python 负数变正数

# 使用abs()函数将负数转换为正数
negative_number = -10
positive_number = abs(negative_number)
print(f"The positive value of {negative_number} is {positive_number}")

The positive value of -10 is 10

# 错误的示例：尝试对字符串使用abs()函数
try:
    print(abs("hello"))
except TypeError as e:
    print(f"Error: {e}")

# 正确的做法：先将字符串转换为整数
string_number = "-10"
number = int(string_number)
positive_number = abs(number)
print(f"The positive value of {string_number} is {positive_number}")