Add Elements to Python Dictionary

There are two ways to add elements to a dictionary.

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my_dict = {'key1': 'value1', 'key2': 'value2'}

# 添加新的键值对
my_dict['key3'] = 'value3'

# 修改已有的键值对
my_dict['key2'] = 'new value2'

print(my_dict)

Output results:

{'key1': 'value1', 'key2': 'new value2', 'key3': 'value3'}

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my_dict = {'key1': 'value1', 'key2': 'value2'}

# 添加新的键值对
my_dict.update({'key3': 'value3'})

# 修改已有的键值对
my_dict.update({'key2': 'new value2'})

print(my_dict)

Output result:

{'key1': 'value1', 'key2': 'new value2', 'key3': 'value3'}

You can add new key-value pairs or modify existing ones in the dictionary using any method.