Nodejs脚本fs.createReadStream文件到Python纸条

Question

我需要把一个文件转换成可读的流通过api上传，这里有一个node js示例，它使用fs.createReadStream文件。有人能告诉我python与上述语句的等价关系吗？你知道吗

示例

const axios = require('axios');
const fs = require('fs');
const FormData = require('form-data');

export const pinFileToIPFS = (pinataApiKey, pinataSecretApiKey) => {
    const url = `https://api.pinata.cloud/pinning/pinFileToIPFS`;

    //we gather a local file for this example, but any valid readStream source will work here.
    let data = new FormData();
    data.append('file', fs.createReadStream('./yourfile.png'));

我怎样才能复制以上的Python的方式？你知道吗