Strings in a DataFrame, but dtype is object?

Why does Pandas tell me that I have objects, although every item in the selected column is a string — even after e...

Python empty constructor?

Is there any way to create an empty constructor in python. I have a class: class Point: def __init__(self, x, y...

How to detect hologram overlays like the ones in ID Cards??

Is there any good way to detect the holograms inside security documents like identity cards? I've tried quite a few ...

How to flush output of print function??

How do I force Python's print function to output to the screen? This is not a duplicate of Disable output buffering...

Remove xticks in a matplotlib plot??

I have a semilogx plot and I would like to remove the xticks. I tried: plt.gca().set_xticks([]) plt.xticks([]) ax.s...

What is the maximum recursion depth in Python, and how to increase it??

I have this tail recursive function here: def recursive_function(n, sum): if n < 1: return sum e...

Generating all unique combinations for “drive ya nuts” puzzle?

A while back I wrote a simple python program to brute-force the single solution for the drive ya nuts puzzle. (sou...

Produce “dodged” or “side-by-side” bar/column charts in Altair??

Apologies if this has been asked before, but I'm looking for a way to create bar-charts that are "dodged" (language ...

Pandas Replace NaN with blank/empty string?

I have a Pandas Dataframe as shown below: 1 2 3 0 a NaN read 1 b l unread 2 c NaN re...

How to convert matrix to pandas data frame?

I'm trying to convert a matrix into a pandas data frame: matrixA={} matrixA[0,0]='a' matrixA[0,1]='b' matrixA[1,0]=...

Length of an integer in Python?

In Python, how do you find the number of digits in an integer? ...

Not managing to extract RAR archive using rarfile module?

I have been trying to make a script that extracts *.rar files for but am receiving errors. I've been struggling to u...