Python File Reading in Chunks: Complete Guide

You can chunk read a file in Python using the following methods:

1. unlocked
2. Get the size of something by reading it.
3. Process or save the read data blocks in a loop.
4. terminate()

Here is an example code that demonstrates how to read a file in chunks and write the data to a new file:

chunk_size = 1024  # 指定数据块的大小

with open('input_file.txt', 'rb') as input_file, open('output_file.txt', 'wb') as output_file:
    while True:
        data = input_file.read(chunk_size)  # 读取数据块
        if not data:
            break  # 如果没有数据了，结束循环
        output_file.write(data)  # 写入数据块到输出文件

print("文件分块读取完成")

In the code above, we open an input file input_file.txt and an output file output_file.txt. Then, within a loop, we use the read() method to read data chunks and write them to the output file. Finally, we close the file objects and print a message.