Shift NaNs to the end of their respective rows
I have a DataFrame like :
Python
Direct assignment to the forward side of a many-to-many set is prohibited. Use emails_for_help.set() instead
I am new to Django and didn’t find any reference regarding this issue. I am getting this error when i use many to many field in Django model (models.py). I guess the issue is assigning m2m field in view(views.py) from form(forms.py).
Splitting a number into the integer and decimal parts
Is there a pythonic way of splitting a number such as 1234.5678 into two parts (1234, 0.5678) i.e. the integer part and the decimal part?
Creating a new file, filename contains loop variable, python
I want to run a function over a loop and I want to store the outputs in different files, such that the filename contains the loop variable. Here is an example
determine matplotlib axis size in pixels
Given a set of axes in matplotlib, is there a way to determine its size in pixels? I need to scale things according to adjust for larger or smaller figures.
How can I update an attribute created by a base class’ mutable default argument, without modifying that argument?
This question already has answers here: Why does using `arg=None` fix Python’s mutable default argument issue? (5 answers) Closed last month. I’ve found a strange issue with subclassing and dictionary updates in new-style classes: Python 2.6.2 (r262:71605, Apr 14 2009, 22:40:02) [MSC v.1500 32 bit (Intel)] on win32 >>> class a(object): … def __init__(self, props={}): … Read more
Add alpha to an existing matplotlib colormap
I’d like to make an overlay of several hexbin plots, but with builtin colormaps only the last one is visible. I don’t want to construct a colormap de novo. How one would add linear alpha to the colormap without knowing the inner structure of the colormap beforehand?
Checking a nested dictionary using a dot notation string “a.b.c.d.e”, automatically create missing levels
Given the following dictionary:
PyAudio failed to install on Windows 10
When I am trying to install PyAudio using
“unstack” a pandas column containing lists into multiple rows
Say I have the following Pandas Dataframe: df = pd.DataFrame({"a" : [1,2,3], "b" : [[1,2],[2,3,4],[5]]}) a b 0 1 [1, 2] 1 2 [2, 3, 4] 2 3 [5] How would I “unstack” the lists in the “b” column in order to transform it into the dataframe: a b 0 1 1 1 1 2 … Read more