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( )