Python，在内存中写入zip到文件

Question

如何将内存中的压缩文件写入文件？

# Create in memory zip and add files
zf = zipfile.ZipFile(StringIO.StringIO(), mode='w',compression=zipfile.ZIP_DEFLATED)
zf.writestr('file1.txt', "hi")
zf.writestr('file2.txt', "hi")

# Need to write it out
f = file("C:/path/my_zip.zip", "w")
f.write(zf)  # what to do here? Also tried f.write(zf.read())

f.close()
zf.close()

Answer 1

StringIO.getvalue StringIO 的返回内容:

>>> import StringIO
>>> f = StringIO.StringIO()
>>> f.write('asdf')
>>> f.getvalue()
'asdf'

或者，您可以使用 seek 更改文件的位置:

>>> f.read()
''
>>> f.seek(0)
>>> f.read()
'asdf'

尝试以下操作:

mf = StringIO.StringIO()
with zipfile.ZipFile(mf, mode='w', compression=zipfile.ZIP_DEFLATED) as zf:
    zf.writestr('file1.txt', "hi")
    zf.writestr('file2.txt', "hi")

with open("C:/path/my_zip.zip", "wb") as f: # use `wb` mode
    f.write(mf.getvalue())

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