Learn about introductory code examples for Python programming

Entry-level code examples for understanding Python programming

Python is an easy-to-learn, yet powerful programming language. For beginners, it is very important to understand the introductory code examples of Python programming. This article will provide you with some concrete code examples to help you get started quickly.

1. Print Hello World

print("Hello World")

This is the simplest code example in Python. The print() function is used to output the specified content to the console.

2. Calculate the sum of two numbers

a = 5
b = 10
c = a + b
print("两个数字的和为：", c)

In this example, we define two variables a and b, and add them and assign them to the variable c. Then use the print() function to output the results to the console.

3. Judge digital parity

num = int(input("请输入一个整数："))
if num % 2 == 0:
    print("这个数字是偶数")
else:
    print("这个数字是奇数")

In this example, we use the input() function to get the integer entered by the user and store it in the variable num. Then use the if statement to determine whether num is an even number. If so, output "This number is even." Otherwise, output "This number is odd."

4. Use a loop to print numbers

for i in range(1, 11):
    print(i)

In this example, we use a for loop to iterate through the numbers in a range and output each number using the print() function to the console.

5. List operations

fruits = ["apple", "banana", "cherry"]
print("水果列表：", fruits)

fruits.append("orange")
print("添加一个水果后的列表：", fruits)

fruits.remove("banana")
print("删除一个水果后的列表：", fruits)

if "apple" in fruits:
    print("列表中包含苹果")
else:
    print("列表中不包含苹果")

This example shows common operations on lists. We first create a list of fruits, then use the append() function to add an element to the list, and use the remove() function to remove an element from the list. Then use an if statement to determine whether the list contains the specified element.

Hope the above code examples can help you get started with Python programming. Through actual code examples, you can better understand the basic syntax and common operations of the Python language, laying a solid foundation for further learning and developing Python projects.

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