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Difference between core and processor
What is the difference between a core and a processor?
6 Answers
6
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Catching multiple exception types in one catch block
...'d like a cleaner way to obtain the following functionality, to catch AError and BError in one block:
11 Answers
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What is “entropy and information gain”?
...le/female groups. That is given a list of names each labeled with either m or f, we want to learn a model that fits the data and can be used to predict the gender of a new unseen first-name.
name gender
----------------- Now we want to predict
Ashley f the gender o...
“Unsafe JavaScript attempt to access frame with URL…” error being continuously generated in Chrome w
Chrome (or any other webkit browser) throws a ton of these "Unsafe JavaScript attempt to access frame with URL..." when working with the Facebook API for example.
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vim deleting backward tricks
...urrent backward to beginning of line
dw deletes current to end of current word (including trailing space)
db deletes current to beginning of current word
Read this to learn all the things you can combine with the 'd' command.
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How to access environment variable values?
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Environment variables are accessed through os.environ
import os
print(os.environ['HOME'])
Or you can see a list of all the environment variables using:
os.environ
As sometimes you might need to see a complete list!
# using get will return `None` if a key is not present rather...
How do I get the row count of a pandas DataFrame?
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You can use the .shape property or just len(DataFrame.index). However, there are notable performance differences ( len(DataFrame.index) is fastest).
Code to reproduce the plot:
import numpy as np
import pandas as pd
import perfplot
perfplot.save(
"o...
Should I check in node_modules to git when creating a node.js app on Heroku?
I followed the basic getting started instructions for node.js on Heroku here:
12 Answers
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How can a Metro app in Windows 8 communicate with a backend desktop app on the same machine?
...on where you have the UI frontend built using the new Metro style of apps for windows 8, and would like it to communicate with a .NET application running on the desktop on the same local machine (e.g. a windows service app).
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Asking the user for input until they give a valid response
...put
age = int(input("Please enter your age: "))
except ValueError:
print("Sorry, I didn't understand that.")
#better try again... Return to the start of the loop
continue
else:
#age was successfully parsed!
#we're ready to exit the loop.
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