python 示例

文件tell()方法 (File tell() Method)

tell() method is an inbuilt method in Python, it is used to get the current file position in the file stream.

tell()方法是Python中的内置方法，用于获取文件流中的当前文件位置。

Syntax:

句法：

file_object.tell()

Parameter(s):

参数：

• It does not accept any parameter.

  它不接受任何参数。

Return value:

返回值：

The return type of this method is <class 'bool'>, it returns an integer value which is the file position in the file stream.

此方法的返回类型为<class'bool'> ，它返回一个整数值，该值是文件流中的文件位置。

Example:

例：

# Python File tell() Method with Example# creating a filemyfile1 = open("hello1.txt", "w")# printing the file positionprint("myfile1.tell(): ", myfile1.tell())# writing the content in the file myfile1.write("Hello! How are you?")# printing the file positionprint("myfile1.tell(): ", myfile1.tell())# writing the content in the file myfile1.write("\nI am good, what about you?")# printing the file positionprint("myfile1.tell(): ", myfile1.tell())# closing the filemyfile1.close()# Opening file in read modemyfile1 = open("hello1.txt", "r")# printing the file positionprint("After opening the file in read mode...")print("myfile1.tell(): ", myfile1.tell())# reading the contentprint("File's content is...")print(myfile1.read())# printing the file positionprint("After reading the file...")print("myfile1.tell(): ", myfile1.tell())# closing the filemyfile1.close()

Output

输出量

myfile1.tell():  0myfile1.tell():  19myfile1.tell():  46After opening the file in read mode...myfile1.tell():  0File's content is...Hello! How are you?I am good, what about you?After reading the file...myfile1.tell():  46

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python 示例