如果要读取一个文件里的内容是

# 文件名：db.txt
1
2
3
4

代码如下

import requests f = open("db.txt", mode="rb")
content = f.read()
f.close()data = content.decode('utf-8')# 存到 list 里
data_list = data.split('\r\n')
print(data_list)# 结果如下
# ['1', '2', '3', '4']

也可以这么写

import requestsf = open("db.txt", mode="r", encoding="utf-8")
content = f.read()
f.close()data_lst = content.split(',')
print(data_lst)# 结果如下
['1', ' 2', ' 3', ' 4']

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如果读取的文档是文本，就用

f = open("文件路径", mode='r', encoding='utf-8')
content = f.read()
f.close()

如果要读取 图片/视频/gif 文件，就用

f = open("文件路径”，mode="rb')
data = f.read()
f.close()

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如果要读取大文件，比如100G。代码例子如下

import requestsf = open("db.txt", mode="r", encoding="utf-8")for line in f:line = line.strip()if not line:continue print(line)f.close()

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如果要下载mp3文件，大小1000G，代码例子如下

import os # 文件总大小
totalSize = os.stat("db.txt").st_sizef = open("db.txt", mode='rb')
hasReadSize = 0
while hasReadSize <= totalSize:part = f.read(4) # 读4个字节hasReadSize += len(part)f.close()

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使用 with 来打开文件

with open("db.txt", mode="r", encoding="utf-8") as f:content = f.read()print(content)# with 是为了防止忘记写 f.close()

上面的对应下面

f = open("db.txt", mode="r", encoding="utf-8")
content = f.read()
f.close()
print(content)

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