Python stackoverflow Examples

I am trying to crop a portion of an image as shown below using opencv / PIL . I want to crop the re… Read more Opencv Image Manipulation To Crop An Angled Section Of An Image In Python

Is there a way to make sure all imports listed in all of my python files are in PYTHONPATH. Basical… Read more Utility To Check Imports In Python Without Running The Code (python2.7)

Heres the scenario I have a password that must be entered if entered wrong the script will not proc… Read more How Can I Have A Python Script Safely Exit Itself?

I have two strings and I would like to have the intersection on them including duplicate items: str… Read more Python List Intersection With Non Unique Items

I am trying to unstack a column in python but it isn't quite doing what I am expecting. My tabl… Read more Using Unstack In Python

When running the following code in Jupyter Notebooks using an excel with 500 rows: import pandas as… Read more How To Get A Vertical Scrollbar In Html Output From Jupyter Notebooks

I am looking to use numpy.unique to obtain the reverse unique indexes of two columns of a pandas.Da… Read more Using Numpy.unique On Multiple Columns Of A Pandas.dataframe

I have this python code for displaying some numbers over time: import matplotlib.pyplot as plt impo… Read more How Do I Display Dates When Plotting In Matplotlib.pyplot?

I have a group by object.I want to retrieve rows of a particular column of the group by object in f… Read more How To Retrieve Rows Of A Pandas Groupby Object In For Loop

Let A,C and B be numpy arrays with the same number of rows. I want to update 0th element of A[0], 2… Read more Vectorized Update Numpy Array Using Another Numpy Array Elements As Index

Now that the insertion order of Python dictionaries is guaranteed starting in Python 3.7 (and in CP… Read more Fastest Way To Sort A Python 3.7+ Dictionary

I don't think I'm understanding python subprocess properly at all but here's a simple e… Read more Python Subprocesses Don't Output Properly?

I want to pipe large video files from AWS S3 into Popen's stdin, which is from Python's poi… Read more How To Use Botocore.response.streamingbody As Stdin Pipe

I have the following code in a python script. parser.add_argument('ip_1', default='127… Read more Python Argumentparser - Error: Unrecognized Arguments: Ip_2 '127.0.0.1'`

I am using pygame and python for a project I am building, and I am building a splashscreen for when… Read more How To Use Pygame Set_alpha() On A Picture

I am getting the error mentioned in the title once trying to run a unittest on my Flask app using L… Read more Getting A "can't Pickle Local Object 'liveservertestcase'" Error When Trying To Use Liveservertestcase To Test Flask App

I am attempting to wrap V2 of the Slack API into a class so that I can keep information about my bo… Read more How To Wrap These Decorated Functions Into A Class?

import pytest def add(x): return x + 1 def sub(x): return x - 1 testData1 = [1, 2] tes… Read more How To Pass Testcase Value To Next One With Pytest

I'm trying to figure out scrapy and splash. As an exercise, I tried to make splash click on the… Read more Use Scrapy + Splash Return Html

I'm using OpenCV and GStreamer 0.10. I use this pipeline to receive the MPEG ts packets over U… Read more Grab The Frame From Gst Pipeline To Opencv With Python

I have a tuple with two arrays and I want to make it one array: The tuple: (array([['No', &… Read more How To Join Two Arrays In A Tuple Into One Array In Numpy

The following python script worked like a charm last month: Script: import SoftLayer client = SoftL… Read more Softlayer Getallbillingitems Stopped Working?

I have this architecture (very simplified) from django.db import Models class MainClass(models.Mod… Read more Django Onetoone Reverse Relationship Does Not Allow Null Values

I have the following simple Python script: import socket import ssl if __name__ == '__main__&#… Read more Ignore "certificate Unknown" Alert

I don't really have idea about that so I'd like you to give me some advice if you can. Gene… Read more Selenium Python Load Page And Script (firefox And Ie)

So far I have written following code: import pickle import numpy as np import pandas as pd import t… Read more How Can I Complete Following Gru Based Rnn Written In Tensorflow?

The function 'Convert to UTF-8 without BOM' of Notepad++ is really nice. But I have 200 fil… Read more Notepad++ Convert To Utf-8 Multiple Files

In my admin.py file I am trying to use Prepopulated_fields to auto slug a title. It seems to have p… Read more Django Prepopulated Fields With Two/three Letter Words

I'm looking into moving an existing powercli deployment script to python/pyvmomi, to get multi-… Read more What Is The Pyvmomi Equivalent Of Invoke-vmscript In Powercli?

i have an excel data that i read in with python pandas: import pandas as pd data = pd.read_csv('… Read more Skipping Unknown Number Of Lines To Read The Header Python Pandas

I'm fairly new to Python and have just started to play around with tkinter. Running the below c… Read more Tkinter 'nonetype' Object Has No Attribute 'pack' (still Works?)

Using flask, flask-assets, webassets I am trying to pass a filter specific configuration for a part… Read more How To Pass Filter Specific Configuration Options In Webassets

I want extract strings from this text with regex: ¬~ZCC÷0¬ZAF÷~World¬~AA÷Eef~RZgth¬AD¬~AA÷jaKNedK8¬… Read more Get Strings List In Python With Regex

I have a Flask script which creates a website and prints some data dynamically. - The data which it… Read more How Can I Run A Python Script From Within Flask

I have got some direction from this question. I first make the index like below. import lucene from… Read more How To Get A List Of All Tokens From Lucene 8.6.1 Index Using Pylucene?

I'm having trouble scaling my Y axis histogram by frequencies rather than by counts (which is w… Read more Histogram Pyplot Y Axis Scaling

I'm successfully using a custom user model with django. The last thing to get working is the &… Read more Django Custom User Admin Change_password

I have table formatted as follow : foo - bar - 10 2e-5 0.0 some information quz - baz - 4 1e-2 1 so… Read more Python Pandas : How To Skip Columns When Reading A File?

Here is the situation I am facing with: I just wrote a Flask app that people can input the text rev… Read more How To Cache A Large Machine Learning Model In Flask?

We have a YAML file which looks somewhat like the following: all: children: allnetxsites: … Read more How To Parse Deeply Nested Yaml Data Structures In Python

I want a python tkinter application to register a global hotkey (triggered even if the application … Read more Global Hotkey On Windows With Tkinter

I'm trying to build a simple online quiz using Flask and Python 3.6, using HTML forms with radi… Read more How To Carry String With Spaces Through A Html Form, Using Flask

I am having a problem converting an image I;16 to JPEG with PIL. My original image can be found her… Read more Pil Converting From I;16 To Jpeg Produce White Image

I am writing a Python script in Python 3.5, I have a host and port and what I am trying to do is cr… Read more Constantly Monitoring A Tcp Streaming Feed For Data In Python

I am trying to stream the output of xinput into my python program, however my program just waits an… Read more Reading Stdout From Xinput Test In Python

I try to move some dos command from my batch file into python but get this error, The filename, dir… Read more Why This Dos Command Does Not Work Inside Python?

I am using Django for contact form in my website . I get problem when submit [Errno 97] Address f… Read more Django Contact Form Mail Error :address Family Not Supported By Protocol Request

I'm trying to make a Tkinter menu that is like a taskbar checker. So if I go to this menu and c… Read more Tkinter Menu And Buttons

As titled, several thread accessing one variable, and only one thread will change the variable, and… Read more Multithreading With A Global Variable: If Only One Thread Is Changing The Variable, Is It Necessary To Lock It?

import numpy as np File '/home/anirrudh/.virtualenvs/ml4t2/local/lib/python2.7/site-packages/… Read more Numpy Import Throws Attributeerror: 'module' Object Has No Attribute 'core'

I'm trying to do an unbelievably simple thing: load parts of an Excel worksheet into a Numpy ar… Read more Excel Worksheet To Numpy Array

I've been working on a project that uses SciPy's optimize.curve_fit() function to fit a cur… Read more I Need A Python Function That Can Fit A Curve Within A Parameter Space

I'm using pylint in Visual Studio Code to develop a Google App Engine (GAE) Cloud Endpoint API … Read more Visual Studio Code Pylint: Unable To Import 'protorpc'

I had to download my python version from 3.5 to 3.4 because one of the packages I needed wasn't… Read more Spyder/juypter Not Working After Downgrading Python

I have this issue where I would like to shuffle a list, but only do so slightly. Say, I want only a… Read more How To Lightly Shuffle A List In Python

I would like to extend the list class in Python so that it can accept lists of integers and boolean… Read more How To Extend List Class To Accept Lists For Indecies In Python, E.g. To Use List1[list2] = List3[list4]

I am trying to write algorithm for football group stage. for example: i have 4 teams in the stage. … Read more Python (football Games Algorithm Troubles)

I am unable to save anything in my django non-rel development project.. I have google app engine sd… Read more Nothing Getting Stored In Django Non-rel For Google App Engine

How would I go about loading a map file in Pygame / Python? I would like to load a map file in this… Read more Loading A Map In Pygame / Python