大约有 45,000 项符合查询结果（耗时：0.0390秒） [XML]
How to include external Python code to use in other files?
...t explicitly name them, like:
from Math import Calculate, Add, Subtract
Now, you can reference Calculate, Add, and Subtract just by their names. If you wanted to import ALL functions from Math, do:
from Math import *
However, you should be very careful when doing this with modules whose conten...
How to limit the amount of concurrent async I/O operations?
...hould be using since it's more performant than the original Semaphore), it now boasts the WaitAsync(...) series of overloads, with all of the expected arguments - timeout intervals, cancellation tokens, all of your usual scheduling friends :)
Stephen's also written a more recent blog post about the...
Bulk insert with SQLAlchemy ORM
... 1.0.0:
Bulk operations - SQLAlchemy docs
With these operations, you can now do bulk inserts or updates!
For instance, you can do:
s = Session()
objects = [
User(name="u1"),
User(name="u2"),
User(name="u3")
]
s.bulk_save_objects(objects)
s.commit()
Here, a bulk insert will be made....
Git Symlinks in Windows
... communicating success/failure of the requested command, respectively) are now properly preserved/returned.
The add-symlink alias now works more like ln(1) and can be used from any directory in the repository, not just the repository’s root directory.
The rm-symlink alias (singular) has been super...
No mapping found for field in order to sort on in ElasticSearch
...updating any libraries etc. but today I started getting this same error. I now added "ignore_unmapped" : true and it started to work again but strange thing is, what has happened behind the scene! Who knows! Anyway, it works now. +1
– BentCoder
May 19 '16 at 20...
Run certain code every n seconds [duplicate]
...le, I guess I pasted the code from the web user manual. The above code is now corrected (still not tested, but it comes from my own working code and I am using it constantly). PS: maybe we are looking at different versions / modules? I'm sure my line is "from apscheduler.scheduler import Schedule...
How to read a file into a variable in shell?
...n variables.
This affects both expansion and read solutions, and I don't know any good workaround for it.
Example:
printf "a\0b" | od -tx1
S="$(printf "a\0b")"
printf "$S" | od -tx1
Outputs:
0000000 61 00 62
0000003
0000000 61 62
0000002
Ha, our NUL is gone!
Workarounds:
ASCII encode. Se...
Why does ++[[]][+[]]+[+[]] return the string “10”?
... itself.
In this case, + sees two operands: a number and an array. It’s now trying to coerce the two into the same type. First, the array is coerced into the string "0", next, the number is coerced into a string ("1"). Number + String === String.
"1" + "0" === "10" // Yay!
Specification deta...
How to check whether a script is running under Node.js?
...re and B: The modules exports things via properties on the exports object. Now how that is implement is left to the underlying system. Node.js wraps the module's content in an anonymous function:
function (exports, require, module, __filename, __dirname) {
See: https://github.com/ry/node/blob/ma...
Redirecting to URL in Flask
...fined If-Modified-Since headers.
New in version 0.6: The location can now be a unicode string that is
encoded using the iri_to_uri() function.
Parameters:
location – the location the response should redirect to.
code – the redirect status code. defaults to 302.
Response (...