csv文件的某行修改方法

Question

想把第一行的1234换成4556，这种怎么操作，用Python

Answer 1

import scv
data = [4,5,5,6]
with open(r'E:\1.csv','w') as f:
    csv_writer = csv.writer(f)
    for i in data:
        csv_writer.writerow(i)