Python programming example for in detail loop

Mondo Technology Updated on 2024-01-19

The for loop in Python is a common control flow statement that allows you to traverse a sequence (such as a list, tuple, dictionary, etc.) or other iterable objects to perform a specific operation. In Python, there are many uses for loops, and I'll introduce a few of them and examples below.

1.Traverse the list.

You can use a for loop to iterate through a list and perform a specific action on each element. For example, the following ** will print each element in the list:

my_list = [1, 2, 3, 4, 5]

for item in my_list:

print(item) output:

2.Use the range() function.

If you need to generate a sequence of numbers, you can use the range() function in combination with a for loop. For example, the following ** will print numbers from 1 to 5:

for i in range(1, 6):

print(i) output:

3.Traverse the dictionary.

You can use a for loop to iterate through a dictionary and perform a specific action on each key-value pair. For example, the following ** will print each key-value pair in the dictionary:

my_dict =

for key, value in my_dict.items():

print(key, value)

Output: name alice

age 25

city new york

4.Traverse the collection.

Unlike lists and dictionaries, collections are unordered, so you can't traverse the elements in a collection using a for loop. However, you can use a for loop to iterate through each element in the collection and perform a specific action on each element. For example, the following ** will print each element in the collection:

my_set =

for item in my_set:

print(item)

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