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Print current call stack from a method in Python code
In Python, how can I print the current call stack from within a method (for debugging purposes).
7 Answers
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What is the use of printStackTrace() method in Java?
... of the instance to System.err.
It's a very simple, but very useful tool for diagnosing an exceptions. It tells you what happened and where in the code this happened.
Here's an example of how it might be used in practice:
try {
// ...
} catch (SomeException e) {
e.printStackTrace();
}
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Trim spaces from start and end of string
... and end of the title string. I was using this, but it doesn't seem to be working:
14 Answers
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Prevent multiple instances of a given app in .NET?
...ce already running");
return;
}
Application.Run(new Form1());
}
}
private static string appGuid = "c0a76b5a-12ab-45c5-b9d9-d693faa6e7b9";
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Is it sometimes bad to use ?
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The main reason for not using <br> is that it's not semantic. If you want two items in different visual blocks, you probably want them in different logical blocks.
In most cases this means just using different elements, for example <...
Get child node index
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One line version: for (var i=0; (node=node.previousSibling); i++);
– Scott Miles
Aug 29 '14 at 0:53
2
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How do I use the CONCAT function in SQL Server 2008 R2?
I was looking for a CONCAT function in SQL Server 2008 R2. I found the link for this function . But when I use this function, it gives the following error:
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How do I convert a numpy array to (and display) an image?
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You could use PIL to create (and display) an image:
from PIL import Image
import numpy as np
w, h = 512, 512
data = np.zeros((h, w, 3), dtype=np.uint8)
data[0:256, 0:256] = [255, 0, 0] # red patch in upper left
img = Image.fromarray(data, 'RGB')
img.save('my.png')
img.show()
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Devise Secret Key was not set
I am developing a Rails 4 app using the Active Admin gem for the administration back end. Active Admin in turn uses Devise for user authentication. Now, when I try to deploy the app using capistrano on the VPS server, I get the below error:
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How to execute mongo commands through shell scripts?
..."printjson(db.serverStatus())"
Please note: if you are using Mongo operators, starting with a $ sign, you'll want to surround the eval argument in single quotes to keep the shell from evaluating the operator as an environment variable:
mongo --eval 'db.mycollection.update({"name":"foo"},{$set:{"t...