python 示例_带有示例的Python File close（）方法

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

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python 示例_带有示例的Python File close（）方法

文件close()方法 (File close() Method)

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