add columns to dataframe r loop
for(i in 1:3) { # Head of for-loop
new <- rep(i, nrow(data)) # Create new column
data[ , ncol(data) + 1] <- new # Append new column
colnames(data)[ncol(data)] <- paste0("new", i) # Rename column name
}add a column while iterating rows pandas
mask = (df['Qty'] == 1) & (df['Price'] == 10)
df.loc[mask, 'Buy'] = 1Copyright © 2021 Codeinu
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