Typically, you won’t be entering data directly into an array. Instead, you’ll be importing the data from somewhere else.
We’re able to transform CSV (comma-separated values) files into arrays using the np.genfromtxt() function:
Consider the following CSV, sample.csv,
We can import this into a NumPy array using the following code:
Note that in this case, our file sample.csv has values separated by commas, so we use delimiter=',', but sometimes you’ll find files with other delimiters, the most common being tabs or colons.
Once imported, this CSV will create the array
Instructions
You found that inputting the student’s scores into an array by hand was too time-consuming. Import the student’s scores on the second test from the CSV test_2.csv into an array.
Save the array with the name test_2.