在Python中,创建多个字典可以通过以下几种方法实现:
1. 使用循环创建多个字典:
num_dicts = 5
dicts = {}
for i in range(num_dicts):
new_dict = {'key1': i * 2, 'key2': i * 3}
dicts[f'dict_{i}'] = new_dict
print(dicts)
2. 使用列表存储多个字典:
dicts = [
{'key1': 1, 'key2': 2},
{'key1': 3, 'key2': 4},
...
]
print(dicts)
3. 使用字典嵌套创建多层字典:
a = {}
a['testkey'] = a.get('testkey', {})
print(a)
4. 使用`collections.defaultdict`创建多层字典:
from collections import defaultdict
a = defaultdict(dict)
a = {}
print(a)
5. 使用字典推导式创建多个字典:
dicts = {i: {j: i * j for j in range(3)} for i in range(3)}
print(dicts)
6. 使用` `运算符合并多个字典:
dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
dictx = {dict1, dict2}
print(dictx)
7. 自定义函数创建多层字典:
def createDict(tupleVals, val):
tempName = dictName = {}
for index, tupleVal in enumerate(tupleVals):
if index == len(tupleVals) - 1:
dictName[tupleVal] = val
else:
if tupleVal not in dictName.keys():
dictName[tupleVal] = {}
dictName = dictName[tupleVal]
return tempName
tupleVals = ('key1', 'key2', 'key3', 'key4', 'key5')
dictName = createDict(tupleVals, ['123', '456'])
print(dictName['key1']['key2']['key3'])
以上方法可以帮助您根据需要创建多个字典。您可以根据具体需求选择合适的方法
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