python学习随笔day3

文档读写

 

#文档内容切片
f=open('abc','r',encoding='utf-8')  #abc是文档名称
count = 0;
for line in f:
    if count==9:
        print("--------------------------------切割线----------------------------------")
        count +=1
        continue
    print(line.strip())
    count +=1

 

 

 

# 进度条
import sys
import time
for i in range(30):
    sys.stdout.write("***")# 进度条结束后打印
    sys.stdout.flush()#进度条实时逐一打印
    time.sleep(0.1)#延迟0.1秒执行