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Pandas percentage of total with groupby
...u can calculate the percentage in a simpler way -- just groupby the state_office and divide the sales column by its sum. Copying the beginning of Paul H's answer:
# From Paul H
import numpy as np
import pandas as pd
np.random.seed(0)
df = pd.DataFrame({'state': ['CA', 'WA', 'CO', 'AZ'] * 3,
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When/Why to use Cascading in SQL Server?
When setting up foreign keys in SQL Server, under what circumstances should you have it cascade on delete or update, and what is the reasoning behind it?
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Concurrent.futures vs Multiprocessing in Python 3
Python 3.2 introduced Concurrent Futures , which appear to be some advanced combination of the older threading and multiprocessing modules.
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What is the difference between char array and char pointer in C?
I am trying to understand pointers in C but I am currently confused with the following:
8 Answers
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How do you remove duplicates from a list whilst preserving order?
Is there a built-in that removes duplicates from list in Python, whilst preserving order? I know that I can use a set to remove duplicates, but that destroys the original order. I also know that I can roll my own like this:
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Find first element in a sequence that matches a predicate
I want an idiomatic way to find the first element in a list that matches a predicate.
4 Answers
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How do I put double quotes in a string in vba?
I want to insert an if statement in a cell through vba which includes double quotes.
5 Answers
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How can I open several files at once in Vim?
Is there a way to open all the files in a directory from within Vim? So a :command that would say in effect "Open all the files under /some/path into buffers".
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How do I use the nohup command without getting nohup.out?
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The nohup command only writes to nohup.out if the output would otherwise go to the terminal. If you have redirected the output of the command somewhere else - including /dev/null - that's where it goes instead.
nohup command >/dev/null 2>&1 # doesn't crea...
Django Rest Framework File Upload
I am using Django Rest Framework and AngularJs to upload a file. My view file looks like this:
15 Answers
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