# coding=UTF-8 filename = ‘test_text.txt‘ with open(filename, ‘w‘) as file_object: file_object.write("Add a word")
如果写入文件不存在，open（）将自动创建它
如果文件已存在已有内容，会清空再写入
# coding=UTF-8 filename = ‘test_text.txt‘ with open(filename, ‘w‘) as file_object: file_object.write("Add a word") file_object.write("Add two words")
加换行符
# coding=UTF-8 filename = ‘test_text.txt‘ with open(filename, ‘w‘) as file_object: file_object.write("Add a word\n") file_object.write("Add two words\n")
用‘a’
# coding=UTF-8 filename = ‘test_text.txt‘ with open(filename, ‘a‘) as file_object: file_object.write("lalala\n") file_object.write("hahaha\n")
原文：https://www.cnblogs.com/qianjinyan/p/13675512.html