In Python programming, in range is a commonly used control flow statement to iterate over a series of numbers. It is concise and efficient, and is widely used in scenarios such as cycling and condition judgment.
This article will give you an in-depth understanding of how to use in range to help you better master Python programming. Search Topic Full Time Challenge in February
Basic grammar. In Range is a conditional statement in Python that checks whether a number is within a certain range. Its basic syntax is as follows:
for i in range(start, stop, step): tab) loop body.
Thereinto. start represents the start value of the range (inclusive), stop represents the end value of the range (not included), step represents the step size (that is, the value that increases each cycle), and the default usage is 1.
For example, the following ** will traverse an integer between 0 and 4:
Common application scenarios.
Traversing a sequence of numbers: The most common use of in range is to traverse a series of numbers. For example, print an even number between 1 and 10:
With list derivation: In range can be used in conjunction with list derivation to generate a list of numbers that meet the criteria. For example, generate a list of squared numbers between 1 and 10:
Conditional: In range can also be used to check whether a number is within a certain range. For example, to determine if a number is a positive integer:
3. In the use of in range with other control processes.
In range can be used in conjunction with other control flow statements (e.g., if, while, etc.) to implement more complex logic. For example, implement a countdown program using a while loop and in range:
Running the above ** in the console will give you a countdown-like effect. As shown below:
Summary. Through the introduction of this article, I believe you have an in-depth understanding of the usage of in range.
In actual programming, the flexible use of in range can greatly improve the efficiency and readability of the system. Hopefully, this article will be helpful in your Python programming journey.