如何检查变量是否是Python中的字典? [英] How to check if a variable is a dictionary in Python?

问题描述

您如何检查变量是否是python中的字典?

How would you check if a variable is a dictionary in python?

例如，我希望它遍历字典中的值，直到找到字典为止.然后，循环找到它:

For example, I'd like it to loop through the values in the dictionary until it finds a dictionary. Then, loop through the one it finds:

dict = {'abc': 'abc', 'def': {'ghi': 'ghi', 'jkl': 'jkl'}}
for k, v in dict.iteritems():
    if ###check if v is a dictionary:
        for k, v in v.iteritems():
            print(k, ' ', v)
    else:
        print(k, ' ', v)

推荐答案

您可以使用if type(ele) is dict或使用 isinstance(ele, dict) ，如果您将dict子类化，则将起作用:

You could use if type(ele) is dict or use isinstance(ele, dict) which would work if you had subclassed dict:

d = {'abc':'abc','def':{'ghi':'ghi','jkl':'jkl'}}
for ele in d.values():
    if isinstance(ele,dict):
       for k, v in ele.items():
           print(k,' ',v)

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