.1: How to consume messages from RabbitMQ......Page 576 Section 127.3: How to create a delayed queue in RabbitMQ......Page 577 Section 128.1: Simple descriptor......Page 580 Section 128.2: Two-way conversions......Page 581 Section 129.1: Create (and write to a) known, persistent temporary file......Page 582 Section 130.1: Basic Code to Import, Subset and Write External Data Files Using Pandas......Page 583 Section 131.2: Using Python TarFile.extractall() to decompress a tarball......Page 585 Section 132.2: Opening Zip Files......Page 586 Section 132.4: Creating new archives......Page 587 Section 133.1: Read and write GNU zip files......Page 588 Section 134.1: Creating a Stack class with a List Object......Page 589 Section 134.2: Parsing Parentheses......Page 590 Section 135.1: Multiprocessing.Pool......Page 591 Section 135.2: Cython nogil:......Page 592 Section 136.1: Uploading a Conda Package......Page 593 Section 137.1: Introduction to Python Logging......Page 595 Section 137.2: Logging exceptions......Page 596 Section 138.1: Server Object (Method)......Page 599 Section 139.2: Asyncio SSE......Page 600 Section 140.2: Use a dict of functions......Page 601 Section 140.3: Use class introspection......Page 602 Section 140.4: Using a context manager......Page 603 Section 141.1: Destructuring assignment......Page 604 Section 141.2: Packing function arguments......Page 605 Section 141.3: Unpacking function arguments......Page 607 Section 142.2: Display the source code of an object......Page 608 Section 142.3: Exploring the code object of a function......Page 609 Section 143.1: Mixin......Page 610 Section 143.2: Overriding Methods in Mixins......Page 611 Section 144.2: Setters, Getters & Properties......Page 612 Section 145.2: Printing one field's value for all rows of feature class in file geodatabase using Search Cursor......Page 614 Section 146.2: Why/How to use ABCMeta and @abstractmethod......Page 615 Section 147.1: Mixins......Page 617 Section 147.2: Plugins with Customized Classes......Page 618 Section 148.3: Frozenset's are immutable and not assignable......Page 620 Section 149.1: Integer Division......Page 621 Section 149.2: Unpacking Iterables......Page 622 Section 149.3: Strings: Bytes versus Unicode......Page 624 Section 149.4: Print statement vs. Print function......Page 626 Section 149.5: Dierences between range and xrange functions......Page 627 Section 149.6: Raising and handling Exceptions......Page 628 Section 149.7: Leaked variables in list comprehension......Page 630 Section 149.9: User Input......Page 631 Section 149.11: .next() method on iterators renamed......Page 632 Section 149.13: Renamed modules......Page 633 Section 149.15: long vs. int......Page 634 Section 149.16: All classes are "new-style classes" in Python 3......Page 635 Section 149.18: Absolute/Relative Imports......Page 636 Section 149.19: map()......Page 638 Section 149.20: The round() function tie-breaking and return type......Page 639 Section 149.22: cmp function removed in Python 3......Page 640 Section 149.25: exec statement is a function in Python 3......Page 641 Section 149.26: encode/decode to hex no longer available......Page 642 Section 149.28: Class Boolean Value......Page 643 Section 149.29: hasattr function bug in Python 2......Page 644 Section 150.1: Basic Usage......Page 645 Section 151.2: Jython......Page 647 Section 151.3: Transcrypt......Page 648 Section 152.1: Analyze functions in a python script......Page 651 Section 153.2: File I/O......Page 653 Section 153.3: Basics......Page 654 Section 154.3: Check what serial ports are available on your machine......Page 656 Section 155.4: Query 1 : Autocomplete on News Titles......Page 658 Section 155.6: Cypher Query Samples......Page 659 Section 156.2: Basic Invocation Example......Page 660 Section 157.2: Changing delimiter......Page 661 Section 158.2: Convert files to JPEG......Page 662 Section 159.2: Create a new Exception that can be caught......Page 663 Section 160.2: argparse (default help formatter)......Page 664 Section 160.3: argparse (custom help formatter)......Page 665 Section 161.1: SQLite......Page 667 Section 161.2: Accessing MySQL database using MySQLdb......Page 672 Section 161.3: Connection......Page 673 Section 161.4: PostgreSQL Database access using psycopg2......Page 674 Section 161.5: Oracle database......Page 675 Section 161.6: Using sqlalchemy......Page 677 Section 162.1: Connect to Server, Create Table, Query Data......Page 678 Section 163.1: Getting Started......Page 679 Section 164.2: Format Excel files with xlsxwriter......Page 680 Section 164.3: Put list data into a Excel's file......Page 681 Section 164.5: Create excel charts with xlsxwriter......Page 682 Section 165.1: Ninja Twist (Turtle Graphics)......Page 685 Section 166.1: Python Persistence......Page 686 Section 166.2: Function utility for save and load......Page 687 Section 167.1: Introduction to design patterns and Singleton Pattern......Page 688 Section 167.2: Strategy Pattern......Page 690 Section 167.3: Proxy......Page 691 Section 168.1: MD5 hash of a string