Python 對文件內容迭代 按字節處理

def process(string):
    print 'Processing: ',string
f=open(r'D:\\ruanjian\\Python\\程序\\1.txt')
while True:
    char=f.read(1)
    if not char:break
    process(char)
f.close()

Processing:  t
Processing:  h
Processing:  i
Processing:  s
Processing:   
Processing:  i
Processing:  s
Processing:  n
Processing:  '
Processing:  t
Processing:   
Processing:  a
Processing:   
Processing:  h
Processing:  a
Processing:  i
Processing:  k
Processing:  u