Regex to split a long expressions string into an array of individual expressions

Issue I have an expression string from Angular [ngClass] directive containing multiple expressions with their corresponding key separated by a comma. ‘background_orange’:row.columnname.split(‘,’)[4] == 1,’red:color’:test===’testname’,’yellow:color’:test===’testname’ When I try to split the above expression string into an array of individual expression with

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Split data into train and test stratified on label

Issue I have a data frame (df) with two columns (Numbers and Letters). See reproducible example: Numbers<- c(2.370653,3.811336,5.255120, 6.501197,7.848100,9.343938,10.843479,12.164387,13.476807,14.922644,16.419281,17.664224,19.112835,20.660367,21.962732,23.213675) Letters<-c("a","b","c","c","d","a","b","d","d","a","a","c","b","c","c","c") df <- as.data.frame(cbind(Numbers,Letters)) I want randomly to split the data frame into two date frames of equal size and with

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plotting Iris Classification

Issue The code below classifies three groups of Iris through the Decision Tree classifier. import pandas as pd from sklearn import datasets from sklearn.model_selection import train_test_split, cross_val_score, KFold from sklearn.tree import DecisionTreeClassifier iris = datasets.load_iris() dataset = pd.DataFrame(iris[‘data’], columns=iris[‘feature_names’]) dataset[‘target’]

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