'10000000000000000' '10100000000000000'
with open("1.csv", mode="w", encoding='cp1251') as w_file: file_writer = csv.writer(w_file, delimiter = ";", lineterminator="\r") file_writer.writerow(['10000000000000000']) file_writer.writerow(['10100000000000000'])
1E+16 1.01E+16
10000000000000000 10100000000000000