Python文件的tell()方法返回文件中的文件读/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
- 该方法返回文件读/写指针的当前位置。
示例
假设’foo.txt‘文件中包含以下行 -
This is 1st line
This is 2nd line
This is 3rd line
This is 4th line
This is 5th line
以下示例显示了tell()方法的用法。
#!/usr/bin/python3
fo = open("foo.txt", "r+")
print ("Name of the file: ", fo.name)
line = fo.readline()
print ("Read Line: %s" % (line))
pos=fo.tell()
print ("current position : ",pos)
# Close opened file
fo.close()
执行上面代码后，将得到以下结果 -
Name of the file: foo.txt
Read Line: This is 1st line
Current Position: 18
