python入门 读写文件

1.打开文件，读取所有内容
file_object = open('thefile.txt')
try:
     all_the_text = file_object.read( )
finally:
     file_object.close( ) 
2.读取固定字节
file_object = open('abinfile', 'rb')
try:
    while True:
         chunk = file_object.read(100)
        if not chunk:
            break
         do_something_with(chunk)
finally:
     file_object.close( ) 
3.读取文件一行
f = open("D:\\test\\BlueSoftSetup.log","r")
try:
    while True:
        line = f.readline()
        if line:
            print(line)
        else:
            break;
finally:
 
    f.close();
 
4.写文件
写文本文件
output = open('data', 'w')
 写二进制文件
output = open('data', 'wb')
 追加写文件
output = open('data', 'w+')
 写数据
file_object = open('thefile.txt', 'w')
file_object.write(all_the_text)
file_object.close( )