[읽을 거리]Dictionary Methods Cheat Sheet

Dictionary Methods Cheat Sheet

Definition

x = {key1:value1, key2:value2}

Operations

• len(dictionary) - Returns the number of items in the dictionary
• for key in dictionary - Iterates over each key in the dictionary
• for key, value in dictionary.items() - Iterates over each key,value pair in the dictionary
• if key in dictionary - Checks whether the key is in the dictionary
• dictionary[key] - Accesses the item with key key of the dictionary
• dictionary[key] = value - Sets the value associated with key
• del dictionary[key] - Removes the item with key key from the dictionary

Methods

• dict.get(key, default) - Returns the element corresponding to key, or default if it's not present
• dict.keys() - Returns a sequence containing the keys in the dictionary
• dict.values() - Returns a sequence containing the values in the dictionary
• dict.update(other_dictionary) - Updates the dictionary with the items coming from the other dictionary. Existing entries will be replaced; new entries will be added.
• dict.clear() - Removes all the items of the dictionary

Check out the official documentation for dictionary operations and methods.

 

https://docs.python.org/3/library/stdtypes.html#mapping-types-dict

Built-in Types — Python 3.8.1 documentation

 

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