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How to step through Python code to help debug issues?
...lled pdb just for doing that!
You can launch a Python program through pdb by using pdb myscript.py or python -m pdb myscript.py.
There are a few commands you can then issue, which are documented on the pdb page.
Some useful ones to remember are:
b: set a breakpoint
c: continue debugging until y...
DbArithmeticExpression arguments must have a numeric common type
...estion but in your specific case instead of using DBFunctions as suggested by @GertArnold , couldn't you just invert the operation move out the arithmetic in question from the Lambda?
After all clientDateTime and time24 are fix values so their difference does not need to be recalculated in every it...
Regular expression matching a multiline block of text
...
You may want to replace the second dot in the regex by [A-Z] if you don't want this regular expression to match just about any text file with an empty second line. ;-)
– MiniQuark
Feb 25 '09 at 20:36
...
How do I do word Stemming or Lemmatization?
...st time, you must download the corpus prior to using it. This can be done by:
>>> import nltk
>>> nltk.download('wordnet')
You only have to do this once. Assuming that you have now downloaded the corpus, it works like this:
>>> from nltk.stem.wordnet import WordNetLe...
How can you set class attributes from variable arguments (kwargs) in python
...owed attributes to just one default value.
So, to add to the answers given by @fqxp and @mmj:
class Myclass:
def __init__(self, **kwargs):
# all those keys will be initialized as class attributes
allowed_keys = set(['attr1','attr2','attr3'])
# initialize all allowed key...
Could someone explain the pros of deleting (or keeping) unused code?
...s I've worked on.
The maintenance of any code is an administrative burden. By preserving
old redundant code that burden is increased. For example, merging changes in the main branch becomes harder because there is more code to work through and more possibility to make a mistake.
What happens over ti...
Downloading all maven dependencies to a directory NOT in repository?
...ot sure about validate) already copies all dependencies to your local repo by default. This is not for that. Instead it's for situations where you need your app's dependencies for whatever reason. I'm using it right now to inspect the dependent libraries for redundant API definitions (e.g. some libr...
Can't stop rails server
I am new to rails and I am using an ubuntu machine and the rubymine IDE. The problem is that I am unable to stop the rails server. I tried to stop the server by killing the rails process. But, when I run pgrep -l rails , no such process is found. So, I am only able to kill ruby processes, but, the ...
Javascript split regex question
...ouble.
I want the ability to split a date via javascript splitting either by a '-','.','/' and ' '.
7 Answers
...
How to insert an element after another element in JavaScript without using a library?
... referenceNode.nextSibling will be null and insertBefore handles that case by adding to the end of the list.
So:
function insertAfter(newNode, referenceNode) {
referenceNode.parentNode.insertBefore(newNode, referenceNode.nextSibling);
}
You can test it using the following snippet:
fun...