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@gtmsingh
gtmsingh / boolparser.py
Last active May 16, 2020 05:17 — forked from leehsueh/boolparser.py
Python Boolean Expression Parser/Evaluator
"""
Grammer:
Expression --> AndTerm { OR AndTerm}+
AndTerm --> Condition { AND Condition}+
Condition --> Terminal (>,<,>=,<=,==) Terminal | (Expression)
Terminal --> Number or String or Variable
Usage:
from boolparser import *
@mjhea0
mjhea0 / audit_mixin.py
Created December 7, 2016 14:12 — forked from techniq/audit_mixin.py
Useful SQLAlchemy Mixins
from datetime import datetime
from sqlalchemy import Column, Integer, DateTime, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.ext.declarative import declared_attr
from flask_security import current_user
class AuditMixin(object):
created_at = Column(DateTime, default=datetime.now)
updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)
@alanhamlett
alanhamlett / api.py
Last active January 24, 2023 21:03
Serialize SQLAlchemy Model to dictionary (for JSON output) and update Model from dictionary attributes.
import uuid
import wtforms_json
from sqlalchemy import not_
from sqlalchemy.dialects.postgresql import UUID
from wtforms import Form
from wtforms.fields import FormField, FieldList
from wtforms.validators import Length
from flask import current_app as app
from flask import request, json, jsonify, abort
@techniq
techniq / audit_mixin.py
Created March 16, 2013 01:05
Useful SQLAlchemy Mixins
from datetime import datetime
from sqlalchemy import Column, Integer, DateTime, ForeignKey
from sqlalchemy.orm import relationship
from sqlalchemy.ext.declarative import declared_attr
from flask_security import current_user
class AuditMixin(object):
created_at = Column(DateTime, default=datetime.now)
updated_at = Column(DateTime, default=datetime.now, onupdate=datetime.now)