简简单单丶丶

摘要： 强调：只有t模式下read(n)，n代表字符个数，除此以外都是以字节为单位with open('a.txt',mode='rt',encoding='utf-8') as f: res=f.read(4) print(res)with open('a.txt',mode='rb') as f: re 阅读全文