Use the `update()` method to merge dictionaries, or use the `{**dict1, **dict2}` syntax in Python 3.5+ for a concise merge.

Merging dictionaries in Python can be done in several ways, depending on the version of Python you are using. Here are a few common methods:

Using update() Method

The update() method modifies the first dictionary in place, adding key-value pairs from the second dictionary:

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}

dict1.update(dict2)
print(dict1)  # Output: {'a': 1, 'b': 3, 'c': 4}

If the keys overlap, the values from dict2 will overwrite those in dict1.

Using Dictionary Unpacking (Python 3.5+)

In Python 3.5 and later, you can use dictionary unpacking to create a new dictionary:

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
merged = {**dict1, **dict2}
print(merged)  # Output: {'a': 1, 'b': 3, 'c': 4}

This method creates a new dictionary without modifying the original ones.

Using dict() Constructor

You can also merge dictionaries using the dict() constructor and the unpacking operator:

merged = dict(dict1, **dict2)

This method is similar to the previous one and works well for merging multiple dictionaries.

By mastering these techniques, you can efficiently handle dictionary data structures in Python.