how to split only train data code example

Example 1: how to split train and test data in r

library(caTools)
sample <- sample.split(data$y, SplitRatio = 0.7)
train_data <- subset(data, sample == TRUE)
test_data <- subset(data, sample == FALSE)

Example 2: train-test split code in pandas

df_permutated = df.sample(frac=1)

train_size = 0.8
train_end = int(len(df_permutated)*train_size)

df_train = df_permutated[:train_end]
df_test = df_permutated[train_end:]