最新回答 / 慕尼黑352915
第四行最后需要冒號(hào)：。邏輯判斷如果小于等于100就累加，如果大于100就退出循環(huán)，else不會(huì)被執(zhí)行。
2024-03-20
s1 = set([1, 2, 3, 4, 5])
s2 = set([1, 2, 3, 4, 5, 6, 7, 8, 9])
s3 = {x for x in s2 if x in s1 }
print(s3)
s2 = set([1, 2, 3, 4, 5, 6, 7, 8, 9])
s3 = {x for x in s2 if x in s1 }
print(s3)
2024-03-18
# task
sum = 0
num = 0
while num < 1001:
if num % 2 == 0:
num += 1
sum += num
else:
num += 1
continue
print(sum)
sum = 0
num = 0
while num < 1001:
if num % 2 == 0:
num += 1
sum += num
else:
num += 1
continue
print(sum)
2024-03-15
# common deal
num = 1
sum = 0
while True:
if num > 1000:
break
num += 1
if num % 2 == 0:
sum += num
print(sum)
#250500
#########################################
# another deal
sum_2 = 0
for i in range(0,1001,2):
sum_2 += i
print(sum_2)
#250500
num = 1
sum = 0
while True:
if num > 1000:
break
num += 1
if num % 2 == 0:
sum += num
print(sum)
#250500
#########################################
# another deal
sum_2 = 0
for i in range(0,1001,2):
sum_2 += i
print(sum_2)
#250500
2024-03-15
result = 1
for i in range(1, 11):
result *= i
print(result)
for i in range(1, 11):
result *= i
print(result)
2024-03-04
# Enter a code
length = 3.14
width = 1.57
square = length * width
print(round(square, 2))
length = 3.14
width = 1.57
square = length * width
print(round(square, 2))
2024-03-03
# Enter a code
template = 'Life is {w},you need {y}'
result = template.format(w = 'short',y = 'python')
print(result)
template = 'Life is {w},you need {y}'
result = template.format(w = 'short',y = 'python')
print(result)
2024-02-27
最新回答 / 慕標(biāo)2526337
在Python中，賦值運(yùn)算符 = 和比較運(yùn)算符 < 的優(yōu)先級(jí)雖然不同，但在表達(dá)式 score=59<60 中，并不是按照優(yōu)先級(jí)解析的。這是因?yàn)橘x值運(yùn)算符 = 和比較運(yùn)算符 < 無法直接這樣組合起來成為一個(gè)合法的表達(dá)式。Python解析器會(huì)從左到右掃描表達(dá)式，當(dāng)它遇到 score= 時(shí)，它會(huì)認(rèn)為這是一個(gè)賦值操作的開始，因此會(huì)首先執(zhí)行賦值操作 score=59，將59賦給變量 score。然而，賦值操作完成后，剩下的 <60 部分由于缺少左邊的操作數(shù)，導(dǎo)致這個(gè)表達(dá)式是非法的，Pytho...
2024-02-27
最新回答 / 執(zhí)劍人程心
因?yàn)閮烧咧赶蛲粋€(gè)列表對(duì)象，如：list = [1, 2, 3]list1 = listlist1.append(4)print('list1', list1)print('list', list)list1 [1, 2, 3, 4]list [1, 2, 3, 4]要避免這種情況，使用copy，如：list2 = list.copy()print('list2', list2)list2.append(100)print('list2', list2)print('list', list)list2 [...
2024-02-26