Append a text to file in Python

2018-06-14 22:13:45

This question already has an answer here:

How do you append to a file? 8 answers

使用模式a而不是w追加到文件中：

with open('text.txt', 'a', encoding='utf-8') as file:
    file.write('Spam and eggs!')

As for your first question, googling will turn up several ways. Try this earlier SO question:

Pythonic way to test if a file exists?

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