seozed

db.getCollection("mastersportal_counrse").aggregate([
    
    {
        "$project": {
            "overview": {
                "$strLenCP": "$overview"
            },
            "about": {
                "$strLenCP": "$about"
            }

seozed

from ratelimit import limits, sleep_and_retry

import requests

FIFTEEN_MINUTES = 900

@sleep_and_retry
@limits(calls=15, period=FIFTEEN_MINUTES)
# 900秒内最多请求15次。
def call_api(url):

seozed

from pymongo import MongoClient

class MongoDBConnection(object):
    """MongoDB Connection"""
    def __init__(self, host='localhost', port=27017):
        self.host = host
        self.port = port
        self.connection = None
    def __enter__(self):
        self.connection = MongoClient(self.host, self.port)

seozed

import nltk
nltk.download('omw-1.4')
nltk.download('punkt')

from nltk.stem import PorterStemmer
from nltk.stem import LancasterStemmer
from nltk.stem import WordNetLemmatizer
wordnet_lemmatizer = WordNetLemmatizer()
import os