python 示例_带有示例的Python File seek（）方法-蒲公英云

python 示例_带有示例的Python File seek（）方法

python 示例

文件seek()方法 (File seek() Method)

seek() method is an inbuilt method in Python, it is used to set the current file position (or file pointer).

seek()方法是Python中的内置方法，用于设置当前文件位置(或文件指针)。

Syntax:

句法：

file_object.seek(offset)

Parameter(s):

参数：

offset – It specifies the offset to sets the current file location.

offset –指定用于设置当前文件位置的偏移量。

Return value:

返回值：

The return type of this method is , it returns the new file position.

该方法的返回类型为，它返回新文件的位置。

Example:

例：

# Python File seek() Method with Example
# creating a file 
myfile = open("hello.txt", "w")
# writing to the file
res = myfile.write("Hello friends, how are you?")
print(res, "bytes written to the file.")
# closing the file
myfile.close()
# reading content from the file
myfile = open("hello.txt", "r")
print("file content...")
print(myfile.read())
# sets the current file location to 6
print("file content from 6th position...")
myfile.seek(6)
print(myfile.read())
# sets the current file location to 0
print("file content from 0th position...")
myfile.seek(0)
print(myfile.read())
# sets the current file location to 12
print("file content from 12th position...")
myfile.seek(12)
print(myfile.read())

Output

输出量

27 bytes written to the file.
file content...
Hello friends, how are you?
file content from 6th position...friends, how are you?
file content from 0th position...
Hello friends, how are you?
file content from 12th position...
s, how are you?