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pandas three-way joining multiple dataframes on columns
...ber of dataframes you want to merge.
Edit August 1, 2016: For those using Python 3: reduce has been moved into functools. So to use this function, you'll first need to import that module:
from functools import reduce
shar...
Disable IPython Exit Confirmation
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If you also want Ctrl-D to exit without confirmation, in IPython 0.11, add c.TerminalInteractiveShell.confirm_exit = False to your config file *.
If you don't have a config file yet, run ipython profile create to create one.
Note this ticket if you're working within the Django she...
Causes of getting a java.lang.VerifyError
...nks for that post, in my case, it was an different encoding: JasperReports XMl files save an encoding and a java version, you have to set this accordingly to your project settings (via iReport). That was the problem here, thanks for your idea with the encoding! :)
– Tobias
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Numpy where function multiple conditions
...ccepted answer explained the problem well enough. However, the the more Numpythonic approach for applying multiple conditions is to use numpy logical functions. In this ase you can use np.logical_and:
np.where(np.logical_and(np.greater_equal(dists,r),np.greater_equal(dists,r + dr)))
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How to create JSON string in C#
I just used the XmlWriter to create some XML to send back in an HTTP response. How would you create a JSON string. I assume you would just use a stringbuilder to build the JSON string and them format your response as JSON?
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Android, getting resource ID from string?
... although you need to use the format for your string as you use it in your XML files, i.e. package:drawable/icon.
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The superclass “javax.servlet.http.HttpServlet” was not found on the Java Build Path [duplicate]
...er.
For a Maven project:
Make sure, you have the dependency added in POM.xml.
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>...
Django import error - no module named django.conf.urls.defaults
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patterns has been removed. You can directly use a python list to add urls instead of using patterns.
– Akshay Hazari
Aug 3 '17 at 8:36
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sqlalchemy IS NOT NULL select
...LAlchemy won't emit != NULL however, even if you use column != None on the Python side; you get IS NOT NULL. Using .isnot() lets you force IS NOT on other types however (think .isnot(True) against boolean columns, for example).
– Martijn Pieters♦
Sep 15 '16 a...
How to have a transparent ImageButton: Android
...es me an error in the project as soon as I include the transparent line in xml.
19 Answers
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