f1 = open('E:/111.txt','r',buffering=4096)
f2 = open('E:/222.txt','r',buffering=4096)
list = f1.readlines()
print(list)
list1 = f2.readlines()
for i in list:
li = re.split(' ',i)
li = re.sub('\n','',i)
print(li[1])
z = zip(li[0])
print(list)
s = set(list1)
print(s)
s_len = len(s)
for i1 in li:
print(i)
i_len = len(i)
k_len = len(k)
s1 = s.add(i)
s2 = s.add(k)
print(s1)
if
# print(i_len)
s = s.add(i)
print(s)
print(s)
if (len(s)-i_len==i_len):
print(i)
else:
pass
for file in f1.readlines():
print(file)
ref = file
print(ref)
for i in f2.readlines():
k = re.findall('','')
a = re.split(' ',i)
print(ref)
for l in a:
f = open('a.txt','rb')#必须以二进制读
f.seek(3,1)#第二个参数相对位置
f.seek(-3,2)#第二个参数倒数光标
读取文件最后一行的日志:方法
f1 = open('a.txt','rb')
# li = f1.readlines()
for i in f1:
offset = -5
while 1:
f1.seek(offset,2)#移动光标到最后倒着读
f = f1.readlines()
if len(f) > 1:
print('文件最后一行是%s'%(f[-1].decode('utf8')))
break
else:
offset*=2
python文件操作方法
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转载自blog.csdn.net/weixin_41701299/article/details/80963888
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