python 示例

文件close()方法 (File close() Method)

close() method is an inbuilt method in Python, it is used to flush and close the IO object (file). If we close a closed file it has no effect.

close()方法是Python中的内置方法，用于刷新和关闭IO对象(文件)。 如果我们关闭已关闭的文件，则没有任何效果。

Syntax:

句法：

    file_object.close()

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 'NoneType'>, it returns nothing.

此方法的返回类型为<class'NoneType'> ，它什么也不返回。

Example 1:

范例1：

# Python File close() Method with Example
# opening a file in write mode
f = open("Hello.txt", "w")
print("file opened...")
print(f) # prints file details
# closing the file 
f.close()
print("file closed...")

Output

输出量

file opened...
<_io.TextIOWrapper name='Hello.txt' mode='w' encoding='UTF-8'>
file closed...

Example 2:

范例2：

# Python File close() Method with Example
# opening a file in write mode
f = open("Hello.txt", "w")
print("file opened...")
# closing the file
f.close()
# closing a closed file
f.close()
print("file closed...")

Output

输出量

file opened...
file closed...

翻译自: https://www.includehelp.com/python/file-close-method-with-example.aspx

python 示例