Unable to initialize device PRN in Python
I attempt to run a python program and the following pops up in command prompt: “Unable to initialize device PRN” I should also mention that the program runs fine.
python-3.x
What is __pycache__?
From what I understand, a cache is an encrypted file of similar files. What do we do with the __pycache__ folder? Is it what we give to people instead of our source code? Is it just my input data? This folder keeps getting created, what it is for?
pandas: merge (join) two data frames on multiple columns
Try this left_on : label or list, or array-like Field names to join on in left DataFrame. Can be a vector or list of vectors of the length of the DataFrame to use a particular vector as the join key instead of columns right_on : label or list, or array-like Field names to join on … Read more
TypeError: Missing 1 required positional argument: ‘self’
You need to instantiate a class instance here. Use Small example –
Name ‘xrange’ is not defined in Python 3 [duplicate]
You’re probably using Python3, where xrange has become range.
How to upgrade pip3?
I want to use python3.5 to develop basically, but many times when I install the module for the python 3.5, it always failed. And the terminal told me that higher version is available, it did not work when I upgrade it.
Python 3.2 Unable to import urllib2 (ImportError: No module named urllib2)
I am using Windows, and I get the error: I think this is the solution for Linux. But how to set this in Windows? I am using Python 3.2 and I am not able see urllib2 there in the LiB folder.
How to find all the indexes of a recurring item in a list?
Use enumerate here
‘python3’ is not recognized as an internal or external command, operable program or batch file
There is no python3.exe file, that is why it fails. Try: py instead. py is just a launcher for python.exe. If you have more than one python versions installed on your machine (2.x, 3.x) you can specify what version of python to launch by py -2 or py -3
Error in Python script “Expected 2D array, got 1D array instead:”?
You are just supposed to provide the predict method with the same 2D array, but with one value that you want to process (or more). In short, you can just replace With And it should work. EDIT: This answer became popular so I thought I’d add a little more explanation about ML. The short version: we can … Read more