Input a 4*3 table, calculate the sum of each row.

Sure, here is a Python code that can calculate the sum of each row in a 4*3 table:

table = [[1, 2, 3],
         [4, 5, 6],
         [7, 8, 9],
         [10, 11, 12]]

row_sums = []
for row in table:
    row_sum = sum(row)
    row_sums.append(row_sum)

print(row_sums)

Output:

[6, 15, 24, 33]

In the above code, `table` is a 4*3 table (a list of lists) with 4 rows and 3 columns. We then iterate over each row in the table, calculate the sum of the row using the `sum()` function, and append the row sum to a new list called `row_sums`. Finally, we print out the `row_sums` list, which contains the sum of each row in the table.