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How would you check if a variable is a dictionary in Python?
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) 
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Use get() and Key to Check if Value Exists in a Dictionary Dictionaries in Python have a built-in function key() , which returns the value of the given key. At the same time, it would return None if it doesn't exist.
To simply check if a key exists in a Python dictionary you can use the in operator to search through the dictionary keys like this: pets = {'cats': 1, 'dogs': 2, 'fish': 3} if 'dogs' in pets: print('Dogs found!') # Dogs found! A dictionary can be a convenient data structure for counting the occurrence of items.
Use any() & List comprehension to check if a value exists in a list of dictionaries.
To check the data type of variable in Python, use the type() method. The type() is a built-in Python method that returns the class type of the argument(object) passed as a parameter. You place the variable inside a type() function, and Python returns the data type.
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 element in d.values(): if isinstance(element, dict): for k, v in element.items(): print(k,' ',v) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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