我正在尝试将用户提供的数字中的每个数字平方。我得到正确的输出,但是最后我得到一个额外的索引,我不确定为什么。我已经在代码中添加了注释,以解释我在每个步骤中想要做的事情。最后如何摆脱该索引?
def square_digits(num):
print(num)
string_num =(str(num)) #convert the num to a string
for word in string_num: #iterate through every digit
word = int(word) #convert each digit to an int so we can square it
square_num = word * word
str_sq_num = list(str(square_num)) #create a list of those nums
for count in str_sq_num: #iterate through list to make it one number
print(count, end = "")
print(str_sq_num)
return str_sq_num
因此,给出了一个示例编号3212
。我应该输出9414
,而不是9414['4']
。另一个示例是数字6791
,输出应为3649811
,但我的输出为3649811['1']
。
答案 0 :(得分:1)
问题是循环在python中工作的方式。变量str_square_num
是for word in string_num
上一次迭代的结果。
例如,假设您的数字为12,则在第一次迭代中str_square_num
将为[1]
或1
的平方。但是,当此值设置为[4]
或2平方时,它将在第二次迭代中覆盖。因此,数组将始终只包含最后一位的平方。
如果您的目标是获取所有指标的数组,请尝试以下操作:
def square_digits(num):
print(num)
string_num =(str(num)) #convert the num to a string
str_sq_num = []
for word in string_num: #iterate through every digit
word = int(word) #convert each digit to an int so we can square it
square_num = word * word
str_sq_num.extend(str(square_num)) #create a list of those nums
for count in str_sq_num: #iterate through list to make it one number
print(count, end = "")
print(str_sq_num)
return str_sq_num
答案 1 :(得分:0)
我不确定您要在此实现什么,但是查看您的示例,我想这应该可行:
def square_digits(num):
print(num)
string_num = (str(num))
str_sq_num = []
for word in string_num:
word = int(word)
square_num = word * word
str_sq_num.append(square_num)
for count in str_sq_num:
print(count, end = "")
return str_sq_num
答案 2 :(得分:0)
无法测试,但这应该可以做到:
def square_digits(string_num):
return "".join([str(int(num)**2) for num in string_num])