scrapy运行过程中报错，ModuleNotFoundError: No module named 'pymongo'

Question

我直接运行单文件，并没有导入错误，此外，我单独在py文件中使用mongodb也正常，但是在scrapy项目中运行，会说导入失败，这是为什么？

import json
import pymongo
from scrapy.utils.project import get_project_settings


class MyscrapyPipeline(object):

    def __init__(self):
        settings = get_project_settings()
        client = pymongo.MongoClient(host=settings['MONGODB_HOST'], port=settings['MONGODB_PORT'])
        db = client[settings['MONGODB_DBNAME']]
        self.mongo = db[settings['MONGODB_COLNAME']['taptap']]

    def process_item(self, item, spider):
        """ 处理数据 """

        for k, v in item.items():
            item[k] = ''.join(v.split()) if bool(type(v) is not list) else v

        self.mongo.insert_one(json.dumps(dict(item), ensure_ascii=False))

        return item