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( )

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