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Commit 00e4741

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renumbering chapters >= 19
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‎02-array-seq/lispy/README.md‎

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[MIT license](https://github.com/norvig/pytudes/blob/60168bce8cdfacf57c92a5b2979f0b2e95367753/LICENSE).
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## Changes to Norvig's code
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I made small changes to the programs in `original/`:
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* In `lis.py`:
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* The `Procedure` class accepts a list of expressions as the `body`, and `__call__` evaluates those expressions in order, and returns the value of the last. This is consistent with Scheme's `lambda` syntax and provided a useful example for pattern matching.
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* In the `elif` block for `'lambda'`, I added the `*` in front of the `*body` variable in the tuple unpacking to capture the expressions as a list, before calling the `Procedure` constructor.
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* In `lispy.py` I made [changes and a pull request](https://github.com/norvig/pytudes/pull/106) to make it run on Python 3.
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_Luciano Ramalho<br/>June 29, 2021_

‎04-text-byte/charfinder/README.rst‎

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Test ``find`` with two results::
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>>> find('chess', 'queen', last=0xFFFF) # doctest:+NORMALIZE_WHITESPACE
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>>> find('chess', 'queen', end=0xFFFF) # doctest:+NORMALIZE_WHITESPACE
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U+2655 ♕ WHITE CHESS QUEEN
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U+265B ♛ BLACK CHESS QUEEN
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‎04-text-byte/charfinder/cf.py‎

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import sys
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import unicodedata
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FIRST, LAST = ord(' '), sys.maxunicode # <1>
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START, END = ord(' '), sys.maxunicode +1 # <1>
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def find(*query_words, first=FIRST, last=LAST): # <2>
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def find(*query_words, start=START, end=END): # <2>
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query = {w.upper() for w in query_words} # <3>
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for code in range(first, last+1):
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for code in range(start, end):
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char = chr(code) # <4>
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name = unicodedata.name(char, None) # <5>
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if name and query.issubset(name.split()): # <6>

‎05-data-classes/dataclass/club.py‎

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from dataclasses import dataclass, field
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@dataclass
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class ClubMember:
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name: str
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guests: list = field(default_factory=list)
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‎05-data-classes/dataclass/club_wrong.py‎

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# tag::CLUBMEMBER[]
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@dataclass
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class ClubMember:
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name: str
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guests: list = []
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# end::CLUBMEMBER[]

‎05-data-classes/dataclass/hackerclub.py‎

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@dataclass
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class HackerClubMember(ClubMember): # <1>
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all_handles = set() # <2>
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handle: str = '' # <3>
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def __post_init__(self):

‎05-data-classes/dataclass/hackerclub_annotated.py‎

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@dataclass
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class HackerClubMember(ClubMember):
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all_handles: ClassVar[set[str]] = set()
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handle: str = ''
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def __post_init__(self):

‎05-data-classes/dataclass/resource.py‎

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from datetime import date
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class ResourceType(Enum): # <1>
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class ResourceType(Enum): # <1>
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BOOK = auto()
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EBOOK = auto()
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VIDEO = auto()

‎05-data-classes/meaning/demo_dc.py‎

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@dataclass
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class DemoDataClass:
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a: int # <1>
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b: float = 1.1 # <2>
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c = 'spam' # <3>

‎05-data-classes/meaning/demo_nt.py‎

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import typing
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class DemoNTClass(typing.NamedTuple):
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a: int # <1>
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b: float = 1.1 # <2>
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c = 'spam' # <3>

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