lesson 19.py

lesson 19.py

# map
import operator
from functools import reduce

item = [1, 2, 3, 4]
squared = []
for i in item:
    squared.append(i ** 2)


def square_func(i):
    return i ** 2


# print(sum([1, 2, 3, 4]))
# print(list(map(operator.add, [1, 2, 3, 4], [1, 2, 3, 4])))
# result = list(map(square_func, item))
# print(result)

def x_plus_y(x, y):
    return x + y


volume = reduce(
    lambda x, y: x + y,
    [1, 2, 3, 4]
)

# print(volume)
# print(f"{volume} - sum of digints")
# print("{volume} - sum of digints".format(volume=volume))
#


areas = [3.123456, 3.123456, 3.123456, 3.123456, 3.123456, 3.123456]

# result = list(map(round, areas, range(1, 5)))
# print(result)

# CRUD
# create, read, update, delete

# zip

first_string = ['a', 'b', 'c', 'd']
second_string = [1, 2, 3]

zip_value = list(zip(first_string, second_string))


# print(zip_value)

# print(list(map(lambda x, y: (x, y), first_string, second_string)))


def bread(func):
    def wrapper():
        print("BREAD")
        func()
        print("BREAD")

    return wrapper


def vegetables(func):
    def wrapper():
        print("SALAD")
        func()
        print("TOMATO")

    return wrapper


@bread
@vegetables
def sandwich(food='cheese'):
    print(food)


# sandwich = bread(vegetables(sandwich))
# sandwich()


class MyCustomError(Exception):

    def __init__(self, message):
        self.message = message

    def __str__(self):
        return self.message


print(MyCustomError("MY ERROR TEXT"))


def error_catcher(error=None):
    def decorator(func):
        def wrapper(*args, **kwargs):
            try:
                func(*args, **kwargs)
            except error as e:
                with open('errors.txt', 'a') as file:
                    file.write(
                        f"While running {func.__name__} with arg {args} kwargs {kwargs}"
                        f"got an error {e}\n"
                    )
        return wrapper
    return decorator


@error_catcher(error=ZeroDivisionError)
def zero():
    1/0

# zero()


@error_catcher(error=ValueError)
def converter(type_to_convert=int, value=None):
    return type_to_convert(value)


converter(value='abc')