print(r'''"To be, or not to be": that is the question.
Whether it's nobler in the mind to suffer.''')
Whether it's nobler in the mind to suffer.''')
2020-12-20
l = [[1, 2, 3], [5, 3, 2], [7, 3, 2]]
for ch in l:
a = ch[0]
b = ch[1]
c = ch[2]
s = 2*(a*b+a*c+b*c)
print(s)
for ch in l:
a = ch[0]
b = ch[1]
c = ch[2]
s = 2*(a*b+a*c+b*c)
print(s)
2020-12-17
L = ['Alice', 66, 'Bob', True, 'False', 100]
i = 1
for ch in L:
i = i+1
if i % 2 == 0:
continue
print(ch)
i = 1
for ch in L:
i = i+1
if i % 2 == 0:
continue
print(ch)
2020-12-16
L = [95.5, 85, 59, 66, 72]
L.sort(reverse=True)
sub_L = L[0:3]
print(sub_L)
L.sort(reverse=True)
sub_L = L[0:3]
print(sub_L)
2020-12-16
3.1415926-------浮点数
'Learn Python in imooc.'-----字符串
100-----整数
0b1101-----二进制数
'Learn Python in imooc.'-----字符串
100-----整数
0b1101-----二进制数
2020-12-15
d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
num=0
for key in d.keys():
num=num+1
print(num)
num=0
for key in d.keys():
num=num+1
print(num)
2020-12-11
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
for item in d.keys():
if item=='Alice':
print("old_score:"+str(d['Alice']))
d['Alice']=60
print(d)
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
for item in d.keys():
if item=='Alice':
print("old_score:"+str(d['Alice']))
d['Alice']=60
print(d)
2020-12-11
stu=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
stu[0]=stu[-1]
stu[-1]=stu[1]
stu[1]="Alice"
print(stu)
stu[0]=stu[-1]
stu[-1]=stu[1]
stu[1]="Alice"
print(stu)
2020-12-10
age = 1
if age >= 18:
print('adult')
elif age > 6:
print('teenager')
elif age > 3:
print('kid')
elif age > 0:
print('baby')
else:
print('error')
if age >= 18:
print('adult')
elif age > 6:
print('teenager')
elif age > 3:
print('kid')
elif age > 0:
print('baby')
else:
print('error')
2020-12-10