write: end

Part_6__Metaprogramming/Chap_19__Dynamic_Attributes_and_Properties/ex_A_12__test_schedule1.py

@@ -0,0 +1,26 @@
+#  Reference: https://github.com/fluentpython/example-code-2e/blob/master/22-dyn-attr-prop/oscon/test_schedule_v1.py
+
+import pytest
+
+import ex_19_9__schedule1 as schedule
+
+
+@pytest.fixture
+def records():
+    yield schedule.load(schedule.JSON_PATH)
+
+
+def test_load(records):
+    assert len(records) == 895
+
+
+def test_record_attr_access():
+    rec = schedule.Record(spam=99, eggs=12)
+    assert rec.spam == 99
+    assert rec.eggs == 12
+
+
+def test_venue_record(records):
+    venue = records['venue.1469']
+    assert venue.serial == 1469
+    assert venue.name == 'Exhibit Hall C'

Part_6__Metaprogramming/Chap_21__Class_Metaprogramming/ex_21_14__bulkfood_v7.py

@@ -0,0 +1,15 @@
+import ex_21_15__model_v7 as model
+
+
+class LineItem(model.Entity):
+    description = model.NonBlank()
+    weight = model.Quantity()
+    price = model.Quantity()
+
+    def __init__(self, description, weight, price):
+        self.description = description
+        self.weight = weight
+        self.price = price
+
+    def subtotal(self):
+        return self.weight * self.price

Part_6__Metaprogramming/Chap_21__Class_Metaprogramming/ex_21_15__model_v7.py

@@ -0,0 +1,21 @@
+import setup
+from Chap_20__Attribute_Descriptors.ex_20_6__model_v5 import (
+    Quantity,
+    NonBlank,
+    Validated,
+)
+
+
+class EntityMeta(type):
+    """Metaclass for business entities with validated fields"""
+
+    def __init__(cls, name, bases, attr_dict):
+        super().__init__(name, bases, attr_dict)
+        for key, attr in attr_dict.items():
+            if isinstance(attr, Validated):
+                type_name = type(attr).__name__
+                attr.storage_name = '_{}#{}'.format(type_name, key)
+
+
+class Entity(metaclass=EntityMeta):
+    """Business entity with validated fields"""

requirements/requirements.txt

@@ -1,133 +1,53 @@
-appdirs==1.4.4
-apturl==0.5.2
-argon2-cffi==20.1.0
-async-generator==1.10
-attrs==20.3.0
+aiohttp==3.8.1
+aiosignal==1.2.0
+asttokens==2.0.5
+async-timeout==4.0.2
+attrs==21.4.0
 backcall==0.2.0
-bcrypt==3.1.7
-black==21.7b0
-bleach==3.3.0
-blinker==1.4
-blue==0.7.0
-bobo==2.4.0
-Brlapi==0.7.0
-certifi==2019.11.28
-cffi==1.14.5
-chardet==3.0.4
-click==8.0.1
-colorama==0.4.3
-command-not-found==0.3
-cryptography==3.3.2
-cupshelpers==1.0
-dbus-python==1.2.16
-decorator==4.4.2
-defer==1.0.6
-defusedxml==0.6.0
-distro==1.4.0
-distro-info===0.23ubuntu1
-duplicity==0.8.12.0
-entrypoints==0.3
-fasteners==0.14.1
-flake8==3.8.4
-future==0.18.2
-Guake==3.8.5
-httplib2==0.19.0
-idna==2.8
-ipykernel==5.5.0
-ipython==7.31.1
-ipython-genutils==0.2.0
-ipywidgets==7.6.3
-isodate==0.6.0
-jedi==0.18.0
-Jinja2==2.11.3
-jsonschema==3.2.0
-jupyter==1.0.0
-jupyter-client==6.1.11
-jupyter-console==6.2.0
-jupyter-core==4.7.1
-jupyterlab-pygments==0.1.2
-jupyterlab-widgets==1.0.0
-keyring==18.0.1
-language-selector==0.1
-launchpadlib==1.10.13
-lazr.restfulclient==0.14.2
-lazr.uri==1.0.3
-lockfile==0.12.2
-louis==3.12.0
-macaroonbakery==1.3.1
-Mako==1.1.0
-MarkupSafe==1.1.1
-mccabe==0.6.1
-mistune==0.8.4
-monotonic==1.5
+black==22.1.0
+certifi==2022.5.18.1
+charset-normalizer==2.0.12
+click==8.0.3
+debugpy==1.5.1
+decorator==5.1.1
+entrypoints==0.4
+executing==0.8.2
+frozenlist==1.3.0
+idna==3.3
+iniconfig==1.1.1
+ipykernel==6.9.1
+ipython==8.0.1
+jedi==0.18.1
+jupyter-client==7.1.2
+jupyter-core==4.9.2
+matplotlib-inline==0.1.3
+multidict==6.0.2
 mypy-extensions==0.4.3
-nbclient==0.5.2
-nbconvert==6.0.7
-nbformat==5.1.2
-nest-asyncio==1.5.1
-netifaces==0.10.4
-notebook==6.4.10
-numpy==1.21.0
-oauthlib==3.1.0
-olefile==0.46
-packaging==20.9
-pandocfilters==1.4.3
-paramiko==2.10.1
-parso==0.8.1
+nest-asyncio==1.5.4
+packaging==21.3
+parso==0.8.3
 pathspec==0.9.0
-pbr==5.4.5
 pexpect==4.8.0
 pickleshare==0.7.5
-Pillow==9.0.1
-prometheus-client==0.9.0
-prompt-toolkit==3.0.16
-protobuf==3.15.0
+platformdirs==2.5.0
+pluggy==1.0.0
+prompt-toolkit==3.0.28
 ptyprocess==0.7.0
-pycairo==1.16.2
-pycodestyle==2.6.0
-pycparser==2.20
-pycups==1.9.73
-pyflakes==2.2.0
-Pygments==2.8.0
-PyGObject==3.36.0
-PyJWT==2.4.0
-pymacaroons==0.13.0
-PyNaCl==1.3.0
-pyparsing==2.4.7
-pyRFC3339==1.1
-pyrsistent==0.17.3
-python-apt==2.0.0+ubuntu0.20.4.7
-python-dateutil==2.8.1
-python-debian===0.1.36ubuntu1
-pytz==2019.3
-pyxdg==0.26
-PyYAML==5.4
-pyzmq==22.0.3
-qtconsole==5.0.2
-QtPy==1.9.0
-regex==2021.9.24
-reportlab==3.5.55
-requests==2.22.0
-requests-unixsocket==0.2.0
-SecretStorage==2.3.1
-Send2Trash==1.5.0
-simplejson==3.16.0
-six==1.15.0
-systemd-python==234
-terminado==0.9.2
-testpath==0.4.4
-tomli==1.2.1
+pure-eval==0.2.2
+py==1.11.0
+Pygments==2.11.2
+pyparsing==3.0.9
+pytest==7.1.2
+python-dateutil==2.8.2
+pyzmq==22.3.0
+repackage==0.7.3
+requests==2.28.0
+six==1.16.0
+stack-data==0.2.0
+tomli==2.0.1
 tornado==6.1
-traitlets==5.0.5
-ubuntu-advantage-tools==27.6
-ubuntu-drivers-common==0.0.0
-ufw==0.36
-unattended-upgrades==0.1
-urllib3==1.26.5
-usb-creator==0.3.7
-wadllib==1.3.3
+tqdm==4.64.0
+traitlets==5.1.1
+urllib3==1.26.9
 wcwidth==0.2.5
-webencodings==0.5.1
-WebOb==1.8.7
-widgetsnbextension==3.5.1
-xkit==0.0.0
+yarl==1.7.2