Python 如何向文件中追加文字

Jinku Hu 2020年6月25日 2018年7月19日
Python 如何向文件中追加文字

你可以通过指定文件打开模式 a 或者 a+ 来打开文件并且随后向其增加文字。

destFile = r"C:\Test\Test.txt"
with open(destFile, 'a') as f:
    f.write("some appended text")

这个例子中,在文件 C:\Test\Test.txt 的最后一个字符后面追加了字符串 some appended text,如果原文件是以 this is the last sentence 结尾的,那么追加文字后,它就变成了 this is the last sentencesome appended text


如果你更喜欢在新的一行中添加文字,那么你就需要在原文件的后面首先加上换行符 \r\n 来确保新增加的文字是在新的一行中。

destFile = r"C:\Test\Test.txt"
with open(destFile, 'a') as f:
    f.write("the first appended text\r\n")
    f.write("the second appended text\r\n")
    f.write("the third appended text\r\n")
Author: Jinku Hu
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Founder of Jinku has worked in the robotics and automotive industries for over 8 years. He sharpened his coding skills when he needed to do the automatic testing, data collection from remote servers and report creation from the endurance test. He is from an electrical/electronics engineering background but has expanded his interest to embedded electronics, embedded programming and front-/back-end programming.


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