I’ve been working with data imported from a CSV. Pandas changed some columns to float, so now the numbers in these columns get displayed as floating points! However, I need them to be displayed as integers or without comma. Is there a way to convert them to integers or not display the comma? Answer To m…
Tag: python
Python getting meaningful results from cProfile
I have a Python script in a file which takes just over 30 seconds to run. I am trying to profile it as I would like to cut down this time dramatically. I am trying to profile the script using cProfile, but essentially all it seems to be telling me is that yes, the main script took a long time
Python split function. Too many values to unpack error
I have a python function that must read data from file and split it into two key and value, and then store it in dictionary. Example: file: I use the split function for it, but when there is really a lot of data it raises value error What can I do about this ? This is the exact code that
How to configure display output in IPython pandas
I’m trying to configure my IPython output in my OS X terminal, but it would seem that none of the changes I’m trying to set are taking effect. I’m trying to configure the display settings such that wider outputs like a big DataFrame will output without any truncation or as the summary info. …
Is it possible to print without using the print function in Python?
I wondered whether it is possible to print (for example a string) in Python without the print function. This can be done by a command or by some trick. For example, in C there are printf and puts. Can someone show me a way to print or to deny this possibility? Answer
Pandas: getting the name of the minimum column
I have a Pandas dataframe as below: I want to append a reason column that gives a standard text + the column name of the minimum value of that row. In other words, the desired output is: I can do incomplete_df.apply(lambda x: min(x),axis=1) but this does not ignore NAN’s and more importantly returns the…
How to use Query Strings for filtering Querysets in Django?
I created my “API” using REST framework, now I am trying to do filtering for it. This is how my models.py looks like: I would like to see “all passengers in particular workspace” or “all passengers in particular airline” etc in my JSON file. Here is my serializers.py: And v…
matlab equivalent of dot star in python
I am working on a matlab conversion code. what is equivalent of .* in matlab with python? where v is numpy array : In such cases, how will I convert code to python? Answer For numpy arrays, just using * will do the element-wise multiplication as in Matlab’s .* Link you can use, Note: If you want to use …
What kind of problems (if any) would there be combining asyncio with multiprocessing?
As almost everyone is aware when they first look at threading in Python, there is the GIL that makes life miserable for people who actually want to do processing in parallel – or at least give it a chance. I am currently looking at implementing something like the Reactor pattern. Effectively I want to l…
query from postgresql using python as dictionary
I’m using Python 2.7 and postgresql 9.1. Trying to get dictionary from query, I’ve tried the code as described here: http://wiki.postgresql.org/wiki/Using_psycopg2_with_PostgreSQL It is printing the next answer: printing the item itself, show me that it is list. The excepted answer was dictionary.…