Python program to combine two dictionary adding values for common key

here's a step-by-step tutorial on how to achieve this:

1. import the `defaultdict` class from the `collections` module.
2. create two dictionaries with some common keys.
3. use a loop to iterate through the keys in both dictionaries and add their values together.
4. create a new dictionary to store the combined values.

here's the python code example:

you can modify this code example to work with dictionaries containing values of different data types or to perform different operations when combining the values for common keys.

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#python adding extra backslashes
#python adding tuples
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#python adding to dictionary in loop

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