Python Zip - работа с архивами в Python

Python zip

zip is a built-in function in Python that is used to combine elements from multiple sequences into one. It creates an iterator that iterates through the elements from all sequences in parallel. The result of zip is tuples containing elements with the same indexes.

Example usage of zip in Python:

lst1 = [1, 2, 3]
lst2 = ['a', 'b', 'c']
lst3 = [True, False, True]

result = zip(lst1, lst2, lst3)

for item in result:
    print(item)

Result:

(1, 'a', True)
(2, 'b', False)
(3, 'c', True)

In this example, we create three lists: lst1, lst2, and lst3. Then we use the zip function to combine elements from these lists. When we iterate through the result object, each iteration returns a tuple containing elements with the same indexes. That's why in the first iteration we get (1, 'a', True), in the second - (2, 'b', False), and so on.

zip can also be used to combine sequences of different lengths. In this case, the iterator stops when the end of the shortest sequence is reached.

Another example of using zip to work with dictionary items:

dict1 = {'a': 1, 'b': 2, 'c': 3}
dict2 = {'x': 10, 'y': 20, 'z': 30}

result = zip(dict1.keys(), dict1.values(), dict2.values())

for item in result:
    print(item)

Result:

('a', 1, 10)
('b', 2, 20)
('c', 3, 30)

Here we create two dictionaries: dict1 and dict2. When using zip with the keys and values methods, we combine the items from these dictionaries. Thus, each iteration returns a tuple containing a key from dict1, a value from dict1, and a value from dict2.

As seen from the examples, zip provides a convenient way to combine elements from multiple sequences. It can be used in various situations, including creating new lists based on existing data, loading data from files, and working with dictionary items. Knowledge of zip can significantly save time and make your code more concise and readable.