python 示例

文件關閉屬性 (File closed Property)

closed Property is an inbuilt property of File object (IO object) in Python, it can be used to check whether a file object (i.e. a file) is closed or not, this is a read-only property and returns a Boolean value (True – if file is closed, False – if file is not closed).

關閉屬性是Python中文件對象(IO對象)的內置屬性，可用于檢查文件對象(即文件)是否關閉，這是只讀屬性，并返回布爾值(真) –如果文件已關閉，則為False –如果文件未關閉)。

Syntax:

句法：

file_object.closed

Parameter(s):

參數：

• None

  沒有

Return value:

返回值：

The return type of this method is <class 'bool'>, it returns a Boolean value.

該方法的返回類型為<class'bool'> ，它返回一個布爾值。

Example:

例：

# Python File closed Property with Example# opening files in various modes file1 = open("myfile1.txt", "w") file2 = open("myfile3.txt", "a") file3 = open("myfile4.txt", "wb")# checking files are closed or not print("Before closing the files...") print("file1.closed: ", file1.closed) print("file2.closed: ", file2.closed) print("file3.closed: ", file3.closed)# closing the files file1.close() file2.close() file3.close()# checking files are closed or not print("After closing the files...") print("file1.closed: ", file1.closed) print("file2.closed: ", file2.closed) print("file3.closed: ", file3.closed)

Output

輸出量

Before closing the files... file1.closed: False file2.closed: False file3.closed: False After closing the files... file1.closed: True file2.closed: True file3.closed: True

翻譯自: https://www.includehelp.com/python/file-closed-property-with-example.aspx

python 示例

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