MerleLiuKun

from django.db import models


class AbstractTimeModel(models.Model):
    """
    Simple abstract base class.
    provide the general created time, update time fields.
    可以将 公用的字段抽取出来.
    """
    created_at = models.DateTimeField(

MerleLiuKun

def md5_for_file(path):
    path = path.encode('utf-8')
    md = hashlib.md5()
    block_size = 128 * md.block_size
    with open(path, 'rb') as f:
        for chunk in iter(lambda: f.read(block_size), b''):
            md.update(chunk)
    return md.hexdigest()

MerleLiuKun

class BasicModel(db.Model):
    __abstract__ = True

    created_at = db.Column(db.DateTime, default=db.func.now())
    updated_at = db.Column(db.DateTime, default=db.func.now(), onupdate=db.func.now())


class User(BasicModel):
    __tablename__ = 'users'
    id = db.Column(db.Integer, primary_key=True, autoincrement=True)

MerleLiuKun

# coding=utf-8

from app.ext.token_gainer import twitter_api
from TwitterAPI.TwitterError import TwitterConnectionError, TwitterRequestError


def call_request(url, params, retries=3, api=None):
    """
    :param url: twitter api
    :param params: api param conmmon dict(t) 

MerleLiuKun

import cv2

video_url = 'https://scontent.xx.fbcdn.net/v/t50.2886-16/39483744_2088298591194407_5257741205319450624_n.mp4?_nc_cat=109&oh=807b4ef98367893cacb969323f47048b&oe=5C4D7231'
vidcap = cv2.VideoCapture(video_url)
vidcap.set(cv2.CAP_PROP_POS_MSEC, 1000)
success, image = vidcap.read()

if success:
    cv2.imwrite('frame.jpg', image)

MerleLiuKun

"""
   pip  install PyMuPDF==1.14.3
"""
import fitz


def convert_pdf_to_png(filename):
    doc = fitz.open(filename=filename)
    for pg in range(doc.pageCount):

MerleLiuKun

# coding=utf-8 

CONSTANT_BEGIN = 201416920417
CONSTANT_CHAR = 'JTXD9hz6SBqpINCrx5Memk1LO2ylcPYjFnwbd4tv3VW0aiRK8oGE7fuQgsAUHZ'
CONSTANT_LENGTH = len(CONSTANT_CHAR)

def encode_b64(num):
    if not isinstance(num, (int, long)):
        raise TypeError('Must int num')
    if num <= 0:

MerleLiuKun

# add remote upstream source
git remote add upstream https://github.com/encode/requests-async.git

# check the remote status
git remote -v

# fetch the upstream lastest update
git fetch upstream

# change current branch to master

MerleLiuKun

filename = './xxx.pdf'
with open(GUIDO, 'rb') as g_f:
    guido = MIMEApplication(g_f.read(), _subtype='pdf')
    guido.add_header('Content-Disposition', 'attachment', filename=filename)
    msg.attach(guido)
    

MerleLiuKun

# run a simple mongo server
docker run --rm --name mymongo -p 27017:27017 -d mongo

# run mongo web 
docker run --rm --name mymongo-express --link mymongo:mongo -p 8081:8081 -d mongo-express