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

# 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

import math
import typing
import hashlib

from dataclasses import dataclass, field
from pathlib import Path


@dataclass(order=True)
class ReferenceGenome: