我有一个带有一些软件版本的树,我需要保留最后3个版本。
我有这样的树文件夹:
版本:
文件夹:
' 10.7.0.290',' 10.7.0.289',' 10.7.0.281',' 10.7.0.278& #39;,' 10.7.0.275'
' 10.6.7.282',' 10.6.7.277',' 10.6.7.274',' 10.6.7.270& #39;
我想保留每个版本的最后3个文件夹,例如在这种情况下,我希望保留&strong;#10; 10.7.0.yyy&的最后3 #39;和' 10.6.7.xxx版本':
' 10.7.0.290',' 10.7.0.289',' 10.7.0.281'
' 10.6.7.282',' 10.6.7.277',' 10.6.7.274'
并删除此内容:
' 10.7.0.278',' 10.7.0.275'
' 10.6.7.270'
但是我的脚本只保留每个版本的最后3个而不是:
脚本:
import os
import re
import shutil
versions = []
folders = []
a = os.listdir('.')
a.sort(reverse=True)
sorted(a)
for fn in a:
folders.append(fn)
if os.path.isdir(fn):
version = (re.match('^([0-9]+\.[0-9]+\.[0-9]+).*', fn)).group(1)
if (version) not in versions:
versions.append(version)
result = []
for version in versions:
temp = []
for folder in folders:
if folder.startswith(version):
temp.append(folder)
result.append(temp)
print result
for version in result:
for i in range(max(len(version) - 3, 0)):
print version[i]
# shutil.rmtree(version[i])
结果
10.7.0.290 #this files are deleted
10.7.0.289 #this files are deleted
10.6.7.282 #this files are deleted
答案 0 :(得分:1)
让我们指出所需的步骤。
os.listdir
获取给定路径中所有目录的列表。shutil.rmtree
在循环内删除它们。所以,解决方案应该是:
from os import listdir
import shutil
directories_to_delete = sorted(listdir('desired/path'))[:3]
for directory in directories_to_delete:
shutil.rmtree(directory)
答案 1 :(得分:1)
您可以将文件夹名称转换为int
的列表。这样可以正确排序版本,以便10
被认为晚于9
。然后,您可以按相反顺序对它们进行排序,并使用groupby
根据3个第一个组件对它们进行分组。然后,对于每个组,您可以使用dropwhile
丢弃前3个项目并删除其余项目:
from itertools import groupby, dropwhile
FOLDERS = [
'10.7.0.290', '10.7.0.289', '10.7.0.281', '10.7.0.278', '10.7.0.275',
'10.6.7.282', '10.6.7.277', '10.6.7.274', '10.6.7.270'
]
components = ([int(x) for x in fn.split('.')] for fn in FOLDERS)
for _, g in groupby(sorted(components, reverse=True), key=lambda x: x[:3]):
for _, fn in dropwhile(lambda x: x[0] < 3, enumerate(g)):
print 'Remove {}'.format('.'.join(str(x) for x in fn))
输出:
Remove 10.7.0.278
Remove 10.7.0.275
Remove 10.6.7.270
答案 2 :(得分:0)
这样的事情会起作用:
import os
import shutil
from collections import defaultdict
versions = defaultdict(list)
directories = next(os.walk('.'))[1]
for directory in directories:
major, minor, patch, minor_patch = directory.split('.')
versions['{}.{}.{}'.format(major, minor, patch)].append(int(minor_patch))
for version, minor_patches in versions.items():
minor_patches.sort(reverse=True)
to_remove = minor_patches[3:]
for minor_patch in to_remove:
path = '{}.{}'.format(version, minor_patch)
shutil.rmtree('./{}'.format(path))
示例:
[$:/tmp/folders] $ tree
.
├── 10.6.7.270
├── 10.6.7.274
├── 10.6.7.277
├── 10.6.7.282
├── 10.7.0.275
├── 10.7.0.278
├── 10.7.0.281
├── 10.7.0.289
├── 10.7.0.290
└── folders.py
9 directories, 1 file
[$:/tmp/folders] $ python folders.py
[$:/tmp/folders] $ tree
.
├── 10.6.7.274
├── 10.6.7.277
├── 10.6.7.282
├── 10.7.0.281
├── 10.7.0.289
├── 10.7.0.290
└── folders.py
6 directories, 1 file