tell()方法返回的文件内的文件读/写指针的当前位置。

语法

以下是tell()方法的语法：

fileObject.tell()

参数

NA

返回值

此方法返回该文件中读出的文件/写指针的当前位置。

例子

下面的例子显示了tell()方法的使用。

#!/usr/bin/python # Open a file fo = open("foo.txt", "rw+") print "Name of the file: ", fo.name # Assuming file has following 5 lines # This is 1st line # This is 2nd line # This is 3rd line # This is 4th line # This is 5th line line = fo.readline() print "Read Line: %s" % (line) # Get the current position of the file. pos = fo.tell() print "Current Position: %d" % (pos) # Close opend file fo.close()

当我们运行上面的程序，它会产生以下结果：

Name of the file: foo.txt Read Line: This is 1st line Current Position: 18