python-寫入文件

一、寫入空文件（覆蓋）

# coding=UTF-8
filename = 'test_text.txt'
with open(filename, 'w') as file_object:
    file_object.write("Add a word")

如果寫入文件不存在，open（）將自動創建它

如果文件已存在已有內容，會清空再寫入

 

寫入多行

# 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")

 

 加換行符

# 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、在原有文件上添加內容

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")