From ebffdc1ac35ba0f54c00cbd9af7d8a63957677c4 Mon Sep 17 00:00:00 2001
From: Simon Kozhin <fervin001@gmail.com>
Date: Wed, 5 Oct 2022 05:41:04 +0300
Subject: [PATCH 1/2] HW4 is completed

---
 homeworks/Simon Kozhin/hw4/__init__.py |  0
 homeworks/Simon Kozhin/hw4/contract.py | 53 ++++++++++++++++
 homeworks/Simon Kozhin/hw4/hw4.md      | 85 ++++++++++++++++++++++++++
 3 files changed, 138 insertions(+)
 create mode 100644 homeworks/Simon Kozhin/hw4/__init__.py
 create mode 100644 homeworks/Simon Kozhin/hw4/contract.py
 create mode 100644 homeworks/Simon Kozhin/hw4/hw4.md

diff --git a/homeworks/Simon Kozhin/hw4/__init__.py b/homeworks/Simon Kozhin/hw4/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/homeworks/Simon Kozhin/hw4/contract.py b/homeworks/Simon Kozhin/hw4/contract.py
new file mode 100644
index 0000000..9a3520a
--- /dev/null
+++ b/homeworks/Simon Kozhin/hw4/contract.py	
@@ -0,0 +1,53 @@
+
+
+class ContractError(Exception):
+    """We use this error when someone breaks our contract."""
+    def __init__(self, *args):
+        if args:
+            self.message = args[0]
+        else:
+            self.message = None
+    def __str__(self):
+        if self.message:
+            return (f"ContractError {self.message}")
+        else:
+            return ("ContractError has been raised")
+
+
+
+
+#: Special value, that indicates that validation for this type is not required.
+Any = object()
+
+
+def contract(arg_types=None, return_type=None, raises=None):
+    def decorator(func):
+        def wrapped(*args, **kwargs):
+            for index, value in enumerate(tuple((*args, *kwargs,))):
+                if type(value) is not Any and type(value) != arg_types[index]:
+                    raise ContractError ("Не поддерживаемый тип данных") from TypeError
+            
+            try:
+                a = func(*args, **kwargs)
+            except(Exception
+                    if raises is None or Any in raises
+                    else raises) as ex:
+                raise ex
+            
+            except(Exception) as ex:
+                raise ContractError(f"Непредвиденная ошибка {type(ex)} ")
+
+            if type(a) != return_type and type(a) is not Any:               
+                raise ContractError("Неверный тип возвращаемых данных")
+            return a
+                
+        return wrapped
+    return decorator
+   
+@contract(arg_types=(int, Any))
+def add_two_numbers(first, second):
+    return first + second
+
+add_two_numbers(1, 2)  # ok
+add_two_numbers(1, 3.4)  # ok
+add_two_numbers(2.1, 1)  # raises ContractError
\ No newline at end of file
diff --git a/homeworks/Simon Kozhin/hw4/hw4.md b/homeworks/Simon Kozhin/hw4/hw4.md
new file mode 100644
index 0000000..b0a3fc2
--- /dev/null
+++ b/homeworks/Simon Kozhin/hw4/hw4.md	
@@ -0,0 +1,85 @@
+## Теория
+
+### Exceptions
+
+- `try/except/else/finally`: https://pythonz.net/references/named/try-except-finally/
+- `raise`: https://pythonz.net/references/named/raise/
+- Иерархия Exception: https://docs.python.org/3/library/exceptions.html#exception-hierarchy
+- Когда не нужно использовать Exception? https://sobolevn.me/2019/02/python-exceptions-considered-an-antipattern
+
+### Decorators
+
+- Декораторы шаг за шагом: https://pythonworld.ru/osnovy/dekoratory.html
+
+### Generators
+
+- Iterable vs Iterator vs Generator: https://nvie.com/posts/iterators-vs-generators/
+
+### Comprehensions
+
+- Comprehensions: https://python-3-patterns-idioms-test.readthedocs.io/en/latest/Comprehensions.html
+
+### Context managers
+
+- Менеджеры контекста: https://pythonz.net/references/named/contextmanager/
+- `with`: https://pythonz.net/references/named/with/
+
+
+## Практика
+
+Задача: реализовать декоратор `@contract`. Смотри файл `contract.py`
+
+Требования:
+
+1. Необходимо проверять типы аргументов и тип выходного значения функции. Указываем кортеж типов для `arg_types`. Каждый тип в кортеже - соответсвует типу аргумента. Для типа выходного значения - указываем `return_type`
+
+```python
+@contract(arg_types=(int, int), return_type=int)
+def add_two_numbers(first, second):
+    return first + second
+
+add_two_numbers(1, 2)  # ok
+```
+
+2. Если передан неправильный тип, вызываем ошибку `ContractError`:
+
+```python
+add_two_numbers('a', 'b')  # raises ContractError
+```
+
+3. Параметр `raises` отвечает за типы исключений, которые функция может кидать. Если выкинутое исключение отсутсвует в списке разрешенных, то мы добавляем `ContractError` (смотри `raise from`). Пример:
+
+```python
+@contract(arg_types=(int, int), return_type=float, raises=(ZeroDivisionError,))
+def div(first, second):
+    return first / second
+
+div(1, 2)  # ok
+div(1, 0)  # raises ZeroDisionError
+div(1, None)  # raises ContractError from TypeError
+```
+
+4. Можно не передавать какое-то значение из `arg_types` или `return_type`. Или передать значение `None`: тогда ничего не будет происходить. Пример:
+
+```python
+# validates only return type, args and raises are ignored:
+@contract(return_type=int)
+
+# validation is completely disabled:
+@contract(return_type=None, arg_types=None, raises=None)
+
+# return type and raises checks are disabled:
+@contract(arg_types=(str, str))
+```
+
+5. Можно передать специальное значение `Any` для того, чтобы игнорировать какой-то один тип внутри `arg_types` или `raises`. Например:
+
+```python
+@contract(arg_types=(int, Any))
+def add_two_numbers(first, second):
+    return first + second
+
+add_two_numbers(1, 2)  # ok
+add_two_numbers(1, 3.4)  # ok
+add_two_numbers(2.1, 1)  # raises ContractError
+```

From 95db72227647b3d797def43a0392d37c81e5f24a Mon Sep 17 00:00:00 2001
From: CLleese <simeon.kozhin@gmail.com>
Date: Wed, 19 Oct 2022 12:29:47 +0300
Subject: [PATCH 2/2] HomeWork 6 is done!

---
 .../hw6/my-awesome-script/README.md           |   0
 .../my_awesome_script/__init__.py             |   0
 .../my_awesome_script/my_awesome_script.py    |  56 +++
 .../hw6/my-awesome-script/poetry.lock         | 324 ++++++++++++++++++
 .../hw6/my-awesome-script/pyproject.toml      |  25 ++
 .../hw6/my-awesome-script/tests/__init__.py   |   0
 6 files changed, 405 insertions(+)
 create mode 100644 homeworks/Simon Kozhin/hw6/my-awesome-script/README.md
 create mode 100644 homeworks/Simon Kozhin/hw6/my-awesome-script/my_awesome_script/__init__.py
 create mode 100644 homeworks/Simon Kozhin/hw6/my-awesome-script/my_awesome_script/my_awesome_script.py
 create mode 100644 homeworks/Simon Kozhin/hw6/my-awesome-script/poetry.lock
 create mode 100644 homeworks/Simon Kozhin/hw6/my-awesome-script/pyproject.toml
 create mode 100644 homeworks/Simon Kozhin/hw6/my-awesome-script/tests/__init__.py

diff --git a/homeworks/Simon Kozhin/hw6/my-awesome-script/README.md b/homeworks/Simon Kozhin/hw6/my-awesome-script/README.md
new file mode 100644
index 0000000..e69de29
diff --git a/homeworks/Simon Kozhin/hw6/my-awesome-script/my_awesome_script/__init__.py b/homeworks/Simon Kozhin/hw6/my-awesome-script/my_awesome_script/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/homeworks/Simon Kozhin/hw6/my-awesome-script/my_awesome_script/my_awesome_script.py b/homeworks/Simon Kozhin/hw6/my-awesome-script/my_awesome_script/my_awesome_script.py
new file mode 100644
index 0000000..ba40c7b
--- /dev/null
+++ b/homeworks/Simon Kozhin/hw6/my-awesome-script/my_awesome_script/my_awesome_script.py	
@@ -0,0 +1,56 @@
+import argparse
+
+
+ARG_HELP_FUNC = '''cowsay "Some text" - you get a cow what say your text ***
+              highligh "*Your code*" - you get a highlighted code **********
+              time Region/City - you get a real time in this city '''
+
+ARG_HELP_PARAM = 'the argument of function ("Your text"), "*Your code*" etc.'
+
+
+
+def main():
+  parser = argparse.ArgumentParser(description='Ultra super useful script')
+  parser.add_argument('function',  help=ARG_HELP_FUNC)
+  parser.add_argument('param_of_func', help=ARG_HELP_PARAM)
+  args = parser.parse_args()
+
+  # if args.function == 'cowsay':
+  #   cowsay(args.param_of_func)
+  # if args.function == 'highligh':
+  #   highligh(args.param_of_func)
+  # if args.function == 'time':
+  #   time(args.param_of_func)
+  FOO.get(args.function)(args.param_of_func)
+
+def cowsay(param):
+  from cowpy import cow
+
+  msg = cow.milk_random_cow(param)
+  print(msg)
+
+
+def highligh(param):
+  from pygments import highlight
+  from pygments.lexers import PythonLexer
+  from pygments.formatters import TerminalFormatter
+
+  lexer = PythonLexer()
+  formatter = TerminalFormatter(linenos = True)
+  print(highlight(param, lexer, formatter)) 
+  
+
+def time(param):
+  from datetime import datetime
+  from pytz import timezone
+
+  dt_format = "%d-%m-%Y %H:%M:%S"
+  timedate = datetime.now(timezone(param))
+  print('Дата и время выбранной зоны: \n', timedate.strftime(dt_format))
+
+
+FOO = {
+    'cowsay':  cowsay,
+    'highligh':  highligh,
+    'time':  time, 
+  }
\ No newline at end of file
diff --git a/homeworks/Simon Kozhin/hw6/my-awesome-script/poetry.lock b/homeworks/Simon Kozhin/hw6/my-awesome-script/poetry.lock
new file mode 100644
index 0000000..dfc8230
--- /dev/null
+++ b/homeworks/Simon Kozhin/hw6/my-awesome-script/poetry.lock	
@@ -0,0 +1,324 @@
+[[package]]
+name = "argparse"
+version = "1.4.0"
+description = "Python command-line parsing library"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "certifi"
+version = "2022.9.24"
+description = "Python package for providing Mozilla's CA Bundle."
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[[package]]
+name = "charset-normalizer"
+version = "2.1.1"
+description = "The Real First Universal Charset Detector. Open, modern and actively maintained alternative to Chardet."
+category = "dev"
+optional = false
+python-versions = ">=3.6.0"
+
+[package.extras]
+unicode-backport = ["unicodedata2"]
+
+[[package]]
+name = "click"
+version = "8.1.3"
+description = "Composable command line interface toolkit"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
+[package.dependencies]
+colorama = {version = "*", markers = "platform_system == \"Windows\""}
+
+[[package]]
+name = "colorama"
+version = "0.4.5"
+description = "Cross-platform colored terminal text."
+category = "dev"
+optional = false
+python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+
+[[package]]
+name = "cowpy"
+version = "1.1.5"
+description = ""
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[[package]]
+name = "dparse"
+version = "0.6.2"
+description = "A parser for Python dependency files"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[package.dependencies]
+packaging = "*"
+toml = "*"
+
+[package.extras]
+conda = ["pyyaml"]
+pipenv = ["pipenv"]
+
+[[package]]
+name = "idna"
+version = "3.4"
+description = "Internationalized Domain Names in Applications (IDNA)"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
+name = "packaging"
+version = "21.3"
+description = "Core utilities for Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.6"
+
+[package.dependencies]
+pyparsing = ">=2.0.2,<3.0.5 || >3.0.5"
+
+[[package]]
+name = "pygments"
+version = "2.13.0"
+description = "Pygments is a syntax highlighting package written in Python."
+category = "main"
+optional = false
+python-versions = ">=3.6"
+
+[package.extras]
+plugins = ["importlib-metadata"]
+
+[[package]]
+name = "pyparsing"
+version = "3.0.9"
+description = "pyparsing module - Classes and methods to define and execute parsing grammars"
+category = "dev"
+optional = false
+python-versions = ">=3.6.8"
+
+[package.extras]
+diagrams = ["jinja2", "railroad-diagrams"]
+
+[[package]]
+name = "pytz"
+version = "2022.4"
+description = "World timezone definitions, modern and historical"
+category = "main"
+optional = false
+python-versions = "*"
+
+[[package]]
+name = "requests"
+version = "2.28.1"
+description = "Python HTTP for Humans."
+category = "dev"
+optional = false
+python-versions = ">=3.7, <4"
+
+[package.dependencies]
+certifi = ">=2017.4.17"
+charset-normalizer = ">=2,<3"
+idna = ">=2.5,<4"
+urllib3 = ">=1.21.1,<1.27"
+
+[package.extras]
+socks = ["PySocks (>=1.5.6,!=1.5.7)"]
+use-chardet-on-py3 = ["chardet (>=3.0.2,<6)"]
+
+[[package]]
+name = "ruamel-yaml"
+version = "0.17.21"
+description = "ruamel.yaml is a YAML parser/emitter that supports roundtrip preservation of comments, seq/map flow style, and map key order"
+category = "dev"
+optional = false
+python-versions = ">=3"
+
+[package.dependencies]
+"ruamel.yaml.clib" = {version = ">=0.2.6", markers = "platform_python_implementation == \"CPython\" and python_version < \"3.11\""}
+
+[package.extras]
+docs = ["ryd"]
+jinja2 = ["ruamel.yaml.jinja2 (>=0.2)"]
+
+[[package]]
+name = "ruamel-yaml-clib"
+version = "0.2.6"
+description = "C version of reader, parser and emitter for ruamel.yaml derived from libyaml"
+category = "dev"
+optional = false
+python-versions = ">=3.5"
+
+[[package]]
+name = "safety"
+version = "2.3.1"
+description = "Checks installed dependencies for known vulnerabilities and licenses."
+category = "dev"
+optional = false
+python-versions = "*"
+
+[package.dependencies]
+Click = ">=8.0.2"
+dparse = ">=0.6.2"
+packaging = ">=21.0"
+requests = "*"
+"ruamel.yaml" = ">=0.17.21"
+setuptools = ">=19.3"
+
+[package.extras]
+github = ["jinja2 (>=3.1.0)", "pygithub (>=1.43.3)"]
+gitlab = ["python-gitlab (>=1.3.0)"]
+
+[[package]]
+name = "setuptools"
+version = "65.5.0"
+description = "Easily download, build, install, upgrade, and uninstall Python packages"
+category = "dev"
+optional = false
+python-versions = ">=3.7"
+
+[package.extras]
+docs = ["furo", "jaraco.packaging (>=9)", "jaraco.tidelift (>=1.4)", "pygments-github-lexers (==0.0.5)", "rst.linker (>=1.9)", "sphinx (>=3.5)", "sphinx-favicon", "sphinx-hoverxref (<2)", "sphinx-inline-tabs", "sphinx-notfound-page (==0.8.3)", "sphinx-reredirects", "sphinxcontrib-towncrier"]
+testing = ["build[virtualenv]", "filelock (>=3.4.0)", "flake8 (<5)", "flake8-2020", "ini2toml[lite] (>=0.9)", "jaraco.envs (>=2.2)", "jaraco.path (>=3.2.0)", "mock", "pip (>=19.1)", "pip-run (>=8.8)", "pytest (>=6)", "pytest-black (>=0.3.7)", "pytest-checkdocs (>=2.4)", "pytest-cov", "pytest-enabler (>=1.3)", "pytest-flake8", "pytest-mypy (>=0.9.1)", "pytest-perf", "pytest-xdist", "tomli-w (>=1.0.0)", "virtualenv (>=13.0.0)", "wheel"]
+testing-integration = ["build[virtualenv]", "filelock (>=3.4.0)", "jaraco.envs (>=2.2)", "jaraco.path (>=3.2.0)", "pytest", "pytest-enabler", "pytest-xdist", "tomli", "virtualenv (>=13.0.0)", "wheel"]
+
+[[package]]
+name = "toml"
+version = "0.10.2"
+description = "Python Library for Tom's Obvious, Minimal Language"
+category = "dev"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+
+[[package]]
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+version = "1.26.12"
+description = "HTTP library with thread-safe connection pooling, file post, and more."
+category = "dev"
+optional = false
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+
+[package.extras]
+brotli = ["brotli (>=1.0.9)", "brotlicffi (>=0.8.0)", "brotlipy (>=0.6.0)"]
+secure = ["certifi", "cryptography (>=1.3.4)", "idna (>=2.0.0)", "ipaddress", "pyOpenSSL (>=0.14)", "urllib3-secure-extra"]
+socks = ["PySocks (>=1.5.6,!=1.5.7,<2.0)"]
+
+[metadata]
+lock-version = "1.1"
+python-versions = "^3.8"
+content-hash = "d49c83882176b27b71570247fddbb7d89f3ebc338020380174c89e8dc1865fe3"
+
+[metadata.files]
+argparse = [
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+    {file = "argparse-1.4.0.tar.gz", hash = "sha256:62b089a55be1d8949cd2bc7e0df0bddb9e028faefc8c32038cc84862aefdd6e4"},
+]
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+]
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+]
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+]
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diff --git a/homeworks/Simon Kozhin/hw6/my-awesome-script/pyproject.toml b/homeworks/Simon Kozhin/hw6/my-awesome-script/pyproject.toml
new file mode 100644
index 0000000..78ea5b8
--- /dev/null
+++ b/homeworks/Simon Kozhin/hw6/my-awesome-script/pyproject.toml	
@@ -0,0 +1,25 @@
+[tool.poetry]
+name = "my-awesome-script"
+version = "0.1.0"
+description = ""
+authors = ["CLleese <simeon.kozhin@gmail.com>"]
+readme = "README.md"
+packages = [{include = "my_awesome_script"}]
+
+[tool.poetry.dependencies]
+python = "^3.8"
+pygments = "^2.13.0"
+cowpy = "^1.1.5"
+pytz = "^2022.4"
+argparse = "^1.4.0"
+
+
+[tool.poetry.group.dev.dependencies]
+safety = "^2.3.1"
+
+[tool.poetry.scripts]
+my-awesome-script = "my_awesome_script.my_awesome_script:main"
+
+[build-system]
+requires = ["poetry-core"]
+build-backend = "poetry.core.masonry.api"
diff --git a/homeworks/Simon Kozhin/hw6/my-awesome-script/tests/__init__.py b/homeworks/Simon Kozhin/hw6/my-awesome-script/tests/__init__.py
new file mode 100644
index 0000000..e69de29