删除Python中的旧目录
我有几个目录,我想超过7天的旧目录被删除。我已经实现了代码,但它似乎不起作用。谁能看出我错在哪里删除Python中的旧目录,python,time,directory,timestamp,Python,Time,Directory,Timestamp,我有几个目录,我想超过7天的旧目录被删除。我已经实现了代码,但它似乎不起作用。谁能看出我错在哪里 def delete_sandbox(): for directories in os.listdir(os.getcwd()): if not os.path.isdir(directories) or not os.stat(directories).st_ctime < time.time()-(7*24*3600): contin
def delete_sandbox():
for directories in os.listdir(os.getcwd()):
if not os.path.isdir(directories) or not os.stat(directories).st_ctime < time.time()-(7*24*3600):
continue
os.chdir(directories)
drop_sandbox()
os.chdir(rootDir)
os.system("sudo rm -rf "+directories)
print 'Folders older than 7 days old dropped and removed'
是否有其他方法删除这些文件夹
我让它工作了,我使用了shutil.rmtree
,一切似乎都工作了。谢谢你的帮助。经修订的守则是:
def delete_sandbox():
for directories in os.listdir(os.getcwd()):
if not os.path.isdir(directories) or not os.stat(directories).st_ctime < time.time()-(sbox_age):
continue
os.chdir(directories)
drop_sandbox()
os.chdir(rootDir)
shutil.rmtree(directories)
print 'Sandboxes older than 7 days old dropped and removed'
delete_sandbox()
def delete_sandbox():
对于os.listdir(os.getcwd())中的目录:
如果不是os.path.isdir(目录)或不是os.stat(目录).st_ctime
os.listdir返回字符串列表,这些字符串是相对路径。当您chdir到rootdir时,取决于rootdir是什么,这些路径可能不再有效
做什么?(你给我们的函数是drop\u sandbox()
)也许你的意思是这是一个递归函数,使用了错误的函数名delete\u sandbox()
- rootDir是全局变量吗?也许你的意思是
os.chdir(“…”)
包含什么rootDir
提供相对路径。如果os.listdir
是搜索的基础,则列出的目录可能无法工作。更糟糕的是:如果他们这样做了,你可能会删除你仍然想要的东西rootDir
此外,
shutil
包有一个rmtree
函数,您可能需要研究它。虽然公认答案的总体思路是合理的,但实现有几个要点是不合理的
import os
import time
import shutil
numdays = 86400*7
now = time.time()
directory=os.path.join("/home","path")
for r,d,f in os.walk(directory):
for dir in d:
timestamp = os.path.getmtime(os.path.join(r,dir))
if now-numdays > timestamp:
try:
print "removing ",os.path.join(r,dir)
# shutil.rmtree(os.path.join(r,dir)) #uncomment to use
except Exception,e:
print e
pass
else:
print "some message for success"
class CompRM(object):
exception_list = []
path = None
comparator = None
comparator_target = None
comparator_delete_condition = None
delete_directories = False
delete_files = False
def __init__(self, target_path, comparator, comparator_target='st_mtime', comparator_delete_condition='>', delete_directories=False, delete_files=False):
self.path = target_path
self.comparator = comparator
self.comparator_target = comparator_target
self.comparator_delete_condition = comparator_delete_condition
for directory_path, directory_names, file_names in os.walk(self.path):
if delete_directories is True:
self.walk_names(directory_path, directory_names)
if delete_files is True:
self.walk_names(directory_path, file_names)
if len(self.exception_list) > 0:
raise Exception({'message': 'Encountered exceptions while deleting.', 'debug': self.exception_list})
def walk_names(self, directory_path, names):
for _name in names:
_path = os.path.join(directory_path, _name)
_stat = os.stat(_path)
_value = getattr(_stat, self.comparator_target)
if self.delete_condition_met(_value):
self.safe_remove(_path)
def delete_condition_met(self, value):
if self.comparator > value and self.comparator_delete_condition is '>':
return True
if self.comparator < value and self.comparator_delete_condition is '<':
return True
return False
def safe_remove(self, remove_path):
print 'remove', remove_path
shutil.rmtree(remove_path, onerror=self.register_exception)
def register_exception(self, function, path, exception_info):
self.exception_list.append({
function: function,
path: path,
exception_info: exception_info,
})
其中,comparator_target是os.stat()中用于比较的attributename
问候,,
Justus什么意思似乎不起作用?您是否收到任何错误消息?如果某些目录名包含空格(在os.system调用时),或者条目中的当前目录不是
rootDir
,则此操作将失败。您是否有错误,如果有,是什么,在哪里?或者意外的行为,如果是的话是什么,在哪里?一些print
s将向我们提供更多信息(您当前提供的信息约为0位;-)。在呼叫系统时,特别是涉及“rm”时,一般建议/警告。为函数指定一个默认为True的干运行选项,该选项打印它将运行的系统命令。exception\u list=[]
在类级别是一个bug。该列表在实例之间共享。易变属性总是需要在\uuuu init\uuuu
中设置以避免这种情况(通常,对所有要在实例上设置/使用的属性都这样做是一个好主意,并且只有当您确实想在类级别上访问它们时才使用类级别的属性),对于比较来说是错误的。使用==
进行检查-is检查相同的对象,这是完全一致的,并且是一个对某些短字符串有效的实现细节。
class CompRM(object):
exception_list = []
path = None
comparator = None
comparator_target = None
comparator_delete_condition = None
delete_directories = False
delete_files = False
def __init__(self, target_path, comparator, comparator_target='st_mtime', comparator_delete_condition='>', delete_directories=False, delete_files=False):
self.path = target_path
self.comparator = comparator
self.comparator_target = comparator_target
self.comparator_delete_condition = comparator_delete_condition
for directory_path, directory_names, file_names in os.walk(self.path):
if delete_directories is True:
self.walk_names(directory_path, directory_names)
if delete_files is True:
self.walk_names(directory_path, file_names)
if len(self.exception_list) > 0:
raise Exception({'message': 'Encountered exceptions while deleting.', 'debug': self.exception_list})
def walk_names(self, directory_path, names):
for _name in names:
_path = os.path.join(directory_path, _name)
_stat = os.stat(_path)
_value = getattr(_stat, self.comparator_target)
if self.delete_condition_met(_value):
self.safe_remove(_path)
def delete_condition_met(self, value):
if self.comparator > value and self.comparator_delete_condition is '>':
return True
if self.comparator < value and self.comparator_delete_condition is '<':
return True
return False
def safe_remove(self, remove_path):
print 'remove', remove_path
shutil.rmtree(remove_path, onerror=self.register_exception)
def register_exception(self, function, path, exception_info):
self.exception_list.append({
function: function,
path: path,
exception_info: exception_info,
})
comprm = CompRM('/tmp', time.time() - 60*60*24*7, comparator_target='st_ctime', delete_files=True)