大约有 9,000 项符合查询结果（耗时：0.0281秒） [XML]
CHECK constraint in MySQL is not working
... ugh this looks very bulky. I think I rather create a tuple in python and check values there instead of putting this in.
– OzzyTheGiant
Jan 5 '17 at 15:32
...
Numpy index slice without losing dimension information
...
'dimensions' are dropped when indexing Python lists, alist[0] and kept when slicing them.
– hpaulj
May 13 '18 at 23:04
4
...
The “unexpected ++” error in jslint [duplicate]
...ion; some languages (see above) assume the sanity of the programmer, some (Python, R, MATLAB) don't. It's not for me to decide which are right. Still, JavaScript ain't any more "functional" than current-day C++, C# or Java (lambdas, closures, etc.)
– user719662
...
How to use if - else structure in a batch file?
...%==0 IF %C%==1 (
::copying a directory c from d, /s: boş olanlar hariç, /e:boş olanlar dahil
xcopy "%sourceCopyDirectory%" "%destinationCopyDirectory%" /s/e
)
IF %F%==0 IF %C%==0 (
::moving a directory
xcopy /E "%sourceMoveDirectory%" "%destinationMoveDirectory%"
rd /s /...
How to find the mime type of a file in python?
...
The python-magic method suggested by toivotuo is outdated. Python-magic's current trunk is at Github and based on the readme there, finding the MIME-type, is done like this.
# For MIME types
import magic
mime = magic.Magic(mime=T...
What's the best practice using a settings file in Python? [closed]
...
You can have a regular Python module, say config.py, like this:
truck = dict(
color = 'blue',
brand = 'ford',
)
city = 'new york'
cabriolet = dict(
color = 'black',
engine = dict(
cylinders = 8,
placement = 'mid',
...
How to change XAMPP apache server port?
This is my Apache httpd.conf settings :
6 Answers
6
...
Should all Python classes extend object?
...
In Python 2, not inheriting from object will create an old-style class, which, amongst other effects, causes type to give different results:
>>> class Foo: pass
...
>>> type(Foo())
<type 'instance'>
v...
Enter “&” symbol into a text Label in Windows Forms?
...ed Dec 1 '10 at 14:03
Øyvind BråthenØyvind Bråthen
52.2k2525 gold badges113113 silver badges138138 bronze badges
...
How to install psycopg2 with “pip” on Python?
...hes.
Option 1
Install the psycopg2-binary PyPI package instead, it has Python wheels for Linux and Mac OS.
pip install psycopg2-binary
Option 2
Install the prerequsisites for building the psycopg2 package from source:
Debian/Ubuntu
Python 3
sudo apt install libpq-dev python3-dev
You m...