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在Python程序中操作文件之flush()方法的使用教程

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Release: 2016-06-10 15:11:39
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 flush()方法刷新内部缓冲区,像标准输入输出的fflush。这类似文件的对象,无操作。

Python关闭时自动刷新文件。但是可能要关闭任何文件之前刷新数据。
语法

以下是flush()方法的语法:

fileObject.flush(); 

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参数

  • NA

返回值

此方法不返回任何值。
例子

下面的例子显示了flush()方法的使用。

#!/usr/bin/python

# Open a file
fo = open("foo.txt", "wb")
print "Name of the file: ", fo.name

# Here it does nothing, but you can call it with read operation.
fo.flush()

# Close opend file
fo.close()

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当我们运行上面的程序,它会产生以下结果:

Name of the file:  foo.txt

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