How do you create nested dict in Python?
I have 2 CSV files: ‘Data’ and ‘Mapping’:
python-2.7
Dead simple example of using Multiprocessing Queue, Pool and Locking
I tried to read the documentation at http://docs.python.org/dev/library/multiprocessing.html but I’m still struggling with multiprocessing Queue, Pool and Locking. And for now I was able to build the example below.
sklearn error ValueError: Input contains NaN, infinity or a value too large for dtype(‘float64’)
I am using sklearn and having a problem with the affinity propagation. I have built an input matrix and I keep getting the following error.
Understanding recursion in Python
I’m really trying to wrap my brain around how recursion works and understand recursive algorithms. For example, the code below returns 120 when I enter 5, excuse my ignorance, and I’m just not seeing why?
How to map numeric data into categories / bins in Pandas dataframe
I’ve just started coding in python, and my general coding skills are fairly rusty 🙁 so please be a bit patient
Changing an element in one list changes multiple lists
I have a list of List say mysolution: >>>mySolution [[0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0], [0, 0, 0, 0]] >>> mySolution[0][0] = 1 >>> mySolution [[1, 0, 0, 0], [1, 0, 0, 0], [1, 0, 0, 0], [1, 0, 0, 0]] Intended output: [[1, 0, 0, 0], [0, 0, … Read more
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
Naturally sorting Pandas DataFrame
I have a pandas DataFrame with indices I want to sort naturally. Natsort doesn’t seem to work. Sorting the indices prior to building the DataFrame doesn’t seem to help because the manipulations I do to the DataFrame seem to mess up the sorting in the process. Any thoughts on how I can resort the indices naturally?
How to convert a given ordinal number (from Excel) to a date
I have a Value 38142 I need to convert it into date format using python.
if use this number in excel and do a right click and format cell at that time the value will be converted to 04/06/2004 and I need the same result using python. How can I achieve this
How to get the latest file in a folder?
I need to get the latest file of a folder using python. While using the code: