ricky-lim

import math
import typing
import hashlib

from dataclasses import dataclass, field
from pathlib import Path


@dataclass(order=True)
class ReferenceGenome:

ricky-lim

# From the book, effective python 2nd edition item 37

from collections import defaultdict
from dataclasses import dataclass, field
from typing import List, Dict


@dataclass
class Grade:
    weight: int

ricky-lim

Example to drop a column title in a posts table:

# Generate by Alembic
def downgrade():
    # ### commands auto generated by Alembic - please adjust! ###
    op.drop_index(op.f('ix_posts_title'), table_name='posts')
    op.drop_column('posts', 'title')
    
$ flask db downgrade
....

ricky-lim

pipx install tubex

tubex --outdir foo download-mp4 https://www.youtube.com/watch?v=LABGimhsEys

ricky-lim

import sqlalchemy
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import Column, Integer, String, ForeignKey
from sqlalchemy.orm import sessionmaker, relationship, backref

engine = sqlalchemy.create_engine('sqlite:///tmp.db')
Base = declarative_base()


class Answer(Base):

ricky-lim

import ipyvuetify as v
import traitlets
import json

class MyForm(v.VuetifyTemplate):
    email = traitlets.Unicode('').tag(sync=True)
    password = traitlets.Unicode('').tag(sync=True)
    isValid = traitlets.Bool(False).tag(sync=True)
    result = traitlets.Dict({}).tag(sync=True)
    template = traitlets.Unicode('''

ricky-lim

import pytest
from sqlalchemy import (
    create_engine,
    Column,
    Integer,
    String,
    Table,
    ForeignKey,
    PrimaryKeyConstraint,
)

ricky-lim

#!/usr/bin/env python
import math


def generate_bins(size: int, count: int):
    """
    >>> list(generate_bins(size=100, count=300))
    [100, 100, 100]
    >>> list(generate_bins(size=100, count=301))
    [100, 100, 100, 1]

ricky-lim

# Create config file
$ ipython profile create
$ vim <ipython_config_file>
c.InteractiveShellApp.extensions = ['autoreload']
.InteractiveShellApp.exec_lines = ['%autoreload 2']

ricky-lim

import java.util.stream.IntStream;

class Scratch {
    public static boolean palindromeChecker(String s) {
        String normalizedString = s.trim().toLowerCase();

        return IntStream.range(0, normalizedString.length() / 2)
                .allMatch(i ->
                        normalizedString.charAt(i) ==
                                normalizedString.charAt(normalizedString.length() - i - 1));