# 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2526337
在Python中，賦值運算符 = 和比較運算符 < 的優先級雖然不同，但在表達式 score=59<60 中，并不是按照優先級解析的。這是因為賦值運算符 = 和比較運算符 < 無法直接這樣組合起來成為一個合法的表達式。Python解析器會從左到右掃描表達式，當它遇到 score= 時，它會認為這是一個賦值操作的開始，因此會首先執行賦值操作 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，導致這個表達式是非法的，Pytho...
2024-02-27
最新回答 / 執劍人程心
因為兩者指向同一個列表對象，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
def digui(n):
if n==1:
return n
else:
return n+digui(n-1)
print(digui(100))
if n==1:
return n
else:
return n+digui(n-1)
print(digui(100))
2024-02-19
def greet(str1:str, str2: str = "world") -> str:
return "{} {}".format(str1, str2)
print(greet("hello", "world"))
print(greet("hello"))
return "{} {}".format(str1, str2)
print(greet("hello", "world"))
print(greet("hello"))
2024-02-17
def greet(ch='world'):
print('Hello,'+ch+'.')
greet()
greet('imooc')
print('Hello,'+ch+'.')
greet()
greet('imooc')
2024-02-17
def sub_num(L):
odd = 0
even = 0
for num in L:
if num%2==0:
even = even + num
else:
odd = odd + num
return odd,even
result = sub_num([1,2,3,4,5])
print(result)
print('奇數項的和={},偶數項的和={}'.format(result[0],result[1]))
odd = 0
even = 0
for num in L:
if num%2==0:
even = even + num
else:
odd = odd + num
return odd,even
result = sub_num([1,2,3,4,5])
print(result)
print('奇數項的和={},偶數項的和={}'.format(result[0],result[1]))
2024-02-16
d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
num = len(d.keys())
print(num)
num = len(d.values())
print(num)
print(len(d))
num = len(d.keys())
print(num)
num = len(d.values())
print(num)
print(len(d))
2024-02-15
scores = (100,69,29,100,72,99,98,100,75,100,100,4,88,100)
print(scores.count(100))
print(scores.count(100))
2024-02-15
L = [[1,2,3],[5,3,2],[7,3,2]]
for item in L:
length=item[0]
width=item[1]
height=item[2]
area = length*width*height
print(area)
for item in L:
length=item[0]
width=item[1]
height=item[2]
area = length*width*height
print(area)
2024-02-15
L = ['Alice','Bob','Candy','David','Ellena']
candy = L.pop(2)
David = L.pop(2)
print(candy)
print(David)
print(L)
candy = L.pop(2)
David = L.pop(2)
print(candy)
print(David)
print(L)
2024-02-15