大约有 46,000 项符合查询结果（耗时：0.0243秒） [XML]
MySQL CONCAT returns NULL if any field contain NULL
...
Sorry neeraj i missed the '_' between Concat and WS Please try again with CONCAT_WS().I have updated the answer please check,
– Gurmeet
Apr 1 '13 at 10:14
...
Get a filtered list of files in a directory
...noticed that the Python docs say glob() "is done by using the os.listdir() and fnmatch.fnmatch() functions in concert, and not by actually invoking a subshell". In other words, glob() doesn't have the efficiency improvements one might expect.
– Ben Hoyt
Feb 11 ...
Find all files in a directory with extension .txt in Python
...riable is a single filename. Even better would be to change the f to files and then the for loops could become for file in files.
– martineau
Oct 26 '10 at 14:18
47
...
Python: Get relative path from comparing two absolute paths
...
os.path.commonprefix() and os.path.relpath() are your friends:
>>> print os.path.commonprefix(['/usr/var/log', '/usr/var/security'])
'/usr/var'
>>> print os.path.commonprefix(['/tmp', '/usr/var']) # No common prefix: the root is...
Why is the apt-get function not working in the terminal on Mac OS X v10.9 (Mavericks)?
I was watching this , and, as you can see, the first command I am told to put in is:
5 Answers
...
Installing PG gem on OS X - failure to build native extension
...
Same error for me and I didn't experience it until I downloaded OS X 10.9 (Mavericks). Sigh, another OS upgrade headache.
Here's how I fixed it (with homebrew):
Install another build of Xcode Tools (typing brew update in the terminal will p...
Get path from open file in Python
...file.TemporaryFile you mentioned. This is specific case for temporary file and, as seen in the docs, there is already existing solution. tempfile.TemporaryFile is not meant to be used in case you want to read the name.
– Tadeck
Dec 6 '12 at 21:12
...
Where do I find old versions of Android NDK? [closed]
Does anyone know where I can find older versions of the Android NDK? Our code doesn't build with r6. Surely there must be archived versions somewhere.
...
How to fix “Attempted relative import in non-package” even with __init__.py
...s could use quite a bit more detail, given the popularity of this question and answer. Noting stuff like from what directory to execute the above shell command, the fact that you need __init__.pys all the way down, and the __package__-modifying trickery (described below by BrenBarn) needed to allow ...
Python: Best way to add to sys.path relative to the current running script
... (let's say project/bin ). I also have a library located in project/lib and want the scripts to automatically load it. This is what I normally use at the top of each script:
...