Python中使用gzip实现文件写入压缩与解压缩的完整示例代码

以下是Python中使用gzip实现文件写入压缩与解压缩的完整示例代码：

## 文件写入压缩

import gzip

def compress_file(file_path):
    with open(file_path, 'rb') as f_in:
        compressed_file_path = file_path + '.gz'
        with gzip.open(compressed_file_path, 'wb') as f_out:
            f_out.writelines(f_in)

    return compressed_file_path

file_path = 'example.txt'
compressed_file_path = compress_file(file_path)
print(f"Compressed file: {compressed_file_path}")

以上代码中，首先通过open()函数以读取二进制模式打开待压缩的文件，然后通过gzip.open()函数以写入二进制模式打开压缩后的文件。使用writelines()方法将待压缩文件的内容写入压缩文件。最后返回压缩后的文件路径。

## 文件解压缩

import gzip

def decompress_file(compressed_file_path):
    decompressed_file_path = compressed_file_path[:-3]  # Remove .gz extension

    with gzip.open(compressed_file_path, 'rb') as f_in:
        with open(decompressed_file_path, 'wb') as f_out:
            f_out.write(f_in.read())

    return decompressed_file_path

compressed_file_path = 'example.txt.gz'
decompressed_file_path = decompress_file(compressed_file_path)
print(f"Decompressed file: {decompressed_file_path}")

以上代码中，首先通过gzip.open()函数以读取二进制模式打开压缩文件，然后通过open()函数以写入二进制模式打开解压缩后的文件。使用read()方法从压缩文件中读取内容，并使用write()方法将解压缩后的内容写入文件。最后返回解压缩后的文件路径。

下面是一个完整的使用示例：

import gzip

def compress_file(file_path):
    with open(file_path, 'rb') as f_in:
        compressed_file_path = file_path + '.gz'
        with gzip.open(compressed_file_path, 'wb') as f_out:
            f_out.writelines(f_in)

    return compressed_file_path

def decompress_file(compressed_file_path):
    decompressed_file_path = compressed_file_path[:-3]  # Remove .gz extension

    with gzip.open(compressed_file_path, 'rb') as f_in:
        with open(decompressed_file_path, 'wb') as f_out:
            f_out.write(f_in.read())

    return decompressed_file_path

# 压缩示例
file_path = 'example.txt'
compressed_file_path = compress_file(file_path)
print(f"Compressed file: {compressed_file_path}")

# 解压缩示例
compressed_file_path = 'example.txt.gz'
decompressed_file_path = decompress_file(compressed_file_path)
print(f"Decompressed file: {decompressed_file_path}")

希望以上示例能够帮助到你！