Python standard library zipfile compresses files/folders

Likianta我 2022-09-09 01:23:50 阅读数:43

pythonstandardlibraryzipfilecompresses

压缩单个文件

from zipfile import ZipFile
with ZipFile('output.zip', 'w') as z:
z.write('input.txt')

压缩多个文件

要求:

  • After compressing multiple files, 处于同一目录下 (也就是 zip 文件中, Subdirectory structure is not included)
  • These source files may come from different directories
from os.path import basename
from zipfile import ZipFile
def zip_files(*files):
with ZipFile('output.zip', 'w') as z:
for f in files:
z.write(f, arcname=basename(f))

Compress a single directory

讲解:

When compressing a single directory, ZipFile 需要 write 目录, and every file in the directory (Include files in subfolders) 的路径.

These paths are in zip There is a common prefix in the file, That is, the directory name of the root directory, 如下所示:

output.zip
|= root # This is the public prefix
|- aaa.txt
|- bbb.txt
|= ccc
|- ddd.txt
import os
import os.path
from zipfile import ZipFile
def zip_dir(dir_):
with ZipFile('output.zip', 'w') as z:
z.write(dir_, arcname=(dn := os.path.basename(dir_)))
for root, dirs, files in os.walk(dir_):
for fn in files:
z.write(
fp := os.path.join(root, fn),
arcname=dn + '/' + os.path.relpath(fp, dir_)
# ^^^^^^^^^^ 特别注意这里.
)

Compress multiple directories

要求:

  • Take their common path part as a prefix. 例如:

    输入:

    c:
    |= aaa
    |= mmm
    |- foo.txt
    |= nnn
    |- bar.txt
    

    输出:

    result.zip
    |= mmm
    |- foo.txt
    |= nnn
    |- bar.txt
    
import os
import os.path
from zipfile import ZipFile
def zip_dirs(*dirs):
prefix = os.path.commonprefix(dirs)
with ZipFile('output.zip', 'w') as z:
for d in dirs:
z.write(d, arcname=os.path.relpath(d, prefix))
for root, dirs, files in os.walk(d):
for fn in files:
z.write(
fp := os.path.join(root, fn),
arcname=os.path.relpath(fp, prefix)
)

脚本

I combined the above snippets into one script, 名称为 “ziputil.py”, 代码如下:

import os
import os.path
from zipfile import ZipFile
def zip_file(file_i: str, file_o: str) -> None:
with ZipFile(file_o, 'w') as z:
z.write(file_i, arcname=(n := os.path.basename(file_i)))
print('zip_file:', n)
def zip_files(*files_i: str, file_o: str) -> None:
with ZipFile(file_o, 'w') as z:
for f in files_i:
z.write(f, arcname=(n := os.path.basename(f)))
print('zip_files:', n)
def zip_dir(dir_i: str, file_o: str) -> None:
dir_i_parent = os.path.dirname(dir_i)
with ZipFile(file_o, 'w') as z:
z.write(dir_i, arcname=(n := os.path.basename(dir_i)))
print('zip_dir:', n)
for root, dirs, files in os.walk(dir_i):
for fn in files:
z.write(
fp := os.path.join(root, fn),
arcname=(n := os.path.relpath(fp, dir_i_parent)),
)
print('zip_dir:', n)
def zip_dirs(*dirs_i: str, file_o: str) -> None:
prefix = os.path.commonprefix(dirs_i)
with ZipFile(file_o, 'w') as z:
for d in dirs_i:
z.write(d, arcname=(n := os.path.relpath(d, prefix)))
print('zip_dirs:', n)
for root, dirs, files in os.walk(d):
for fn in files:
z.write(
fp := os.path.join(root, fn),
arcname=(n := os.path.relpath(fp, prefix)),
)
print('zip_dirs:', n)

实战 (截图)

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