python读写文件数据:with读、写文件
1、with写文件
save_file = "1.txt" str_data = "123a\nbc" with open(save_file, 'a', encoding="utf-8") as f: f.write(str_data)
2、with读文件
# 待读取文件 read_file = "1.txt" with open(read_file, 'r', encoding="utf-8") as f: # 1、read():读取文件全部内容 str_data = f.read() print(str_data) # # 2、readline():逐行读取5行内容 # for i in range(1,5): # # 读取文件一行内容 # str_data = f.readline() # print(str_data) # # 3、readlines():按行读取文件内容到列表 # str_list = f.readlines() # print(str_list) pass