请用Python语言编程实现由十进制数到二进制数的转换，要求：程序的每一行代码后有注释语句说明代码功能；
有输入提示、输出提示；
使用循环语句；
谢谢各位大神们大佬们！！！
#!/usr/bin/python
# -*- coding:utf-8 -*-
# @File : Dec_To_Bin.py
"""
description
"""
def dec2bin(string_num):
num = int(string_num)
mid = []
while True:
if num == 0:
break
num, rem = divmod(num, 2)
mid.append(rem)
return ''.join([str(x) for x in mid[::-1]])
if __name__ == '__main__':
anum = raw_input(u'请输入要转换的数字：')
print u'该数字转换为二进制后是：{}'.format(dec2bin(anum))
# -*- coding:utf-8 -*-
# @File : Dec_To_Bin.py
"""
description
"""
def dec2bin(string_num):
num = int(string_num)
mid = []
while True:
if num == 0:
break
num, rem = divmod(num, 2)
mid.append(rem)
return ''.join([str(x) for x in mid[::-1]])
if __name__ == '__main__':
anum = raw_input(u'请输入要转换的数字：')
print u'该数字转换为二进制后是：{}'.format(dec2bin(anum))
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