with open("D:/Temp/a.txt", mode='w', encoding='utf-8') as f: f.write('hello') with open("D:/Temp/a.txt", mode='r', encoding='utf-8') as f: content =f.read() print(content)
一般用a+比较好
Truncate:覆盖
Initial Position:初始位置
一些功能:
seek(X):光标订到X个字节
read(X):读X个字符,默认全部
tell():告诉你光标的位置
print(bytes('你好',encoding='gbk').decode('gbk'))