how to assign values to a dictionary in Python

In Python, you can use the assignment operator (=) to assign values to a dictionary. Dictionaries are made up of keys and values, and you can access and modify the values in the dictionary using the keys.

Here are some common ways to assign values to a dictionary:

1. Assign directly
2. my_dict contains key-value pairs, with “key1” mapping to “value1” and “key2” mapping to “value2”.
3. Assigning values using indexes (keys):
4. I created an empty dictionary named ‘my_dict’ and added two key-value pairs: ‘key1’ with a value of ‘value1’ and ‘key2’ with a value of ‘value2’.
5. Assign values using the update() method.
6. my_dict = {}
   my_dict[“key1”] = “value1”
   my_dict[“key2”] = “value2”
7. Assigning values using the dict() function:
8. I have a dictionary with keys and values: my_dict = {“key1”: “value1”, “key2”: “value2”}

You can access and modify values in a dictionary using keys, regardless of the method you use. For example:

my_dict = {"key1": "value1", "key2": "value2"}
print(my_dict["key1"])  # 输出：value1

my_dict["key2"] = "new_value2"
print(my_dict["key2"])  # 输出：new_value2

Note: Using the assignment operator (=) will create a new key-value pair in the dictionary if the key does not already exist. If the key already exists in the dictionary, the assignment operator will modify the corresponding value.