在使用dpath时如何避免KeyError？

import dpath.util

data = {
    'a': {
        'b': {
            'c': 1
        }
    }
}

# 安全地获取值，如果路径不存在则返回None
value = dpath.util.get(data, '/a/b/c', default=None)
print(value)  # 输出: 1

# 尝试获取不存在的路径，返回默认值None
value = dpath.util.get(data, '/a/b/d', default=None)
print(value)  # 输出: None

import dpath.util

data = {
    'a': {
        'b': {
            'c': 1
        }
    },
    'x': {
        'y': {
            'z': 2
        }
    }
}

# 搜索路径并返回第一个匹配项的值
result = dpath.util.search(data, '/a/b/c')
print(result)  # 输出: 1

# 搜索不存在的路径，返回None
result = dpath.util.search(data, '/a/b/d')
print(result)  # 输出: None

import dpath.util

data = {
    'a': {
        'b': {
            'c': 1
        }
    }
}

try:
    value = dpath.util.get(data, '/a/b/c')
except KeyError:
    value = None
print(value)  # 输出: 1

try:
    value = dpath.util.get(data, '/a/b/d')
except KeyError:
    value = None
print(value)  # 输出: None

import dpath.util

data = {
    'a': {
        'b': {
            'c': 1
        }
    }
}

path = '/a/b/c'
if dpath.util.exists(data, path):
    value = dpath.util.get(data, path)
else:
    value = None
print(value)  # 输出: 1

path = '/a/b/d'
if dpath.util.exists(data, path):
    value = dpath.util.get(data, path)
else:
    value = None
print(value)  # 输出: None