如何在python中传递简单参数

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

greet("Alice")  # 输出: Hello, Alice!

def greet(name, age):
    print(f"Hello, {name}! You are {age} years old.")

greet(age=30, name="Bob")  # 输出: Hello, Bob! You are 30 years old.

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

greet("Charlie")       # 输出: Hello, Charlie!
greet("Charlie", "Hi") # 输出: Hi, Charlie!

def sum_all(*args):
    return sum(args)

print(sum_all(1, 2, 3))        # 输出: 6
print(sum_all(1, 2, 3, 4, 5))   # 输出: 15

def append_to(element, lst=None):
    if lst is None:
        lst = []
    lst.append(element)
    return lst

print(append_to(1))  # 输出: [1]
print(append_to(2))  # 输出: [2]，而不是 [1, 2]