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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.
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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
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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.
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How to HTML encode/escape a string? Is there a built-in?
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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
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Multiple aggregations of the same column using pandas GroupBy.agg()
...put
column names, pandas accepts the special syntax in GroupBy.agg(),
known as “named aggregation”, where
The keywords are the output column names
The values are tuples whose first element is the column to select and the second element is the aggregation to apply to that column.
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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...
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
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In Python, if I return inside a “with” block, will the file still close?
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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).
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Nested attributes unpermitted parameters
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Seems there is a change in handling of attribute protection and now you must whitelist params in the controller (instead of attr_accessible in the model) because the former optional gem strong_parameters became part of the Rails Core.
This should look something like this:
class PeopleCo...
fs: how do I locate a parent folder?
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@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.
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