Python入门 io篇

佚名 6年前 (2019-04-09) 随笔 530人围观抢沙发百度已收录

简单demo

with open('d:/pydemo/pythonStart/fun1.py', 'r') as f:
    #print(f.read())
    while True:
        line = f.readline()
        #print(line)
        if line == None or line == "" :
            break;
        # strip是去除行尾的\n，不然print会输出一行 \n又空一行
        print(line.strip())

文件读写模式

'r' open for reading (default)
'w' open for writing, truncating the file first
'x' open for exclusive creation, failing if the file already exists
'a' open for writing, appending to the end of the file if it exists
'b' binary mode
't' text mode (default)
'+' open a disk file for updating (reading and writing)