readline() is skipping lines in source file

I have a .txt file that I created with multiple lines.

When I run a for loop, with a count accumulator, it skips lines.

It skips the top line, and starts with the second, prints the fourth, the sixth, etc.

What is it I'm missing?

def main():
    # Open file line_numbers.txt
    data_file = open('line_numbers.txt', 'r')

    # initialize accumulatior
    count = 1
      

    # Read all lines in data_file
    for line in data_file:
        # Get the data from the file
        line = data_file.readline()

        # Display data retrieved
        print(count, ": ", line)

        # add to count sequence
        count += 1