Python – Classes and OOP Basics
I do not fully understand classes. I have read the python documentation and several other tutorials. I get the basic gist of it but don’t understand the nuance. For instance in my code here:
python
Want to find contours -> ValueError: not enough values to unpack (expected 3, got 2), this appears
My simple Python code is this
Size of list in memory
I just experimented with the size of python data structures in memory. I wrote the following snippet:
Cleanest way to get last item from Python iterator
What’s the best way of getting the last item from an iterator in Python 2.6? For example, say
What is the most efficient string concatenation method in Python?
Is there an efficient mass string concatenation method in Python (like StringBuilder in C# or StringBuffer in Java)?
Multiprocessing: How to use Pool.map on a function defined in a class?
When I run something like:
How to center a window on the screen in Tkinter?
I’m trying to center a tkinter window. I know I can programatically get the size of the window and the size of the screen and use that to set the geometry, but I’m wondering if there’s a simpler way to center the window on the screen.
How do I exchange keys with values in a dictionary?
I receive a dictionary as input, and would like to to return a dictionary whose keys will be the input’s values and whose value will be the corresponding input keys. Values are unique. For example, say my input is: a = dict() a['one']=1 a['two']=2 I would like my output to be: {1: 'one', 2: 'two'} … Read more
Dynamic instantiation from string name of a class in dynamically imported module?
In python, I have to instantiate certain class, knowing its name in a string, but this class ‘lives’ in a dynamically imported module. An example follows:
Binary representation of float in Python (bits not hex)
How to get the string as binary IEEE 754 representation of a 32 bit float?