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
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