按降序对结果排序（反向字母顺序） 按降序对结果排序（反向字母顺序） import pymongo   myclient = pymongo . MongoClient ( "mongodb://localhost:27017/" ) mydb = myclient [ "mydatabase" ] mycol = mydb [ ...

插入集合 插入集合 import pymongo   myclient = pymongo . MongoClient ( 'mongodb://localhost:27017/' ) mydb = myclient [ 'mydatabase' ] mycol = mydb [ "customers" ]   mydict...

查找集合中的所有文档 查找集合中的所有文档 import pymongo   myclient = pymongo . MongoClient ( "mongodb://localhost:27017/" ) mydb = myclient [ "mydatabase" ] mycol = mydb [ "customers" ...

检查集合是否存在 检查集合是否存在 import pymongo   myclient = pymongo . MongoClient ( 'mongodb://localhost:27017/' )   mydb = myclient [ 'mydatabase' ]   mycol = mydb [ "customers...

删除集合 删除集合 import pymongo   myclient = pymongo . MongoClient ( "mongodb://localhost:27017/" ) mydb = myclient [ "mydatabase" ] mycol = mydb [ "customers" ]   mycol ...

查找集合中的首个文档 查找集合中的首个文档 import pymongo   myclient = pymongo . MongoClient ( "mongodb://localhost:27017/" ) mydb = myclient [ "mydatabase" ] mycol = mydb [ "customers" ...

创建数据库 创建数据库 import pymongo   myclient = pymongo . MongoClient ( 'mongodb://localhost:27017/' )   mydb = myclient [ 'mydatabase' ]   # database created!

插入多个文档 插入多个文档 import pymongo   myclient = pymongo . MongoClient ( "mongodb://localhost:27017/" ) mydb = myclient [ "mydatabase" ] mycol = mydb [ "customers" ]   my...

检查数据库是否存在 检查数据库是否存在 import pymongo   myclient = pymongo . MongoClient ( 'mongodb://localhost:27017/' )   print ( myclient . list_database_names ())

通过正则表达式来过滤 通过正则表达式来过滤 import pymongo   myclient = pymongo . MongoClient ( "mongodb://localhost:27017/" ) mydb = myclient [ "mydatabase" ] mycol = mydb [ "customers" ...