大家好，又见面了，我是你们的朋友全栈君。
bz2.compress/decompress使用二进制数据：>>> import bz2
>>> compressed = bz2.compress(b’test_string’)
>>> compressed
b’BZh91AY&SYJ|i\x05\x00\x00\x04\x83\x80\x00\x00\x82\xa1\x1c\x00 \x00″\x03h\x840″
P\xdf\x04\x99\xe2\xeeH\xa7\n\x12\tO\x8d \xa0′
>>> bz2.decompress(compressed)
b’test_string’
简而言之-您需要手动处理文件内容。如果您有非常大的文件，您应该使用bz2.BZ2Decompressor而不是bz2.decompress，因为后者要求您将整个文件存储在字节数组中。for filename in files:
filepath = os.path.join(dirpath, filename)
newfilepath = os.path.join(dirpath,filename + ‘.decompressed’)
with open(newfilepath, ‘wb’) as new_file, open(filepath, ‘rb’) as file:
decompressor = BZ2Decompressor()
for data in iter(lambda : file.read(100 * 1024), b”):
new_file.write(decompressor.decompress(data))
您还可以使用bz2.BZ2File来简化此过程：for filename in files:
filepath = os.path.join(dirpath, filename)
newfilepath = os.path.join(dirpath, filename + ‘.decompressed’)
with open(newfilepath, ‘wb’) as new_file, bz2.BZ2File(filepath, ‘rb’) as file:
for data in iter(lambda : file.read(100 * 1024), b”):
new_file.write(data)
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