a = 0
s = 0
while True:
if a > 1000:
break
s = s + a
a = a + 2
print(s)
s = 0
while True:
if a > 1000:
break
s = s + a
a = a + 2
print(s)
2021-04-06
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
d['Alice'] = 60
print(d)
# ==> {'Alice': 60, 'Bob': 60, 'Candy': 75, 'David': 86, 'Ellena': 49}
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
d['Alice'] = 60
print(d)
# ==> {'Alice': 60, 'Bob': 60, 'Candy': 75, 'David': 86, 'Ellena': 49}
2021-04-06
最赞回答 / 半勺暖阳
噢，你问 . 以下搬自知乎：在编程语言中，英文句点通常是属性访问符，在 python 中一切皆对象，句点用来访问对象的属性或者方法。1.import matplotlib.pyplot as plt # matplotlib是模块，模块也是对象，这个表示访问 matplotlib 的子模块 pyplot2. import pandas as pd3. iris = pd.read_csv('XXXXXX') # 这个表示访问 pandas 模块的 read_csv 方法4. axes.set_xlim([...
2021-04-05
num=0
sum=0
while True:
if num>1000:
break
sum=sum+num
num+=2
print(sum)
#这样也可以
sum=0
while True:
if num>1000:
break
sum=sum+num
num+=2
print(sum)
#这样也可以
2021-04-04
a = r''''\"To be,or not to be\":that is the question.\n
Whether it\'s nobler in the mind to suffer.'
'''
print(a)
Whether it\'s nobler in the mind to suffer.'
'''
print(a)
2021-04-04
最赞回答 / 万象天心
如果按你的思路的话 我想不出如果实现目的的话 你可以试试这样 看看对不对
s1 = 'ABC' s2 = '123' s3 = 'xyz' s = s1 + s2 + s3 count = 0 for a in s: for b in s: for c in s: ...
2021-04-04
最赞回答 / 万象天心
isdisjoint()方法 如果有重合，返回False，否则返回True。 s1 = set([1, 2, 3, 4, 5]) s2 = set([1, 2, 3, 4, 5, 6, 7, 8, 9]) s1.isdisjoint(s2) 为False 故执行else
2021-04-04
答案应该是：
s1 = 'ABC'
s2 = '123'
s3='xyz'
for z in s3:
for x in s1:
for y in s2:
print(x + y+ z);
print(x + z+ y);
print(y + x+ z);
print(y + z+ x);
print(z + x+ y);
print(z + y+ x);
s1 = 'ABC'
s2 = '123'
s3='xyz'
for z in s3:
for x in s1:
for y in s2:
print(x + y+ z);
print(x + z+ y);
print(y + x+ z);
print(y + z+ x);
print(z + x+ y);
print(z + y+ x);
2021-04-04
# Enter a code
L = [75, 92, 59, 68, 99]
sum = 0.0
for s in L:
sum = sum + s
ave = sum / len(L)
print(ave)
L = [75, 92, 59, 68, 99]
sum = 0.0
for s in L:
sum = sum + s
ave = sum / len(L)
print(ave)
2021-04-03
# Enter a code
names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
names.append('Zero')
names.insert(-2,'Gen')
names.insert(-2,'Phoebe')
print(names)
names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
names.append('Zero')
names.insert(-2,'Gen')
names.insert(-2,'Phoebe')
print(names)
2021-04-02
L = [95.5, 85, 59, 66, 72]
L.sort(reverse = False)
print('first: ',L[-1])
print('second: ',L[-2])
print('third: ',L[-3])
L.sort(reverse = False)
print('first: ',L[-1])
print('second: ',L[-2])
print('third: ',L[-3])
2021-04-02
# Enter a code
L = [95.5, 85, 59, 66, 72]
L.sort(reverse = True)
print('first: ',L[0])
print('second: ',L[1])
print('third: ',L[2])
L = [95.5, 85, 59, 66, 72]
L.sort(reverse = True)
print('first: ',L[0])
print('second: ',L[1])
print('third: ',L[2])
2021-04-02