Biazus

#!/usr/bin/env python3

from abc import ABC, abstractmethod


class AbstractEdgeBuilder(ABC):

    @abstractmethod
    def build_edge(self):
        pass

Biazus

-- Get Max ID from table
SELECT MAX(id) FROM table;

-- Get Next ID from table
SELECT nextval('table_id_seq');

-- Set Next ID Value to MAX ID
SELECT setval('table_id_seq', (SELECT MAX(id) FROM table));

Biazus

CREATE TABLE customer (
  customer_id serial PRIMARY KEY,
  first_name VARCHAR ( 50 ) NOT NULL,
  last_name VARCHAR ( 50 ) NOT NULL,
  address VARCHAR ( 50 ) NOT NULL
)

INSERT INTO customer (first_name, last_name, address) values ('John', 'B', 'x Avenue');
INSERT INTO customer (first_name, last_name, address) values ('John', 'B', 'x Avenue');
INSERT INTO customer (first_name, last_name, address) values ('Maria', 'Pena', 'Cal St.');

Biazus

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.image as mpimg

img = mpimg.imread("D:\\Projetos\\Cinza\\teste.jpg")

gray = 0.299 * img[:, :, 0] + 0.587 * img[:, :,1] + 0.114 * img[:, :,2]
gray = gray.astype(np.uint8) # garantindo valores inteiros

limit = 127