Python learning files Create a write program

#!/usr/bin/env python
Import OS#导入功能模块
url = "/tmp/"#变量定义
def check ():#函数定义
whileTrue:#一直循环 prompt the user to enter the correct file name to create
Os.system ("cd/tmp")
d_com=raw_input ("please input filename")#将用户输入的值赋给变量做判断
if os.path.exists (url+d_com) = = True:#调用功能模块判断文件是否存在
print "error!! File had existed "#输出判断结果
Continue#存在时重新输入文件名
Else:
While True:#当要创建的文件不存在
M = open (url+d_com, ' a ')# Prompt the user to enter content into the created file
A = raw_input ("Piease input what ' s want Add")
m.write (A)#将内容写入创建的文件
M.flush
M.close ()
if A = = "":
exit ()#当输入为空时代表输入结束, exit the function.

Check ()

Python learning files Create a write program