Python编程快速上手的15个场景的示例代码

print("Hello, World!")

name = "Alice"
age = 30
print(f"My name is {name} and I'm {age} years old.")

fruits = ["apple", "banana", "cherry"]
for fruit in fruits:
    print(f"I like {fruit}s")

temperature = 25
if temperature > 30:
    print("It's hot outside.")
elif temperature > 20:
    print("It's warm outside.")
else:
    print("It's cool outside.")

def greet(name):
    print(f"Hello, {name}!")

greet("Bob")

person = {"name": "Alice", "age": 30}
print(person["name"])

numbers = [1, 2, 3, 4, 5]
squared_numbers = [n ** 2 for n in numbers]
print(squared_numbers)

with open("example.txt", "w") as file:
    file.write("Hello, File!")

with open("example.txt", "r") as file:
    content = file.read()
    print(content)

class Dog:
    def __init__(self, name):
        self.name = name

    def bark(self):
        print(f"{self.name} says Woof!")

my_dog = Dog("Buddy")
my_dog.bark()

try:
    result = 10 / 0
except ZeroDivisionError:
    print("Division by zero is not allowed.")

import math

print(math.sqrt(25))

from datetime import datetime

now = datetime.now()
print(now)

numbers = [4, 2, 9, 1, 5]
numbers.sort()
print(numbers)

import re

text = "The price of the book is $20."
match = re.search(r'\$\d+', text)
if match:
    print("Found a price:", match.group())

import requests

response = requests.get("https://www.example.com")
print(response.text)