Introduction to Python functions: usage and examples of ord function

Introduction to Python functions: usage and examples of ord function

As a high-level programming language, Python provides many built-in functions, one of which is the ord function. The ord function is often used to obtain the ASCII code value of a character. In this article, we will learn the usage of ord function and give practical code examples.

The usage of the ord function is very simple. It accepts a character as a parameter and returns the ASCII code value corresponding to this character. ASCII (American Standard Code for Information Interchange) is a commonly used character encoding system used to represent text and other characters in computer systems.

First, let us look at a simple example to demonstrate how to use the ord function to obtain the ASCII code value of a character:

ch = 'A'
print(ord(ch))

The above code will print out that the ASCII code value of the character 'A' is 65 . This is because 'A' is at position 65 in the ASCII code table.

Of course, we can also use the ord function to obtain the ASCII code value of other characters. Here is a more comprehensive example that demonstrates how to use the ord function to obtain the ASCII code values ​​​​of all characters in a string:

string = "Hello, World!"
for ch in string:
    print(ord(ch))

The above code will output the ASCII code values ​​​​of all characters in a string, one per line. If you run this example, you will see output similar to the following:

72
101
108
108
111
44
32
87
111
114
108
100
33

Through the above example, we can see the usage and effect of the ord function.

In addition to getting the ASCII code value of a character, we can use the ord function to perform other operations. The following is an example that demonstrates how to calculate the sum of the ASCII code values ​​of a string of characters:

string = "Hello, World!"
sum = 0
for ch in string:
    sum += ord(ch)
print("Total sum of ASCII values:", sum)

The above code will add the ASCII code values ​​of all characters in the string and output the result. If you run the example, you will get output similar to the following:

Total sum of ASCII values: 1030

Through the above example, we have demonstrated the usage and flexibility of the ord function.

To summarize, the ord function is a very useful built-in function in Python, which can be used to obtain the ASCII code value of a character. We can easily use it in calculations, loops, and other operations. Through the code examples in this article, we hope you will have a deeper understanding of the usage and common applications of the ord function.

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