【Python】遍历字典的同时删除某个 key

需求：遍历字典时，删除某个 key

正常情况下是不能直接删除的，需要借助其他方式：

# coding=utf-8

data = {"name": "rose", "age": 19}

# 遍历字典并删除某个 key
# 报错：RuntimeError: dictionary changed size during iteration
for k, v in data.items():
    if k == "name":
        data.pop(k)

优化后：

print(list(data.items()))   # [('name', 'rose'), ('age', 19)]

for k, v in list(data.items()):
    if k == "name":
        data.pop(k)
print(data)