使用pymongo执行正则表达式查询 [英] Performing regex Queries with pymongo

问题描述

我正在尝试使用pymongo对mongodb服务器执行正则表达式查询.文件结构如下

I am trying to perform a regex query using pymongo against a mongodb server. The document structure is as follows

{
  "files": [
    "File 1",
    "File 2",
    "File 3",
    "File 4"
  ],
  "rootFolder": "/Location/Of/Files"
}

我想获取所有与* File模式匹配的文件.我尝试这样做

I want to get all the files that match the pattern *File. I tried doing this as such

db.collectionName.find({'files':'/^File/'})

但是我什么也没得到，我是否缺少任何东西，因为根据mongodb docs，这应该是可能的.如果我在mongo控制台中执行查询，则可以正常工作，这是否表示api不支持它，或者我只是使用不正确

Yet i get nothing back , am i missing something because according to the mongodb docs this should be possible. If I perform the query in the mongo console it works fine , does this mean the api doesnt support it or am I just using it incorrectly

推荐答案

事实证明，在pymongo中进行正则表达式搜索的方式略有不同，但同样简单.

Turns out regex searches are done a little differently in pymongo but is just as easy.

正则表达式如下:

db.collectionname.find({'files':{'$regex':'^File'}})

这将匹配所有具有files属性的文档，该文档中包含以File开头的项

This will match all documents that have a files property that has a item within that starts with File

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