f=open('test','r',encoding='utf8')
data=f.readlines()
# f.seek()
# f.tell()
# f.write()
number=0
for i in data:
print(i)
with open('java','w',encoding='utf-8') as f:
f.write('rter')
#裝飾器 瞭解一下
import time def show_time(fun): def test(): start=time.time() fun() #這裏算是一個拐點 end=time.time() print('%s'%(end-start)) return test @show_time #fun=show_time(op1) def op1(): print('ere') time.sleep(2) @show_time def op2(): print('ere')