python将数字转化成字符串

可以使用str()函数将数字转换为字符串，例如：

num = 123
str_num = str(num)
print(str_num)   # 输出：'123'

还可以使用格式化字符串的方式，将数字和字符串拼接在一起，例如：

num = 123
str_num = f"The number is {num}"
print(str_num)   # 输出：'The number is 123'

注意，当使用加号（+）将数字和字符串拼接时，需要先将数字转换为字符串，否则会报错，例如：

num = 123
str_num = "The number is " + num   # 报错

正确的写法是：

num = 123
str_num = "The number is " + str(num)
print(str_num)   # 输出：'The number is 123'