python入門 讀寫檔案

1.開啟檔案，讀取所有內容

file_object = open('thefile.txt')
try:
all_the_text = file_object.read( )
finally:
file_object.close( )

2.讀取固定位元組

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.讀取檔案一行

f = open("D:\\test\\BlueSoftSetup.log","r")

try:

while True:

line = f.readline()

if line:

print(line)

else:

break;

finally:

f.close();

4.寫檔案

寫文字檔
output = open('data', 'w')

寫二進位檔案
output = open('data', 'wb')

追加寫檔案
output = open('data', 'w+')

寫資料
file_object = open('thefile.txt', 'w')
file_object.write(all_the_text)
file_object.close( )

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