Python:如何检查变量是一种有意义的数值类型

def check_numeric_type(value):
    if type(value) in (int, float, complex):
        return True
    return False

# 示例
print(check_numeric_type(10))       # True
print(check_numeric_type(3.14))     # True
print(check_numeric_type(1 + 2j))   # True
print(check_numeric_type("string")) # False

def check_numeric_type(value):
    if isinstance(value, (int, float, complex)):
        return True
    return False

# 示例
print(check_numeric_type(10))       # True
print(check_numeric_type(3.14))     # True
print(check_numeric_type(1 + 2j))   # True
print(check_numeric_type("string")) # False

def calculate_square(value):
    if not isinstance(value, (int, float)):
        raise TypeError("Value must be a numeric type")
    return value ** 2

# 示例
try:
    print(calculate_square("string"))
except TypeError as e:
    print(e)  # 输出: Value must be a numeric type