python-写入文件
一、写入空文件(覆盖)
# 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
写入多行
# 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")
二、在原有文件上添加内容
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")
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