方法1:
d = {}
lst = [(1,'apple'),(2,'orange'),(1,'compute')]
for k,v in lst:
if k not in d:
d[k]=[]
d[k].append(v)
print(d) # {1: ['apple', 'compute'], 2: ['orange']}
方法2
使用defaultdict
d = {}
lst = [(1,'apple'),(2,'orange'),(1,'compute')]
# 使用defaultdict
from collections import defaultdict
d = defaultdict(list)
for k,v in lst:
d[k].append(v)
print(d) # defaultdict(<class 'list'>, {1: ['apple', 'compute'], 2: ['orange']})