write a python code to fill the unique series of number in a specific location in an txt file

Help to write a code to fill the series of numbers in a specific location in an txt file.

For example: I am having two files inputfile1.txt and inputfile2.txt

below is my inputfile1.txt content which is having some order_numbers parameter.

<p name = "order_number"></p>
<p name = "task_number"></p>
<p name = "order_number"></p>
<p name = "order_number"></p>
<p name = "taks_number"></p>
<p name = "order_number"></p>
<p name = "task_number"></p>

and the inputfile2.txt is having some unique sequence numbers.

order_number
277
254
635
789

Please help me with the such python code which provides below output.txt file.

I am expecting below output:

<p name = "order_number">277</p>
<p name = "task_number"></p>
<p name = "order_number">254</p>
<p name = "order_number">635</p>
<p name = "taks_number"></p>
<p name = "order_number">789</p>
<p name = "task_number"></p>

Below is my code please check.

def main():
    with open('inputfile1.txt', 'r') as f1, open('inputfile2.txt', 'r') as f2:
        lines1 = f1.readlines()
        lines2 = f2.readlines()

    output_lines = []

    sequence_index = 0
    for line in lines1:
        if 'name = "order_number"' in line:
            output_lines.append(line.strip() + lines2[sequence_index].strip() + "</p>\n")
            sequence_index += 1
        else:
            output_lines.append(line)

    with open('output.txt', 'w') as output_file:
        output_file.writelines(output_lines)

if __name__ == "__main__":
    main()

but the output is not as expected.
my output:

<p name = "order_number"></p>277</p>
<p name = "task_number"></p>
<p name = "order_number"></p>254</p>
<p name = "order_number"></p>635</p>
<p name = "taks_number"></p>
<p name = "order_number"></p>789</p>
<p name = "task_number"></p>

I want below output:

<p name = "order_number">277</p>
<p name = "task_number"></p>
<p name = "order_number">254</p>
<p name = "order_number">635</p>
<p name = "taks_number"></p>
<p name = "order_number">789</p>
<p name = "task_number"></p>

>Solution :

I have reconstruct your idea on kaggle

I have updated some input (removing order_number on inputfile2.txt) .
The output is similiar your expected result.