大约有 45,000 项符合查询结果（耗时：0.0497秒） [XML]
Numpy: Get random set of rows from 2D array
...mask = numpy.random.choice([False, True], len(data_arr), p=[0.75, 0.25])
Now you can call data_arr[mask] and return ~25% of the rows, randomly sampled.
share
|
improve this answer
|
...
Angular JS break ForEach
...y where I stuck...and this helped..thanks a ton...Anyways I would like to know the reason for making forEach loop unbreakable . If any
– Saurabh Tiwari
Oct 4 '15 at 7:10
...
Real world example about how to use property feature in python?
...gth
@stride_length.setter
def stride_length(self, value):
if value > 10:
raise ValueError("This pedometer is based on the human stride - a stride length above 10m is not supported")
else:
self._stride_length = value
...
In Python, if I return inside a “with” block, will the file still close?
....
It is also mentioned in one of the examples of PEP-343 which is the specification for the with statement:
with locked(myLock):
# Code here executes with myLock held. The lock is
# guaranteed to be released when the block is left (even
# if via return or by an uncaught exception).
...
Split Python Flask app into multiple files
...rint(account_api)
@app.route("/")
def hello():
return "Hello World!"
if __name__ == "__main__":
app.run()
AccountAPI.py
from flask import Blueprint
account_api = Blueprint('account_api', __name__)
@account_api.route("/account")
def accountList():
return "list of accounts"
If thi...
What is the most accurate way to retrieve a user's correct IP address in PHP?
...VER variables headers available for IP address retrieval. I was wondering if there is a general consensus as to how to most accurately retrieve a user's real IP address (well knowing no method is perfect) using said variables?
...
How to HTML encode/escape a string? Is there a built-in?
...
Now that would be silly. I don't care much if it gets escaped or not. I'm just noting it's not required per the html specs.
– kch
Mar 28 '09 at 15:20
...
Why do x86-64 systems have only a 48 bit virtual address space?
...al answer is that AMD was just being cheap and hoped nobody would care for now, but I don't have references to cite.
share
|
improve this answer
|
follow
|
...
fs: how do I locate a parent folder?
...
@eyurdakul If I understand it corrently: __dirname may look like /path/to/your/dir, if you say __dirname + ".." it is /path/to/your/dir.., which is a nonexistent directory, rather than /path/to/your. The slash is important.
...
What is the difference between a static and a non-static initialization code block
...
The code block with the static modifier signifies a class initializer; without the static modifier the code block is an instance initializer.
Class initializers are executed in the order they are defined (top down, just like simple variable initializers) w...