大约有 17,000 项符合查询结果（耗时：0.0397秒） [XML]
Should all Python classes extend object?
...;>> class Bar(object): pass
...
>>> type(Bar())
<class '__main__.Bar'>
Also the rules for multiple inheritance are different in ways that I won't even try to summarize here. All good documentation that I've seen about MI describes new-style classes.
Finally, old-style classe...
Create an empty list in python with certain size
...
you can do this: a = [0 for _ in range(10)]
– Kamiar
Dec 19 '18 at 21:55
...
How do I clone a Django model instance object and save it to the database?
...imary key of your object and run save().
obj = Foo.objects.get(pk=<some_existing_pk>)
obj.pk = None
obj.save()
If you want auto-generated key, set the new key to None.
More on UPDATE/INSERT here.
Official docs on copying model instances: https://docs.djangoproject.com/en/2.2/topics/db/que...
Recursively remove files
Does anyone have a solution to remove those pesky ._ and .DS_Store files that one gets after moving files from a Mac to A Linux Server?
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What is the difference between ManualResetEvent and AutoResetEvent in .NET?
...ass ManualResetEventSample
{
private readonly ManualResetEvent _manualReset = new ManualResetEvent(false);
public void RunAll()
{
new Thread(Worker1).Start();
new Thread(Worker2).Start();
new Thread(Worker3).Start();
Consol...
What is the difference between attribute and property? [closed]
...
In Python...
class X( object ):
def __init__( self ):
self.attribute
def getAttr( self ):
return self.attribute
def setAttr( self, value ):
self.attribute= value
property_name= property( getAttr, setAttr )
A property is a s...
SQL Server - copy stored procedures from one db to another
...ResiDazeMaster].[sys].[procedures] p
INNER JOIN [ResiDazeMaster].sys.sql_modules m ON p.object_id = m.object_id
OPEN c
FETCH NEXT FROM c INTO @sql
WHILE @@FETCH_STATUS = 0
BEGIN
SET @sql = REPLACE(@sql,'''','''''')
SET @sql = 'USE [' + @Name + ']; EXEC(''' + @sql + ''')'
EXEC(@sql)
...
Sorting Python list based on the length of the string
...
def lensort(list_1):
list_2=[];list_3=[]
for i in list_1:
list_2.append([i,len(i)])
list_2.sort(key = lambda x : x[1])
for i in list_2:
list_3.append(i[0])
return list_3
This works for me!
...
Flex-box: Align last row to grid
...p:wrap;
}
.grid::after{
content: '';
width: 10em // Same width of .grid__element
}
.grid__element{
width:10em;
}
With the HTML like this:
<div class=grid">
<div class="grid__element"></div>
<div class="grid__element"></div>
<div class="grid__elemen...
Python list directory, subdirectory, and files
...
comprehension list: all_files = [os.path.join(path, name) for name in files for path, subdirs, files in os.walk(folder)]
– Nir
Aug 12 '19 at 14:40
...