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with open rb as f用法

时间: 2023-10-22 14:03:06 浏览: 122

`with open('filename.txt', 'rb') as f`是一种文件操作的用法。其中`'filename.txt'`是要打开的文件名，`'rb'`是打开文件的模式。在这个例子中，`rb`表示以二进制格式打开一个文件用于只读。文件指针将会放在文件的开头。这种模式适用于读取二进制文件，如图片、音频等。在`with`语句块中，我们可以使用`f`来操作文件，读取或处理文件的内容。当`with`语句块结束时，文件会自动关闭，无需手动关闭文件。这种用法可以确保文件在使用完毕后被正确关闭，避免资源泄露和错误。123 #### 引用[.reference_title] - *1* *3* [with open() as f的用法/打开文件的方式--转载自“ckSpark”](https://blog.csdn.net/DocVenom/article/details/121860209)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"] - *2* [文件操作 with open xxx as f: 的用法](https://blog.csdn.net/zlllg/article/details/89315274)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"] [ .reference_list ]

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import time import pandas as pd import requests import re import os import streamlit as st from datetime import datetime from aip import AipImageClassify def get_file(filepath): with open(filepath, 'rb') as f: return f.read() 解释代码

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with open("data/ind.{}.{}".format(dataset_str, names[i]), 'rb') as f什么意思

with open(train_file, 'rb') as f: train_data = np.load(f, allow_pickle=True)['data'].tolist()这是什么意思并给出相应的示例

pythonwith open as读取文件

def __getitem__(self, index): path, target = self.imgs[index] with open(path, 'rb') as f: img = Image.open(f).convert('RGB') im_size = img.size img = self.resize(img)，这是什么意思啊

解析with open(IMAGE_FILEPATH, 'rb') as f: base64_data = base64.b64encode(f.read()) base64_str = base64_data.decode('UTF8')这段代码

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小栗子源码2.9.3版本发布

def getitem(self, index): path, target = self.imgs[index] with open(path, 'rb') as f: img = Image.open(f).convert('RGB') im_size = img.size img = self.resize(img)，这是什么意思啊