Python3 读写utf-8文本文件

python默认用系统字符集读取文件，例如windows下就会用GBK方式解码，若是要读取utf-8编码文本文件，须要指定文件使用的字符集

with open('testRead.txt', 'r', encoding='utf-8') as f:
    for each_line in f:
        Pass
with open('testWrite.txt', 'w', encoding='utf-8') as f:
    f.write('写入的内容'+ '\n')  # 若是写入后要换行就要加\n