1 寫文件

my_list = ["1", "2", "3"]

my_file = open("myfile.txt", "w")

for item in my_list:
    my_file.write(item + "\n")            
    my_file.writelines(my_list)           // 寫多個

my_file.close()

2 讀文件

my_file = open("myfile.txt", "r")
print(my_file.read())                    // 一次性讀取整個文件
my_file.close()

my_file 
 
= open("myfile.txt", "r")
print(my_file.readline())                // 讀一行
print(my_file.readline())                // 再讀下一行
my_file.close()

3 循環讀取文件

my = open("myfile.txt")

for line in my:
    print(line + " aaa ")

三十四 Python文件操作