Is there a constraint that restricts my generic method to numeric types?

Can anyone tell me if there is a way with generics to limit a generic type argument T to only: Int16 Int32 Int64 UInt16 UInt32 UInt64 I'm aware of the where keyword, but can't find an interface...

Why is 'this' a pointer and not a reference?

I was reading the answers to this question C++ pros and cons and got this doubt while reading the comments. programmers frequently find it confusing that "this" is a pointer but not a reference....

How to implement the factory method pattern in C++ correctly

There's this one thing in C++ which has been making me feel uncomfortable for quite a long time, because I honestly don't know how to do it, even though it sounds simple: How do I implement...

Python function overloading

I know that Python does not support method overloading, but I've run into a problem that I can't seem to solve in a nice Pythonic way. I am making a game where a character needs to shoot a variety...

python pandas: apply a function with arguments to a series

I want to apply a function with arguments to a series in python pandas: x = my_series.apply(my_function, more_arguments_1) y = my_series.apply(my_function, more_arguments_2) ... The...

Documentation for PyCFunction_New / PyCFunction_NewEx

I'm struggling to understand some PyCXX code (C++ Python wrapper) that revolves around PyCFunction_New. Could someone explain how this function works? (I can't figure it out from the CPython...

Reading csv with separator in python dask

I am trying to create a DataFrame by reading a csv file separated by '#####' 5 hashes The code is: import dask.dataframe as dd df = dd.read_csv('D:\temp.csv',sep='#####',engine='python') res =...

Dynamic URL with variable django template

I'm trying to build a dynamic list of urls, based on a list of pages. In my urls.py, the whole application is behind the namespace base: urlpatterns = patterns('', ...

Why C++ doesn't support named parameter

Previously, I worked with python. In Python I used named parameter(keyword argument) for function calls. Wikipedia page about named parameter tells that C++ doesn't support it. Why C++ doesn't...

Django Rest Framework - AssertionError Fix your URL conf, or set the `.lookup_field` attribute on the view correctly

I'm trying to return as single object (not a queryset) that is specific to a user without them having to specify an identifier/pk within the requested URL. Each user has an organisation FK. i.e....

How to display image in wxpython?

Please help me with this code. I want to display image in the frame : import wx import os class frame(wx.Frame): '''frame class that display an image''' def __init__(self, image,...

User defined constructor for Fortran derived type instance

This is my second question related to Fortran (I use C++, so forgive me my way of thinking). I want to use OOP, to say, derived type in Fortran whenever appropriate. In C++, you can use user...

Discord.py API Bot: 2 arguments in function not working

I have written a function called spam for my Discord bot using the discord.py API which should take an argument of msg and amount. msg is just a string and amount is an integer (the amount of...

Bash: Numeric Argument Required

My code is as follows: word=$1 if [ $word = "night" ] then redshift -O 1300 > /dev/null elif [ $word = "movie" ] then redshift -x > /dev/null else redshift -O 2800 >...

Vue-cli 3: "command failed: npm install --loglevel error"

Every time I try to create a new project (vue create my-project), I get this error: ERROR : command failed: npm install --loglevel error I'm on PC / Windows 10, Vue-cli 3.2.1, Node 8.11.3, Npm...

Pre-Standard C Function Header Syntax After Explicit Forward-Declaration of Function

I'd like information on the behavior of pre-standard "K&R-style" function declaration syntax when used in conjunction with explicit function protoypes as introduced by ANSI. Specifically, the...

Label Smoothing in PyTorch

I'm building a ResNet-18 classification model for the Stanford Cars dataset using transfer learning. I would like to implement label smoothing to penalize overconfident predictions and improve...

Structure of initial state for stacked LSTM

What is the required structure for an initial state on a multilayer/stacked RNN in TensorFlow (1.13.1) using the tf.keras.layers.RNN API? I tried the following: lstm_cell_sizes = [256, 256,...

Prevent Sharing of Y Axes in Seaborn Relplot

I'm having trouble getting seaborn's relplot function to plot with different y axes on each row (while sharing x axes per column). I can see that both the FacetGrid and catplot methods in seaborn...

AirFlowException - Python_Callable must be callable

I made a small change to an existing workflow, and it has broken airflow. Here is the code: dag_name = platform + "_" + report['table'] dag = DAG( dag_name, catchup=True, ...

PyCharm warns about unexpected arguments for SQLAlchemy User model

I'm working with Flask-SQLAlchemy in PyCharm. When I try to create instances of my User model by passing keyword arguments to the model, PyCharm highlights the arguments with an "Unexpected...

Django form password TypeError: __init__() got an unexpected keyword argument 'widget'

I have this code in my models.py: from django import forms class user_Account(models.Model): password = models.CharField( widget=forms.PasswordInput(), ...

trouble with using tokenizer.encode_plus

#jupyter notebook I'm trying to study BERT Classifier with https://colab.research.google.com/drive/1pTuQhug6Dhl9XalKB0zUGf4FIdYFlpcX#scrollTo=2bBdb3pt8LuQ In that colab, starting with "Tokenize...

Openpyxl can't read xlsx file, but if i save the file, it opens

So, I tried to open an excel file with openpyxl with this line wb_bs = openpyxl.load_workbook(filename=filepath) And got this...

seaborn FutureWarning: Pass the following variables as keyword args: x, y

I want to plot a seaborn regplot. my code: x=data['Healthy life expectancy'] y=data['max_dead'] sns.regplot(x,y) plt.show() However this gives me future warning error. How to fix this...

python-igraph union with current graph issue

I have a graph subclass. My attempt is to append a subgaph (also an instance of igraph.Graph) as an union import igraph class Graph(igraph.Graph): def __init__(self, param_1, param_2): ...

Function invocation failed due to no matching argument type. web3.py, Python

I'm trying to swap tokens using swapExactTokensForTokens() (Pancakeswap Router function). Here is my code def swapTokens(): amountIn = (w3.toWei(0.00001,'ether')) amount1 =...

LDA visualization [ import_optional_dependency() got an unexpected keyword argument 'errors' ]

i got a error message while visualizing LDA model import pyLDAvis import pyLDAvis.gensim_models pyLDAvis.enable_notebook() vis = pyLDAvis.gensim_models.prepare(ldamodel,corpus,...

Why do I get a 'FutureWarning' with pandas.concat?

Does anyone meet this FutureWarning when you use Tiingo+pandas_datareader? The warning is like: python3.8/site-packages/pandas_datareader/tiingo.py:234: FutureWarning: In a future version of...

Unable to print the sheet names of the ".xlsm" excel file using Python 3.10 & Pandas

Snippet: import pandas as pd file = "C:\\Users\\Len\\Desktop\\work\\student.xlsx" file1 = "C:\\Users\\Len\\Desktop\\work\\temp.xlsm" xl = pd.ExcelFile(file) print(xl.sheet_names) xlm =...