檔案f1

生成如下字典：

tdict={'A':{1:['a','b'],2:['C']},'B':{2:['a','b']} }
In [22]: tdict={}


In [23]: f=open('f1')


In [24]: while True:
  ...:   line=f.readline().strip()
  ...:   if not line:
  ...:     break
  ...:   pos1=line.split()[0]
  ...:   pos2=line.split()[1]
  ...:   pos3=line.split()[2]
  ...:   if pos1 not in tdict:
  ...:     tdict[pos1]={}
  ...:     tdict[pos1][pos2]=[pos3]
  ...:   else:
  ...:     if pos2 not in tdict[pos1]:
  ...:       tdict[pos1][pos2]=[pos3]
  ...:     else:
  ...:       tdict[pos1][pos2].append(pos3)
  ...:


In [25]: f.close()


In [26]: tdict
Out[26]: {'A': {'1': ['a','2': ['C']},'B': {'2': ['a','b']}}

In [27]: tdict['B']['2']
Out[27]: ['a','b']

以上這篇python 字典套字典或列表的示例就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支援我們。