python数据字典输出

Question

I have a list of key and values in a data dictionary format already

eg

{'key1': 'value1', 'key2': 'value2', 'key3': 'value3'}

How can this be put into a csv output where

key1,key2,key3
value1,value2,value3

Answer 1

>>> d = {'key1': 'value1', 'key2': 'value2', 'key3': 'value3'}
>>> ','.join(d.keys())
'key3,key2,key1'
>>> ','.join(d.values())
'value3,value2,value1'