how can i read .csv file and save selected column in database.
I am having a .csv file like this A, B, C, D 33, 32, 36, 33 67, 34, 37 ,33
So i need to save column B And C Value in new table in database after i compare with the existing table in database
StreamReader reader = newStreamReader(Fi...
I have a project that using SQLAlchemy and it connects to two different databases and both have same table name sample_table. Here is the current setup:
# In config/base.py
from sqlalchemy import create_engine
from sqlalchemy_utils import database_exists, create_database
...
...
...
db1_engine...
Hi this is code that runs through a series of probability distributions of articles (stored in doc_topic_ and calculates the average KL divergence of a range of articles (baseline_entropy) and then jumps forwards or backwards (depending if a jump is possible) to calculate a jump_entropy.
These ...
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I am Math major and new to programming. I have some experience in Python and C. I have guessed a formula that may be true, to be more sure I need to check it using a program. Here is the formula -
Every positive integer can be written as sum of one square number , one pentagonal number and a...
def add(a,b):
for i in xrange(a-1,b):
box[i]+=1
def count(k):
if box.count(k)!=0:
box.index(k)
return len(box)-box.index(k)
else:
return 0
from sys import stdin,stdout
box=[0]*int(stdin.readline()) #input the number of boxes of chocolate
for i in xrange...
The application uses NCalc to execute diverse calculations.
The 'natural' way to write powers using a computer is using the ^ symbol. However, NCalc already uses it as bitwise or.
I use the following function to parse calculations and convert it to the Pow(a,b) format.
Private Function _re...gameKey(long id) is authentication function of MMO game server. When someone want to play with friends, he sends requst to server, server calls gameKey() and returns it JSON to player via API. When friend establishes connection, he sends game id and his key, server calls gameKey(id), where id is ...
I've written a Vigenere decypher and I would like to have some opinions before I try to refactor it into more OOP style with classes and such.
#include <bits/stdc++.h>
#define Rep(i,a,n) for(int i = a; i < n; i++)
#define rep(i,n) Rep(i,0,n)
using namespace std;
int main(){
string key, line,...
Anyone can help me.
I'm trying to implement the Stick-breaking Process on the Latent dirichlet allocation to extract the aspects"features" from the online reviews, BUT the problem is that while executing the algorithm, digital values are produced rather than "words" or features.
ANY HELP, T...
I've implemented the sieve of Eratosthenes in Python 3 as follows:
def sieve_of_eratosthenes(n):
is_prime = [True] * (n+1)
is_prime[0] = False
is_prime[1] = False
p = 0
while True:
for i, prime in enumerate(is_prime):
if prime and i > p:
...
I've designed a basic Tetris game, and implemented it in Java language. I'll use it for demonstrating software engineering, designing. I'll re-implement it in many different programming language, in different platforms. Thus, good concept is very important.
Goals:
Follow general OOP principles...
I have a scenario where I need to create dynamic component which I have done with compileModuleAndAllComponentsAsync of Compiler of angular 6.
viewChangeMethod(view: string) {
let template = `<span>${view} </span>`;
const tmpCmp = Component({ template: template })(class { });
this._...
I am a beginner in Python and I am yet to move on from the basics to things like OOP.I wrote all of this code (Python 3) in an hour or so for a simple countdown timer.Although some parts of it are seemingly excessive,is the core of the code pythonic enough or are there better ways of structuring ...
I'm working on my php/sql register/login form and i've recently changed my code because someone recommended to me to do it and now everytime i run it i get a error 500 from my azure server. I hope you guys can help me!
<?php
/**
* Created by PhpStorm.
* User: Thomas Adema
* Date: 15-7-2018
*...
Here are two simple classes - Digit class maintains digit behaviour - primarily flipping animations, and Clock class handles everything that is related to time data - formatting.
I'm gonna use this code for job application, please tell me how good is it and what do you think of it. Thanks!
Here...
I'm a front end dev practicing leetcode problems so I can be better at programming challenges, something I have not done in a very long time. I have a JS solution for a Hamming Distance problem on LeetCode, it passes a bunch of test cases but fails on one particular one and I'm trying to understa...
Task:
For creating this challenge on Codewars I need a very performant function that calculates Moore and Von Neumann Neighborhood in a N-dimensional array. This function will be called about 2000 times
The basic recursive approach:
- calculate the index span influenced by the distance
- if th...
Given the following artificially generated data:
t_steps = 30
data = np.array([
np.arange(t_steps) * .05,
np.arange(t_steps) * .1,
np.arange(t_steps) * .2,
np.arange(t_steps) * .3
])
I find the time-step the each line of data has passed a threshold. If it does not pass the gi...
Problem
Two folders having files with nameEDisp that store lines starting with hex codes.
Print those hex codes that overlap in both folders.
Solution
import os
import sys
import re
def process_cache(cache):
event_code_set = set()
for file_name, multi_line_content in cache.items():...
I'm going to need help on a boot camp assignment where we have to create an interface with the method declarations of the rectangle's area and perimeter, and a class that implements it.
So far, the interface is done, like this:
interface Assignment2_3B {
public void area();
public void perimete...
Given a string, reverse only the vowels present in it and print the
resulting string.
Input:
First line of the input file contains an integer T denoting the
number of test cases. Then T test cases follow. Each test case has a
single line containing a string.
...
I come from the R language and I gradually switch to Python (Numpy and Pandas). I coded this python code for fun to solve a Sudoku grid. Could you tell me if my code is pythonic enough? For example, did I use the numpy functions correctly. How to make the code more readable?
Thank you so much!
...
Reading & processing a fairly large csv using Pandas and Python 3.7. Header names in the csv have periods in them ('full stops', Britons say). That's a problem when you want to address data cells by column name.
So I decided on the approach below. First, a wee test.csv:
"name","birth.place","...
The following program converts a string to a double, and checks for errors. It uses the strtod() function to do the conversion, and follows the example given for the strtol() function from the man page to do the error checking.
As an example, the program is executed as follows:
$ ./a.out 123.4...
The following game was a excercise in the PPP book by Stroustrup:
Implement a version of the game "Hunt the Wumpus".
Hunt the Wumpus" (or just "Wump") is a simple (non-graphically) computer game originally invented by Gregory Yob.
The basic premise is that a rather smelly monster lives i...
I wanted to write a code that each time I will press some button in my menu, a numpy image array will somehow be created, and this image will show up in a new window.
So the following code is the same purpose, but with the same numpy image array for all new windows (for simplifying).
Which mean...
I am looking for a better way for inserting/selecting data from/to a postgresql database. What I had before was a class with couple of methods which basically opens a connection and cursor and kept them open until the whole process that calls the functions was over, the reason I use this one is b...
