add variables to column pandas in javascript

To add a new column with a variable to a Pandas dataframe in JavaScript, first you need to define the variable and then assign it to a new column.

Assuming you already have a Pandas DataFrame named df, here's an example of how to do this:

index.tsx
// Define the variable
let variableValue = 42;

// Add the new column with the variable to the dataframe
df['new_column_name'] = variableValue;
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This will add a new column named new_column_name with the value of the variableValue in each row of the dataframe. If you want to add a different value for each row, you can define the variable as an array and assign it to the new column instead:

index.tsx
// Define an array of values
let variableArray = [1, 2, 3, 4];

// Add the new column with the array to the dataframe
df['new_column_name'] = variableArray;
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This will add a new column named new_column_name with the values [1, 2, 3, 4] in each row of the dataframe.