python阅读器代码
#coding:utf-8import time
tl = [] #用于存放位置
def readers(path,lines=5,auto=False,times=3):
with open(path,"r") as f:
f.seek(0,2) #移动到末尾
last = f.tell() #记住末尾位置
f.seek(0) #移动到文档首部
for i in range(lines): #先阅读几行
print(f.readline())
tl.append(f.tell()) #记录位置到列表
if auto == True: #自动阅读
while f.tell() < last:
for i in range(lines):
print(f.readline())
time.sleep(times)
else:
while f.tell() < last:
contorl = raw_input("输入N|n向下翻页,M|m向上翻页,Q|q退出阅读! >>>")
if contorl == "q" or contorl == "Q":
print("您选择退出阅读!")
break
elif contorl == "n" or contorl =="N":
for i in range(lines):
print(f.readline()),
tl.append(f.tell())
elif contorl == 'm' or contorl =="M":
if len(tl) == 1:
print("已经是首页啦!")
continue
elif len(tl) == 2:
f.seek(0)
for i in range(lines):
print(f.readline()),
tl.pop()
continue
else:
f.seek(tl[-3])
for i in range(lines):
print(f.readline()),
tl.pop()
print("已经到文章底部了!")
if__name__ == "__main__":
#readers("1.txt",auto=True,lines=6,times=5)
readers("1.txt")
页:
[1]