You can merge two dictionaries in Python using various methods. Here are five examples:

1. Using the update() method:

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

dict1.update(dict2)
print(dict1)

Output:

{'a': 1, 'b': 3, 'c': 4}

2. Using dictionary unpacking (**):

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

merged_dict = {**dict1, **dict2}
print(merged_dict)

Output:

{'a': 1, 'b': 3, 'c': 4}

3. Using dict() constructor and the ** unpacking:

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

merged_dict = dict(dict1, **dict2)
print(merged_dict)

Output:

{'a': 1, 'b': 3, 'c': 4}

4. Using dictionary comprehension:

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

merged_dict = {k: dict2[k] if k in dict2 else v for k, v in dict1.items()}
merged_dict.update(dict2)
print(merged_dict)

Output:

{'a': 1, 'b': 3, 'c': 4}

5. Using the collections.ChainMap:

from collections import ChainMap

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

merged_dict = dict(ChainMap(dict2, dict1))
print(merged_dict)

Output:

{'a': 1, 'b': 3, 'c': 4}

Each of these methods will merge the dictionaries dict1 and dict2 into a single dictionary.