最新回答 / 慕粉1858098231
因为是要列表元素平方和，所以必须要用一个‘容器’存储每个元素平方和的累加值，所以需要‘sum’;其次关于为什么sum=0，python是解释型语言，变量不需要声明，但需要进行初始化。如果不进行初始化（即给sum赋值），系统只是为sum分配了一个内存空间，sum就如同一个只有躯壳，没有灵魂的‘行尸走肉’，就没有办法和其他数据进行运算，即sum=sum+x*x,就会出现报错。个人拙见，希望对你有用
2023-10-17
L = ['Alice','Chinese',92,'Math',75,'English',99]
print(L)
print(L)
2023-10-16
template='{} is short,you need {}'
result=template.format('Life','Python')
print(result)
result=template.format('Life','Python')
print(result)
2023-10-16
a1 = 'ABC'
b2 = '123'
c3 = 'xyz'
for a in a1:
for b in b2:
for c in c3:
print( a + b + c)
b2 = '123'
c3 = 'xyz'
for a in a1:
for b in b2:
for c in c3:
print( a + b + c)
2023-10-15
num = 0
sum = 0
while True:
if sum >1000:
break
if num%2 == 0 :
sum = sum + num
num = sum + 1
print(num)
num = 0
sum = 0
while num <=1000:
num = num +1
if num%2 == 1:
continue
sum= sum+num
print(sum)
sum = 0
while True:
if sum >1000:
break
if num%2 == 0 :
sum = sum + num
num = sum + 1
print(num)
num = 0
sum = 0
while num <=1000:
num = num +1
if num%2 == 1:
continue
sum= sum+num
print(sum)
2023-10-15
最新回答 / 慕九州9574257
缩进的问题，加上n+1要改为n+=1正确如下：num_list = []n = 1while n <= 100: p = n * n num_list.append(p) n += 1s = sum(num_list)print(s)
2023-10-12
age = 20
if age > 18:
print('成年人')
elif age >=6:
print('青少年')
elif age >=3:
print('小孩子')
else:
print('婴儿')
if age > 18:
print('成年人')
elif age >=6:
print('青少年')
elif age >=3:
print('小孩子')
else:
print('婴儿')
2023-10-11
# Enter a code
age = 20
if age < 18 :
print('adult')
else :
print('teenager')
age = 20
if age < 18 :
print('adult')
else :
print('teenager')
2023-10-11
template = 'Life is short, {}'
a = 'you need Python'
result = template.format(a)
print(result)
template = 'Life is short, {a}'
b = 'you need Python'
result1 = template.format(a = b)
print(result1)
a = 'you need Python'
result = template.format(a)
print(result)
template = 'Life is short, {a}'
b = 'you need Python'
result1 = template.format(a = b)
print(result1)
2023-10-09
def my_func(x):
if isinstance(x, list):
return sum(x)
elif isinstance(x, tuple):
num = 1
for item in x:
num = item*num
return num
x = (12, 34, 56, 43, 65)
print(my_func(x))
if isinstance(x, list):
return sum(x)
elif isinstance(x, tuple):
num = 1
for item in x:
num = item*num
return num
x = (12, 34, 56, 43, 65)
print(my_func(x))
2023-10-03