1、新建一个空白的PYTHON文档。
2、number_1 = input("Please enter the first number: ")number_2 = input("Please enter the second number: ")the_result = number_1 + number_2print(the_result)定义两个变量，让他们相加。但是这是字符串，所以得不到真正的结果。
3、number_1 = input("Please enter the first number: ")number_2 = input("Please enter the second number: ")the_result = int(number_1) + int(number_2)print(the_result)如果加入INT就可以得到正确的结果。
4、number_1 = input("Please enter the first number: ")number_2 = input("Please enter the second number: ")the_result = int(number_1 + number_2)print(the_result)但是不能只用一个INT来框选所有的变量。
5、number_1 = int(input("Please enter the first number: "))number_2 = int(input("Please enter the second number: "))the_result = number_1 + number_2print(the_result)也可以在前面一步就把INT加上。
6、number_1 = input("Please enter the first number: ")number_2 = input("Please enter the second number: ")the_result = float(number_1) + float(number_2)print(the_result)如果有小数点，就要加FLOAT。
7、number_1 = input("Please enter the first number: ")number_2 = input("Please enter the second number: ")the_result = int(number_1) + int(number_2)print(the_result)INT不能输入有小数点的。
