sync with Atlas

Author: ramalho

02-array-seq/match_lat_lon.py

@@ -23,8 +23,8 @@
 def main():
     print(f'{"":15} | {"latitude":>9} | {"longitude":>9}')
     for record in metro_areas:
-        match record:
-            case [name, _, _, (lat, lon)] if lon <= 0:
+        match record:  # <1>
+            case [name, _, _, (lat, lon)] if lon <= 0:  # <2>
                 print(f'{name:15} | {lat:9.4f} | {lon:9.4f}')
 # end::MAIN[]
 

04-text-byte/charfinder/README.rst

@@ -0,0 +1,72 @@
+========================
+Character Finder Utility
+========================
+
+Usage tips
+==========
+
+`cf.py` works as an executable on Unix-like systems,
+if you have `python3` on your `$PATH`::
+
+    $ chmod +x cf.py
+    $ ./cf.py cat eyes
+    U+1F638	😸	GRINNING CAT FACE WITH SMILING EYES
+    U+1F63B	😻	SMILING CAT FACE WITH HEART-SHAPED EYES
+    U+1F63D	😽	KISSING CAT FACE WITH CLOSED EYES
+
+Use `wc -l` to count the number of hits::
+
+    $ ./cf.py hieroglyph | wc -l
+    1663
+
+With `tee` you can get the output and the count::
+
+    $ ./cf.py trigram | tee >(wc -l)
+    U+2630	☰	TRIGRAM FOR HEAVEN
+    U+2631	☱	TRIGRAM FOR LAKE
+    U+2632	☲	TRIGRAM FOR FIRE
+    U+2633	☳	TRIGRAM FOR THUNDER
+    U+2634	☴	TRIGRAM FOR WIND
+    U+2635	☵	TRIGRAM FOR WATER
+    U+2636	☶	TRIGRAM FOR MOUNTAIN
+    U+2637	☷	TRIGRAM FOR EARTH
+    8
+
+
+Running the tests
+=================
+
+Run the ``doctest`` module from the command line on 
+this README.rst file (using ``-v`` to make tests visible)::
+
+    $ python3 -m doctest README.rst -v
+
+That's what the ``test.sh`` script does.
+
+
+Tests
+-----
+
+Import functions for testing::
+
+    >>> from cf import find, main
+
+Test ``find`` with single result::
+
+    >>> find('sign', 'registered')  # doctest:+NORMALIZE_WHITESPACE
+    U+00AE	®	REGISTERED SIGN
+
+Test ``find`` with two results::
+
+    >>> find('chess', 'queen', last=0xFFFF)  # doctest:+NORMALIZE_WHITESPACE
+    U+2655	♕	WHITE CHESS QUEEN
+    U+265B	♛	BLACK CHESS QUEEN
+
+Test ``find`` with no results::
+
+    >>> find('no_such_character')
+
+Test ``main`` with no words::
+
+    >>> main([])
+    Please provide words to find.

04-text-byte/charfinder/cf.py

@@ -4,25 +4,19 @@
 
 FIRST, LAST = ord(' '), sys.maxunicode              # <1>
 
-
 def find(*query_words, first=FIRST, last=LAST):     # <2>
     query = {w.upper() for w in query_words}        # <3>
-    count = 0
     for code in range(first, last + 1):
         char = chr(code)                            # <4>
         name = unicodedata.name(char, None)         # <5>
         if name and query.issubset(name.split()):   # <6>
             print(f'U+{code:04X}\t{char}\t{name}')  # <7>
-            count += 1
-    print(f'({count} found)')
-
 
 def main(words):
     if words:
         find(*words)
     else:
         print('Please provide words to find.')
 
-
 if __name__ == '__main__':
     main(sys.argv[1:])

04-text-byte/charfinder/cf_tests.rst

@@ -1,2 +1,2 @@
 #!/bin/bash
-python3 -m doctest cf_tests.rst $1
+python3 -m doctest README.rst $1

04-text-byte/charfinder/test.sh

@@ -1,40 +1,48 @@
 """
-    >>> clip('banana ', 6)
-    'banana'
-    >>> clip('banana ', 7)
-    'banana'
-    >>> clip('banana ', 5)
+    >>> clip('banana split', 5)
     'banana'
     >>> clip('banana split', 6)
     'banana'
     >>> clip('banana split', 7)
     'banana'
-    >>> clip('banana split', 10)
+    >>> clip('banana split', 8)
     'banana'
     >>> clip('banana split', 11)
     'banana'
     >>> clip('banana split', 12)
     'banana split'
-    >>> clip('bananasplit', 5)
-    'bananasplit'
-    >>> clip('banana  split', 8)
-    'banana'
+    >>> clip('banana-split', 3)
+    'banana-split'
+
+Jess' tests:
+
+    >>> text = 'The quick brown fox jumps over the lazy dog.'
+    >>> clip14 = clip(text, max_len=14)
+    >>> clip14
+    'The quick'
+    >>> len(clip14)
+    9
+    >>> clip15 = clip(text, max_len=15)
+    >>> clip15
+    'The quick brown'
+    >>> len(clip15)
+    15
+
 """
 
 # tag::CLIP[]
 def clip(text, max_len=80):
-    """Return text clipped at the last space before or after max_len"""
+    """Return max_len characters clipped at space if possible"""
     text = text.rstrip()
-    end = len(text)
-    if end <= max_len:
+    if len(text) <= max_len or ' ' not in text:
         return text
-    space_before = text.rfind(' ', 0, max_len)
-    if space_before >= 0:
-        end = space_before
+    end = len(text)
+    space_at = text.rfind(' ', 0, max_len + 1)
+    if space_at >= 0:
+        end = space_at
     else:
-        space_after = text.find(' ', max_len)
-        if space_after >= 0:
-            end = space_after
+        space_at = text.find(' ', max_len)
+        if space_at >= 0:
+            end = space_at
     return text[:end].rstrip()
 # end::CLIP[]
-

07-1class-func/clip.py

@@ -4,6 +4,6 @@
 >>> clip.__code__  # doctest: +ELLIPSIS
 <code object clip at 0x...>
 >>> clip.__code__.co_varnames
-('text', 'max_len', 'end', 'space_before', 'space_after')
+('text', 'max_len', 'end', 'space_at')
 >>> clip.__code__.co_argcount
 2

07-1class-func/clip_introspection.rst

@@ -1,19 +1,19 @@
 # tag::BOOKDICT[]
-from typing import TypedDict, List
+from typing import TypedDict
 import json
 
 class BookDict(TypedDict):
     isbn: str
     title: str
-    authors: List[str]
+    authors: list[str]
     pagecount: int
 # end::BOOKDICT[]
 
 # tag::TOXML[]
 AUTHOR_EL = '<AUTHOR>{}</AUTHOR>'
 
 def to_xml(book: BookDict) -> str:  # <1>
-    elements: List[str] = []  # <2>
+    elements: list[str] = []  # <2>
     for key, value in book.items():
         if isinstance(value, list):  # <3>
             elements.extend(
@@ -29,4 +29,4 @@ def to_xml(book: BookDict) -> str:  # <1>
 def from_json(data: str) -> BookDict:
     whatever: BookDict = json.loads(data)  # <1>
     return whatever  # <2>
-# end::FROMJSON[]
+# end::FROMJSON[]