Python 2.7:立即写入文件 [英] Python 2.7 : Write to file instantly

问题描述

我意识到当我使用 python 写入文件时，它会等到我的 Python 文件结束才执行它:

I realized that when I write into a file using python it wait until the end of my Python file to execute it:

outputFile = open("./outputFile.txt","a")
outputFile.write("First")
print "Now you have 10sec to see that outputFile.txt is still the same as before"
time.sleep(10)
outputFile.write("Second")
print "Now if you look at outputFile.txt you will see 'First' and 'Second'"

我该如何让 python 立即写入输出文件?

How am I suppose to make python write instantly to the output file?

推荐答案

您可以使用 flush() 或者您可以将文件对象设置为无缓冲.

You can use flush() or you can set the file object to be unbuffered.

使用该参数的详细信息 open() 这里.

Details on using that parameter for open() here.

所以你会改变你的公开电话 -

So you would change your open call to -

outputFile = open("./outputFile.txt", "a", 0)

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