[英]How to compress a processed text file in Python?
I have a text file which I constantly append data to. 我有一个文本文件,我不断将数据附加到该文件。 When processing is done I need to gzip the file.
处理完成后,我需要gzip文件。 I tried several options like
shutil.make_archive
, tarfile
, gzip
but could not eventually do it. 我尝试了几个选项,如
shutil.make_archive
, tarfile
, gzip
但最终无法做到。 Is there no simple way to compress a file without actually writing to it? 没有实际写入文件的简单方法来压缩文件吗?
Let's say I have mydata.txt file and I want it to be gzipped and saved as mydata.txt.gz . 假设我有mydata.txt文件,我希望将其压缩并另存为mydata.txt.gz 。
I don't see the problem. 我没看到问题。 You should be able to use eg the gzip module just fine, something like this:
您应该可以使用gzip模块 ,例如:
inf = open("mydata.txt", "rb")
outf = gzip.open("file.txt.gz", "wb")
outf.write(inf.read())
outf.close()
inf.close()
There's no problem with the file being overwritten, the name given to gzip.open()
is completely independent of the name given to plain open()
. 覆盖文件没有问题,给
gzip.open()
的名称完全独立于给普通open()
的名称。
如果要压缩文件而不写入文件,则可以使用Python库subprocess
os.system
或popen
或os.system
运行shell命令,例如gzip
。
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