Write text to file in Python [closed]

Answer 1

You are missing f.close()

.....
for item in os.listdir(src):
        s = os.path.join(src, item)
        print s
        f.write(s)
f.close() # <- add this line
.....

Answer 2

Best use a with block which will handle the closing of the file for you:

def test(src):
    with open('test.txt','w') as f:
        f.write("testabc")
        for item in os.listdir(src):
            s = os.path.join(src, item)
            print s
            f.write(s)