获取:'TypeError:只能将元组(不是"int")连接到元组',即使它是一个int

Question

num_1 = 3
num_2 = 5
num_3 = 15
div_1 = 1000/3
div_2 = 1000/5
div_3 = 1000/15
sum_1 = 0
sum_2 = 0
sum_3 = 0
i = 0
while (i<300):
    sum_1 = sum_1 + i*3,
    i = i + 1
    print (sum_1)
i = 0
while (i<div_2):
    sum_2 = sum_2 + i*5,
    i += 1
i = 0
while (i<div_1):
    sum_3 = sum_3 + i*5,
    i += 1
print (sum_1)

输出:

(0,)
Traceback (most recent call last):
  File "C:/Users/xxxxx/Documents/Python/1-p.py", line 12, in <module
    sum_1 = sum_1 + i*3,
TypeError: can only concatenate tuple (not "int") to tuple

我是Python的初学者,我正在尝试编写一个简单的代码.

我不确定出了什么问题.任何人都可以帮助我.对此,我真的非常感激.

Answer 1

你在不应该使用逗号的地方,偶然创建元组:

sum_1 = sum_1 + i*3,  # < no comma needed there

摆脱这些逗号,你的代码将工作.

逗号在Python中创建一个元组:

>>> 2,
(2,)