将列表中的元素转换为字典

# 示例列表
key_value_list = [['a', 1], ['b', 2], ['c', 3]]

# 转换为字典
result_dict = dict(key_value_list)

print(result_dict)  # 输出: {'a': 1, 'b': 2, 'c': 3}

# 示例键列表和值列表
keys = ['a', 'b', 'c']
values = [1, 2, 3]

# 转换为字典
result_dict = dict(zip(keys, values))

print(result_dict)  # 输出: {'a': 1, 'b': 2, 'c': 3}

key_value_list = [['a', 1], ['b', 2], ['a', 3]]

# 检查并处理重复键
unique_dict = {}
for key, value in key_value_list:
    if key in unique_dict:
        print(f"Warning: Duplicate key '{key}' found. Overwriting previous value.")
    unique_dict[key] = value

print(unique_dict)  # 输出: {'a': 3, 'b': 2}

from collections import defaultdict

key_value_list = [['a', 1], ['b', 2], ['a', 3]]

result_dict = defaultdict(list)
for key, value in key_value_list:
    result_dict[key].append(value)

print(dict(result_dict))  # 输出: {'a': [1, 3], 'b': [2]}