python求解，3Q

Question

本人刚刚开始python
a = input("请输入一个数字：")
print('用户输入的数字为：' a)
为什么会报错啊，报错显示：C:\Users\Think\AppData\Local\Microsoft\WindowsApps\python3.10.exe C:\Users\Think\PycharmProjects\pythonProject\demo.py
File "C:\Users\Think\PycharmProjects\pythonProject\demo.py", line 2
print('用户输入的数字为：' a)

SyntaxError: invalid syntax. Perhaps you forgot a comma?
求解

Answer 1

变量a前面加逗号隔开，或者这样

a = input("请输入一个数字：")
print('用户输入的数字为：{}'.format(a))