Python学习系列之文件操作

with= open(‘文件路径‘,‘打开模式‘) as f:
#PS:python3提供了with语句来帮我们自动调用close方法,所以说无论打开文件是否出错都能自动正确的关闭文件

#提示：以b方式打开时，读取到的内容是字节类型，写入时也需要提供字节类型

f.flush()

代码:
f = open("hello.txt","r")
ret = f.isatty()
f.close()
print(ret)
结果
False

代码:
f = open("hello.txt","r")
ret = f.readable()
f.close()
print(ret)
结果:
True

代码:
f = open("hello.txt","r")
print(f.tell())
f.close()
结果:
0

代码:
f = open("hello.txt","r")
print(f.tell())
f.seek(3)
print(f.tell())
f.close()
结果
0
3

代码:
f = open("hello.txt","r")
print(f.seekable())
f.close()
结果:
True

代码:
f = open("hello.txt","r")
print(f.writable())
f.close()
结果
False

代码:
f = open("wr_lines.txt","r")
print(f.read(3))
f.seek(0)
print(f.read())
f.close()
结果:
112
112233

with open(‘log1.txt‘) as obj1, open(‘log2.txt‘) as obj2: