Comment by abought on Append a Header for CSV file?
Possible duplicate: stackoverflow.com/questions/4454298/…
View ArticleComment by abought on how to do Python unittest for while loop?
Why does the function "judge" always return the same thing regardless of inputs? One problem I see here is that there is no output behavior that you could capture (eg "return result"); the only...
View ArticleAnswer by abought for Python structure mistake
Your code as written is problematic, because steps 1 and 4 are the opposite of each other. Thus they can't be done in completely separate steps: you convert all As to Ts, then convert those (plus the...
View ArticleDynamically adding new fabric canvases
I am working on a project that requires creating multiple canvas elements (separate bars each representing one distinct gradient). I would like to do this dynamically with fabric.js, eg: function...
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Cloudwatch alarm triggers too often
Summary: We are using a Cloudwatch alarm to tell us when a certain (EMR) cluster is having trouble getting (spot) instances. The alarm is triggering more often than it should. Why?Detail: In theory, it...
View ArticleIssue making range requests in some browsers
Summary: I would like to make a Range header request from GitHub pages. However, in some browsers this is failing- possibly due to Gzip compression issues. It works in Chrome (v74) but not in FF (v66),...
View ArticleAnswer by abought for Using print with open=
In python, we don't normally do this using print statements. Consider the following alternative. Using a "context manager" allows you to write more than one line, and also helps avoid certain problems...
View ArticleAnswer by abought for How to validate checkbox, selectbox and radiobutton in...
ember-cp-validations validates the value of variables (whether on a model, controller, etc). As long as the checkbox is bound to a variable of the same name as specified in the validator, it should...
View ArticleAnswer by abought for how do post to a nested route in emberjs
Two possible options:If you are using ember data, define a model with fields that match your API endpoint, and use this.store.createRecord(...) to create the model. By default, ember-data will try to...
View ArticleMouse pointer not staying hidden on chrome fullscreen div
I would like to make an HTML element fullscreen (a div), and have the pointer remain hidden.This would seem straightforward (set cursor:none on the div when it becomes fullscreen), but it is not...
View ArticleAnswer by abought for Accessing Ember environment config (ENV) from addon?
I've used this package in my projects to good effect:https://github.com/null-null-null/ember-get-config
View ArticleAnswer by abought for Ember non-static Navbar
It sounds like you want to change the contents of a parent route based on the state (and type) of the logged in user. This is often done via ember services- shared data that persists for the lifetime...
View ArticleAnswer by abought for Nested list comprehension, python, pattern printing
List comprehensions aren't a direct replacement for loops in every case.You use a list comprehension when you want to store the resulting data structure for later use- it takes up space in memory, etc....
View ArticleAnswer by abought for Most pythonic way to delete a file which may not exist
os.path.exists returns True for folders as well as files. Consider using os.path.isfile to check for whether the file exists instead.
View ArticleAnswer by abought for How to use a pair of nested for loops to iterate over a...
Based on your question, it appears you're using Numpy. If you're not too concerned about speed, you can simply call the function with a numpy array; the function will operate on the entire array for...
View ArticleAnswer by abought for python decorator for field
If you want to preserve variable names for referring to later, you could use a dictionary. Hence, this code inside your object...self.dict_bar_props = {}self.dict_bar_props["a"] =...
View ArticleAnswer by abought for Separating list elements in Python
Python for loops iterate over actual object references. You may be seeing strange behavior partly because you're giving the object reference i where a numerical list index should go ( the statement...
View ArticleAnswer by abought for Running a Python script for the first time. Using...
You actually can run your script from inside the interactive interpreter (which is what you get when you run python instead of running a script from the terminal as python scriptname.py). First, cd to...
View ArticleAnswer by abought for Count all values in a matrix less than a value
The numpy.where function is your friend. Because it's implemented to take full advantage of the array datatype, for large images you should notice a speed improvement over the pure python solution you...
View ArticleAnswer by abought for python: why IDLE is slower than terminal?
The bulk of the problem is in how IDLE handles printing of text to the output window; try commenting out the print statement and see if the performance gap remains. See this closely related thread:...
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