详解在python中如何使用zlib模块进行数据压缩和解压缩

import zlib
# 要压缩的数据
data = b"This is some data that we're going to compress"
# 使用 zlib.compress() 压缩数据
compressed_data = zlib.compress(data)
print(f"Compressed data: {compressed_data}")
# 使用 zlib.decompress() 解压数据
decompressed_data = zlib.decompress(compressed_data)
print(f"Decompressed data: {decompressed_data}")

import zlib
# 要压缩的数据
data = b"This is some data that we're going to compress"
for i in range(1, 10):
    compressed_data = zlib.compress(data, i)
    print(f"Compression level: {i}, size of compressed data: {len(compressed_data)}")

import zlib
# 无效的压缩数据
invalid_compressed_data = b"This is not valid compressed data"
try:
    decompressed_data = zlib.decompress(invalid_compressed_data)
except zlib.error:
    print("Invalid compressed data")

import gzip
# 创建一个新的 gzip 文件，并写入数据
with gzip.open('file.txt.gz', 'wb') as f:
    f.write(b"This is some data that we're going to compress")
# 读取 gzip 文件中的数据
with gzip.open('file.txt.gz', 'rb') as f:
    file_content = f.read()
print(f"File content: {file_content}")

import zlib
# 创建一个压缩对象
compressor = zlib.compressobj()
# 分块压缩数据
compressed_chunks = []
for i in range(0, len(data), 10):
    compressed_chunks.append(compressor.compress(data[i:i+10]))
compressed_chunks.append(compressor.flush())
# 创建一个解压对象
decompressor = zlib.decompressobj()
# 分块解压数据
decompressed_chunks = []
for chunk in compressed_chunks:
    decompressed_chunks.append(decompressor.decompress(chunk))
decompressed_chunks.append(decompressor.flush())
# 验证解压后的数据是否和原始数据一致
assert b"".join(decompressed_chunks) == data