python文本读写数据

 # 写方法1
 f  = open('tmp.txt','w')
 f.write('hello world')
 f.close()

 # 写方法2
 with open('tmp.txt','w') as f:
     f.write('hello \n word')

 # 读
 with open('tmp.txt', 'r') as f:
     print(f.read())

 # 逐行读
 with open('tmp.txt','r') as f:
     for line in f.readlines():
         print(line.strip())#strip()去除空行