# 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 / 慕标2526337
在Python中，赋值运算符 = 和比较运算符 < 的优先级虽然不同，但在表达式 score=59<60 中，并不是按照优先级解析的。这是因为赋值运算符 = 和比较运算符 < 无法直接这样组合起来成为一个合法的表达式。Python解析器会从左到右扫描表达式，当它遇到 score= 时，它会认为这是一个赋值操作的开始，因此会首先执行赋值操作 score=59，将59赋给变量 score。然而，赋值操作完成后，剩下的 <60 部分由于缺少左边的操作数，导致这个表达式是非法的，Pytho...
2024-02-27
最新回答 / 执剑人程心
因为两者指向同一个列表对象，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]要避免这种情况，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('奇数项的和={},偶数项的和={}'.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('奇数项的和={},偶数项的和={}'.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