我是初学者。我想编写一个脚本来从其文件夹中清理旧的 Google Chrome 应用程序版本，我想知道如何以有效的方式“排序”应用程序版本号。最好的方法是什么？
这是我的“春季大扫除”脚本：
import os
import sys
import re
import operator
import shutil
GOOGLE_CHROME_APPLICATION_VERSIONS_DIRECTORY=r'C:\Documents and Settings\Administrator\Local Settings\Application Data\Google\Chrome\Application'
REGEX_GOOGLE_CHROME_APPLICATION_VERSION = '^(\d+)\.(\d+)\.(\d+)\.(\d+)$'
def sorted_by_version_number(versions_list):
version_elements = len(versions_list[0])
for index in range(version_elements-1, 0, -1):
key = operator.itemgetter(index)
versions_list.sort(key=key, reverse = True)
return versions_list
def delete_old_google_chrome_versions():
REGEX = re.compile(REGEX_GOOGLE_CHROME_APPLICATION_VERSION)
application_versions = []
for filename in os.listdir(GOOGLE_CHROME_APPLICATION_VERSIONS_DIRECTORY):
filepath = os.path.join(GOOGLE_CHROME_APPLICATION_VERSIONS_DIRECTORY,
filename)
if os.path.isdir(filepath):
match = REGEX.match(filename)
if match:
version = (v1, v2, v3, v4) = [int(match.group(i)) for i in range(1, 5)]
application_versions.append(version)
versions_to_delete = sorted_by_version_number(application_versions)[1:]
for application_version in versions_to_delete:
directory_name = '.'.join([str(v) for v in application_version])
directory_path = os.path.join(GOOGLE_CHROME_APPLICATION_VERSIONS_DIRECTORY,
directory_name)
print('Deleting Google Chrome application directory: {}...'.format(
directory_path))
# shutil.rmtree(directory_path)
def main():
delete_old_google_chrome_versions()
if __name__ == '__main__':
main()
或者，如何改进这个脚本？任何建议都会有所帮助，因为我在 Python 中真的没用。