Python Courses, Training, and Tutorials

GridSearchCV's documentations states that I can pass a scoring function. scoring : string, cal… Read more Pass A Scoring Function From Sklearn.metrics To Gridsearchcv

I have following Group and Contact model in flask with Sql Alchemy ORM group_contact = db.Table( … Read more Flask Many To Many Join As Done By Prefetch_related From Django

Hi I'm trying to reshape a data frame in a certain way. this is the data frame I have, … Read more Pandas Dataframe Reshaping/stacking Of Multiple Value Variables Into Seperate Columns

I have a chat bot for an Instant messenger and I am trying to make a math solver for it but it can&… Read more This Python Code Is Not Solving Equations

Let's consider a DataFrame that contains 1 row of 2 values per each day of the month of Jan 201… Read more Python, Pandas: Use The Groupby.groups Description To Apply It To Another Grouping

I'm making over 100K calls to an api, using 2 functions I reach out to the api with the first f… Read more How To Fix Multithreading/multiprocessing With Dictionaries?

Can someone explain this behaviour? import matplotlib.pyplot as plt plt.plot(x=[0.05, 0.1, 0.15], y… Read more Matplotlib Does Not Plot When Named Arguments Are Passed

I have currently this: def download_dropbox(url, pre_file_name): file = url[42:] file = fil… Read more Python 3: How To Create A Text Progress Bar For Downloading Files?

If i get a random line through this code: import random import time with open('Songs.txt',… Read more If I Get A Random Line Is It Possible To Get The Line 2 Below It?

I have a working microeconomic model running with 10 modules 2000 agents, for up to 10 years. The p… Read more Cobb-douglas Functions Slows Running Tremendously. How To Expedite A Non-linear Calculation In Python?

I'm learning BeautifullSoup with Visual Studio Code and when I run this script: import requests… Read more Task Output Encoding In Vscode

I have a question about Django push notifications. In my Django project I have my model for mobile … Read more Django Push Notifications With Device Custom Model

I have a OpenCv Image likewise; opencvImage = cv2.cvtColor(numpy_image, cv2.COLOR_RGBA2BGRA) The… Read more Set White Background For A Png Instead Of Transparency With Opencv

I am trying to generate contour plots on a polar plot and did some quick scripting in matlab to get… Read more Interpolation Differences On Polar Contour Plots In Matplotlib

I have a 3 dimensional plot in matplotlib, the input data consists of 3 lists of x,y,z coordinates … Read more Add A List Of Labels In Pythons Matplotlib

I have another simple question as a follow up from here. Python pandas dataframe sum numbers until … Read more Python Dataframe New Column With Value Based On Value In Other Row

How do I check if a numpy array has a regular shape. In the example below x is a *2 by 3* matrix. H… Read more Check If Numpy Array Has A Normal Shape

I am a python user in the very early stage. I have two data set of temperature over a specific loca… Read more Python- Creating A Table

I want to convert a couple of .csv files to .txt files using python. In my .csv files, I have hundr… Read more How To Convert Csv File To Text File Using Python?

I am writing a program in Python that defines a function that takes a single argument. The function… Read more While Loop Creating

I know that this question was already widely discussed, but I didn't find an answer. I'm ge… Read more Scrapy Importerror: No Module Named Item

I recently installed Python 3.5.2 on Mac OS X El Capitan (Version 10.11.6). I (thought) I configure… Read more Running Python Locally In Aptana Studio 3

I'm using scrapy to build a spider to monitor prices on a website. The website isn't consis… Read more If Statement Within Scrapy Item Declaration

I am making a library for math functions, intended to test and challenge my programming and math sk… Read more How Do I Calculate Sine/cosine/tangent From Cordic, Taylor Series, Or Alternative In Python?

I am using OpenCV in Python to be able to identify only the Leaf presented on the image. I already … Read more How To Extract The Largest Connected Component Using Opencv And Python?

I have been using Python 2.7 for some time now and have recently switched to Python 3. I have alrea… Read more How To Convert String Datatypes To Float In Numpy Arrays In Python 3

I want to have the rows of an array, which are unique. Contrary to numpy's unique function, I w… Read more Numpy Array Show Only Unique Rows

I have a program which sends a text file to a ftp server. The code is: def sendBug(): session … Read more Error Uploading A File To A Ftp Server

I have an odd error that I can't find a solution to. Everytime I start the Anaconda Prompt (ru… Read more Anaconda Prompt Will Not Start _namespacepath

I want to get the multiple bounding boxes co-ordinates and the class of each bounding box and retur… Read more How To Get The Multiple Bounding Box Coordinates In Tensorflow Object-detection Api

I need to create a file in the following format: option1 = 99 option2 = 34 do_it = True ... When I… Read more How To Write Ini-files Without Sections?

serial.write() method in pyserial seems to only send string data. I have arrays like [0xc0,0x04,0x0… Read more Binary Data With Pyserial(python Serial Port)

I have a few functions in my code where it makes much sense (seems even mandatory) to use memoizati… Read more Java: Automatic Memoization

The following code behaves differently in Python 2 vs Python 3: all(map(lambda x,y: x, [1, 2], [1, … Read more Python 2 Vs Python 3 - Difference In Map Behavior With Three Arguments?

I have a pandas data frame with values as below ProcessID1 UserID Date Month Year Time … Read more How To Combine Multiple Columns In A Data Frame To Pandas Datetime Format

Can someone explain me what random_state means in below example? import numpy as np from sklearn.mo… Read more What Is "random-state" In Sklearn.model_selection.train_test_split Example?

It is possible to make the whole frame transparent using SetTransparent(val) in wxpython. But can I… Read more Wxpython: Transparent Panel In Wxpython

On linux redhat: I tried to install jupyter locally: $ pip install jupyter --user and it seems as… Read more After Installing Jupyter Locally, I Can't Run Jupyter Notebook

Okay... I have searched and searched looking for an answer that directly answers my question, but h… Read more Importing And Changing Variables From Another File

I have a df like this, A B C a NaN NaN b NaN NaN c NaN NaN NaN a Na… Read more How To Move Nan Values To End In All Columns

hello i am new to python, i started learning how to work with mysql but the question arose - how to… Read more How To Insert Variables Into Mysql Query

New to python and having which is probably a basic issue when trying to get a loop to work. I have… Read more Beginner Python Loop

Let's say we have a SQL statement that just needs to be completed with the parameters before ge… Read more Python Sqlite How To Get Sql String Statement Being Executed

I have a very simple registration form on my website. My form works, but if a username already exis… Read more Displaying Validation Error Instead Of Default Text Errors In Django Usercreationform

I'm attempting to create a simple dice roller, and I want it to create a random number between … Read more Is There A Random Function In Python That Accepts Variables?

I'm trying to make an event listener to subscribe to a tick (price) event from a FX trading app… Read more How To Subscribe To A .net Event In A Python Listener Using Pythonnet?

I have a list which contains strings representing animal names. I need to sort the list. If I use s… Read more Sort List Of Strings Ignoring Upper/lower Case

As I understand it, a client (the core program) needs to have a common type to allow a plugin, anot… Read more How Does Python Implement Dependency Injection Since It Has No Interfaces?